reodnnaissmce gedchmicfll survey of heavy kenewls …

; -t /. . (./u' ,< h Y •*•*•:-«•»«Mn*K ££ * !« • * PAEC (A) IB 83007

ocrl3m REODNNAISSMCE GEDCHMICflL SURVEY OF HEAVY KENEWLS

IN NORTHERN LUZON, 4HLIPPINES V*1

by

Gebriel Santos J r . Jul iet ta E. Seguis Lourdes 6. Fernandez

Philippine Atomic Energy Ccnmission

and

Federioo E. Miranda Donno G. Custndio Nonita P. Alfaro

bureau of Mines and Geosciences Regional Office No. I

July 1S83

Philippine Atonic energy Oonrission Don Mofdano Marcos Avenue

Dilquan, Quezon City

PAEC (A) IB 83007

!?* W M * 4TOMK. M M f f M M M ;

RECONNAISSANCE GEDCHEKIC0L SURVEY OF HEAVY MINERALS

IN NORIHEFN LUZON, MIIPPINES

0CTJ3 8 * by

Gafcriel Santos Jr. Julietta E. Seguis Lourdes G. Fernandez

Philippine Atondc Energy Comnission

and

Federioo E. Miranda Donno G. Custodio Nonita P. Alfaro

Bureau of Mines and Geosciences Regional Office No. I

July 1983

Philippine Atomic Energy Comissior. Don Mariano Marcos Avenue

Dil.ijnan, Quezon City

RECONNAISSANCE GEOCHEMICAL SURVEY OF HEAVY MINERALS IN NORTHERN LUZON, PHILIPPINES

by OENriFIC 1.18***1 »»' 'wcnaiftimcrBAii CPN**^*

Gabriel Santos Jr. Julietta E. Seguis IQjJl) Lourdes G. Fernandez ""'

Philippine Atomic Energy Commission

and Pederico E. Miranda Donno G. Custodio Ncnita P. Alfaro


July 1983

Philippine Atomic Energy Commission Don Mariano Marcos Avenue Diliman, Quezon City

PAEC (A) IB 83007

TABLE OF CONTENTS

Page

Abstract 1 Introduction . • 2 Location and Drainage 3 Geology 4 Field and Laboratory Techniques. . . . . . . . . 8 Results and Discussion 9 Recommendations 11 Acknowledgement • '. 12 References 13

PAEC (A) IB 83007

LIST OF TABLES AND FIGURES

Table 1. Results of uranium and trace element analyses of panned heavy minerals from northern Luzon.(Values in ppm)

Table 2. Average background and threshold values of uranium and selected elements in heavy minerals in northern Luzon.

Table 3. Correlation coefficient betweea uranium and the trace elements.

Figure 1. Generalized physiographic m<tp of northern Luzon (after Melendres, 1977, modified)

Figure 2. Geology of northwestern Luzon showing sample locations.

Figure 3. Geology of northeastern Luzon showing sample locations.

Figure 4. Location map of heavy mineral samples in northwestern Luzon.

Figure 5. Location map of heavy mineral samples in northeastern Luzon.

Figure 6, Uranium distribution map northwestern Luzon. Figure 7. Uranium distribution map oortheastern Luzon,

PAEC (A) IB 83007 Page 1

RECONNAISSANCE GEOCHEMICAL SURVEY OP HEAVY MINERALS IN NORTHERN LUZON, PHILIPPINES

by Gabriel Santos Jr. .Tulietta E. Seguis Lourdes G. Fernandez

Philippine Atomic Energy Commission

and Pederico E. Miranda Donno G. Custodio Nonita P. Alfaro


ABSTRACT

A reconnaissance sampling was undertaken in northern Luzon to study the distribution of uranium as well as copper, lead, zinc, manganese, silver, cobalt and nickel in heavy minerals. The average background and threshold values of the elements were determined. Uranium content in the heavy mineral was low, in the order of 0.5-0.6 ppm U. Three uranium anomaly zones were delineated in Maianas River-Licuan area, Abra, Itogon, Benguet and Bambang, Nueva Viscaya, all within the Central Cordillera. The anomalous z^nes appeared to be related to copper-gold mineral areas.

Geochemical correlations between uranium and the other elements were 'generally poor.


INTRODUCTION

In 1978, a stream sediment orientation survey for uranium was conducted in northwestern Luzon as a joint effort by PAEC and PNOC-EDC. The area was bounded on the south by North Latitude 16°45' west and on the East by East Longitude lZO^a'JO" and elsewhere by the Luzon Sea(Santos, et al., 1980). The method of Smith and Lynch (1969) was used to determine the extractable or mobile uranium. The results of the stream sediment as well as the panned heavy mineral concentrates could be used to identify areas with significant uranium distribution.

The main purpose of this paper is to describe the combined uranium geochemical results of a reconnaissance panned heavy mineral concentrate sampling in northern Luzon that was collected by the Regional Office of the Bureau of Mines and Geo-Sciences based in Baguio including the samples which were obtained in the earlier 1973 survey.


LOCATION

The survey area as shown in Pig. 1 covered mainly the northwestern part of Luzon located north of latitude 16°00 North including certain points in eastern Luzon within the Cagayan Valley Basin.

Accessibility to the survey area was easy owing to the presence of well-maintained highways and numerous bavrio roads.

DRAINAGE

The western part of northern Luzon is drained by five major river system and their numerous tributaries. These drainage systems include Laoag/Vintar Rivers In Ilocos Norte; Abra River in Abra; Ambalanga River in La Union, Bued and Agno in Benguet. They all discharge their loads westward into the Luzon Sea (South China Sea).

The eastern part of the survey area on the other hand is drained mainly by the Cagayan River and its tributaries- including the Chico River. Cagayan River drains the entire Cagayan Valley and discharges its load northward in Babuyan Channel.


GEOLOGY

The geology of Northern Lu2on is characterized by four major north-south trending tectonic units. These are from west to east: The Ilocos basin (Coastal Folded Belt), Cordillera Central, Cagayan basin (Cagayan Valley) and Sierra Madre. Both the Cordillera and Sierra Madre Central are uplift zones while the basins are major sedimentary »reas. (Durkee and Federson, 1961). Shown in Fig. 1 is the generalized map of northern Luzon after Melendres, 1977.

The survey area included most of the Ilocos Basin, Cordillera Central and parts of the Caqayan Basin. The Sierra Madre Central was not covered.

The Ilocos basin forms part of the northern portion of "Luzon Central Valley Basin" (Bu. of Mines, 1975). It is a north-northeast trending trough which opens into Lingayen Gulf in the north and extends south into Manila Bay. The Ilocos basin is bounded in the south by the Philippine Pault, a zone of left-lateral slip faults. The total thickness of the sediments exceeds 19,000 ft. The oldest sedimentary rock in the sequence is the Benguet Limestone and Labayog Limestone middle Miocene age which unconformably overlies older metavolcanics and intrusives. Un-conformably overlying are the Bued Canyon, Amlang and Aringay Formations. These rocks consist of conglomerates, graywacke, shale and tuffaceous sandstone including the Mirador Limestone (Bureau of Minos, 1975),

PAEC (A) IB 830O7 Paqe 5

The basin is highly folded and faulted in the north-south direction.

The region is characterized by north-south trending anticlines and major faults including northeast-southwest secondary fault system. Located in the Vigan-Bangued area is a topographic high which is composed of thicK meta-sediments and bedded volca-nics with associated intrusives. At the northernmost part of the basin in the Suyo area, llocos Norte,outcrops of Pre-Jurassic crystalline schists, quartzites and Cretaceous ultramafic rocks are present. These rocks may possibly represent remnants of a continental landmass. (de Boer et. al., 1980). A northwest-southeast trending major fault separates these older rocks from the younger marine and terrestrial sediments.

The geology of Central Cordillera specially its highly mineralized portion (Baguio Mineral District) has been described by many investigators including Fernandez and Pulanco (1964), Balce, 1978, Rp-Japan Project (1979) among others. The Central Cordillera is composed of bedded volcanic rocks of Eocene to Early Miocene age and thick post-middle Miocene quartz diorite rocks. The major structural lines have north-south direction and in some places the loci of qold and copper mineralizations ard related to the fault zones (Durkee and Pederson (1961); Fernandez and pulanco (1964); P.P-Japan Project Report (1979)).

According to Fernandez and Pulanco (1964), the core of the Cordillera is composed of batholithic masses of diorite which were emplaced along pre-existing structural zone in late middle Miocene time.


Numerous commercial copper-gold deposits are distributed in the Baguio district. Balce (1978), suggests that the district is in a calc-alkali province and the porphyry copper deposits in the region were formed in middle Miocene together with stocks of quartz diorite porphyry.

Shown in Fig. 2 is the geologic map of northwestern Luzon with the locations of porphyry copper type deposits (Philex, Sto. Nino, Black fit. (near Benguet Explo.), Sto. Nino, Soneng, and Batong Buhay, ar.d &it. Mine); vein type deposits (Acupan, Itogon), Antamok, Baguio Gold, Suyoc, Lepanto, Abra and Bully Busno); and contact metasomatic type (Benguet Exploration and Lammin).

The Cagayan basin is a subsided zone which is partly bounded by the Cordillera and Sierra Madre uplifted sones. Thick K'eogene sedimentary rocks were formed over Eocene to Oligocene volcanic ro-rks. The dimensions of the basin is about 240 kms. long and 85 kms. wide. The basin roughly coincides with the area drained by the Cagayan River and its tributaries.

Several anticlinal features occur along the flanks and central basin areas. Marine clastic and carbonate section varying in thickness from 15,000 to 40,000 ft, occupies the main part of the basin. The age of the sediments range from Oligocene to Recent. The basement rock is composed of pre-Tertiary metarrorphic rocks and plutons.

The sedimentary Miocene sequence is represented bv the Duma-tata, Ibulao, Lubuagan and partly by the Cabayan Formations. These rocks consist mainly of sandstone with conglomerate, shale, limestone an'l tuffs with associated basic lava flows. The Ilagan


Formation of Pliocene to Pleistocene is the most widely distributed rock within the region. It consists of a lower marine shale and sandstone section. Marine sandstone and continental silt-stone conglomerate unit occupy the upier section. The Ilagan Formation conformably overlies the Cabagan on both sides of the basin. The Awiden "esa Formation of Late Pliocene to Recent age which is composed of non-marine sands, silts, gravel and pyro-clastic deposits overlies tbe Cabagan, (Bureau of Mines, 1975),

According to Durkee and ^ederson, (1961), the Sierra Madre Range is older and relatively passive tectonically than the Cordillera Central, Shown in Fig, 3 is the geology of northeastern Luzon adopted from the geology map of the Bureau of Mines (1963) and RP-Japan Project Report (1977) showing spatial relationship of the ultramafic rocks and basement complex. The basement complex consists of undifferentiated amphibolite, schists and slates; Boer, et al, (1980) suggest that the Sierra Madre represents the remains of an east facing arc composed of large dio-ritic complexes intruded in a sequence of mafic volcanic units of Late Cretaceous-Paleocene in age. The granitic rocks were emplaced during Late Eocene to Oligocene along anticlinal axes. (RP-Japan Project Report, 1977), in contrast to the Cordillera Central, except for minor manganese occurrence, no principal ore deposits have been found in Sierra Madre uplift zone. These contrasts are probably due to difference in environment and field of intrusion as well as time of intrusion of the plutonic rocks.


FIELD AND LABORATORY TECHNIQUES

During the- orientation phase in northwestern Luzon, sampling was done along easily accessible tributaries. The sampling density was about one sample per 25 sq.km. Samples collected during the orientation survey were indicated as open circles in Fig. 4. Additional sampling was conducted by the Bureau of Mines and reo-Sciences technical men in northwestern Luzon and in the areas southeast of Central Cordillera and parts of Caaayan Basin, Shown in Fig. 5 is the location map of heavy minerals in northeastern Luzon.

At each sampling site, heavy mineral concentrates were obtained by panning the sediments using a wooden pan. The heavy minerals were further treated by removing the siliceous gangue employing heavy media separation. Bromoform with a specific gravity of 2,85 was utilized as the heavy liquid. The magnetic minerals were separated from the bon-magnetic fraction by using a hand magnet.

Uranium was analyzed with the application of delayed neutron activation analysis (DHAA), Total uranium was determined using the PAEC Automated Uranium Analyzer System which is similar to the system described by Boulanger et,al. (1976), The limit of detection of DNAA was 0,2 ppm U for a one gram sample.

Trace element analyses of copper, lead, zinc, manganese, silver, cobalt and nickel were determined using the method developed by Smith and Lynch (1969) employing a Varian Techtron Spectrophotometer, The limit of detection for copper, lead, cobalt and nickel was 4 ppm while that for zinc and manganese, was 2 ppu>. The limit of sensitivity for silver was 0,4 ppm.


RESULTS AMD DISCUSSION

A total of 413 panned heavy mineral concentrates were collected over an area covering 15,000 sg.km. or roughly at a sampling density of one sample per 35 sq.km. The results of uranium and trace element analyses of the panned heavy minerals are listed in Table 1 and were treated statistically to determine the background and threshold values using the method of Lepeltier (1969). Values which are equal to or greater than the threshold are considered geochemical anomalies.

On the basis of geology, the rock units were grouped under sedimentary and volcanic rocks; and intrusive. The average geochemical background and threshold values of uranium were 0.5 ppm and 2.8 ppm, respectively. Table 2 shows the average background and threshold values of copper, lecid, zinc, manganese, silver, cobalt and nickel, including uranium in the different rock units. Shown in Fig. 6 and 7 are the uranium distribution maps in northwestern -3nd northeastern Luzon respectively.

Uranium content in the heavy mineral was generally low. llearly 92% of all the samples collected (113) had less than 2 ppm U. Three uranium anomaly zones were outlined in Malanas River -Licuan area, Abra, Itogon, Benguet and Bambang, Nueva Viscaya, all within the Central Cordillera. The Abra and Benguet uranium anomalous areas were earlier delineated using stream sediments (-80 mesh size) and employing the method of Smith and Lynch(1969) for the geochemicjl analysis of mobile or extract^ble uranium by fluorimetry (Hernandez et.al., 1979; Santos, et.al., 1980),

PAEC (A) IB 830©'* Page to

Subsequent follow-up surveys in these areas were conducted by Hernandez et.aU, 1581 * 1982• Their results suggested that w tain localities in Abra and Benguet had slightly higher uranium values than the average background for the region*

The third geochewical anomaly was indicated by adjacent sampling points 32#9-lt 326*-32 and 3269*31 in Bantbang, nueva Viscaya. Two samples (3269*1 and 3269-8) near the anomaly §*ve significant concentration values for Cu, Pb and Mo but below threshold for uranium. Sample 3269*8 was also high in Zn while sample 3269*32 was high in Cu* It would appear that this general area in Bambang is enriched in the above metallic elements of interest. This observation is in agreement with the findings Of the RP-Japan project (1977).

It is interesting to note that the anomalies in Abra and

Benguet occur at or near areas that are mineraUzed in gold(Abra-mine) or copper-gold (Benguet Bxplo., Acupan and Itogon mines). These deposits are associated with cretaceous Paleogene (Kpg) volcanic rocks, which are composed of splilitic and basic flows intercalated with graywackesr and quartz diorite. See Pig. 2.

The Bambang anomaly, on the other hand,occurs within a sequence of Kpg sedimentary and metamorphic rocks which consist of graywacke and metamorphic shale interbedded with volcanic flows and pyroclastics. This geologic setting is considered an area of interest which warrants at least a brief follow-up geologic investigation.

$$SwS^.?!HWB«»»W<^^ ^WftinifiT 1**!* t-wi SS' <W -V

PAEC (A> IB ©300? Page ll

RECOMMENDATIONS

In view of the favorable geologic setting indicated fef the presence of granitic to quart* diorite intrusive* near the Bembang anomaly, it is recommended that a follow-up semi-detailed survey be conducted in the Bambang area.

It is further highly recommended that a closer <1 sample/ 10 sr. *ro-) sample collection survey be initiated in north* eastern Luson to delineate areas which are enriched in uranium.

mm tw is e*oo?

, ACMICIWLEOOeilEKT •

f it* authors wiah t® .fKtftnow l e d g e the. encouragement q i ven

by PAEC Cowwisaioner Z o i l o K. Bartolome and Bureau o f Mines • ••

and Geo-Scienees Diractor Juanito C. Fernandez as well as

Hr. fttft'JettlA Obra, Dir**t»* # ftKG Region 1 Office, Baoiuc Ci ty ,

in the publ icat ion of th i* paper*

the uranium analyse* were aone with the a s s i s t a n c e of

Marilyn C a s t i l l o while the AAS ana lyses were performed wit.n

the help of Gloria Corpus* and H i l t r u d e s O r t i l e , a l l of PAEC.

PAEC (A) IB 83007 Page id

REFERENCES

11 v M". | | & l r ;

%' lUlL* * 4%X.

H, 3S" HT

w •&',.*• V

hi-

ll Bfclee,G*, 1978, Geology and ore genesis of the porphyry copper deposits in Baguio district, Ltwo* island, Philippines. l h.O. Thesis. Tokoleu University* Sendai,

japan* , 2. B©er,J.E., et.aL, 19&>, The Bataan orogenet Eastward sub-

auction, tectonic rotations, and volcaniem in the ves* tern Pacific (Philippines)* Tecton<»physics, 67, pp. 251-282.

3. Bureau of Kines,l975, A review of oil exploration and stratigraphy of sedimentary basins of the Philippines, Volume II. Manila*

4. Femandez,J.C, and Pulanco,D., 1964, Preliminary report on the reconnaissance geology of northwestern Luzon, Philippines, Bureau of Mines.

5. Fernandez,H. and DamasccF., 1980. Gold deposition in the Baguio gold district and its relationship to regional geology. Jour. Geol. Soc. Philippines, v. 34, no. 3, pp. 1-27.

C-. H2rn*rvdez,E.C, et-al., 1979, Orientation geocheroical survey for uranium deposits in northwestern Luzon. PAEC Report, Geezon City,

7. Hernandez, E.C., et al., 1931 Detailed Survey for Uranium in A<r'-, Balanga and Butayong, Baay-Licuan, Abra*

<•*)**><•

PAEC (A) IB 83007 Page 1*

Melendres, Jr. M.M., 1977. Photogeology and stratigraphic correlation of wells and surface sections, Gagayan Basin, Philippines. Proceedings: 5th Symposium on Mineral Resources Development. Bureau of Mines.

RP-Japan Project japan international Cooperation Agency, 1977, Report on the geological survey of northeastern Luzon, Bureau of Minos, Dept. of natural Resources.

RP-Japan Project Japan International Cooperation Agency, 1979, Report on the geological survey of northwestern Luzon, Phase I. Bureau of Mines, Dept. of Natural Resources.

Santos, G. et al., 1980, Uranium geochetiical exploration in northwestern Luzon, proc. Mineral Resources Development Symposium, Bagnio, Bureau of Mines.

FAEC (A) IB 830C7 Page 15

Table 1. Results of uranium and trace elementr.analyses of panned heavy minerals from northern Luzon. (Values in ppm).

Map. Sample U Cu Pb Zn Mn kg Co Ni No. No. 2968 1 0.1 24 ND 18 172 ND 8 28

2 0.2 2 4 14 148 ND 8 16 3068 1 3.1 288 1040 2090 27 2 2.4 304 172

2 0.5 23 20 24 196 0.8 8 20 3 0.8 960 36 350 496 1.6 20 28 4 0.3 7 16 23 172 ND 8 8

3069 1 0.3 1:> 4 15 99 0.4 4 4 2 0.3 8 6 91 0.8 0.01 8 3 0.5 6 4 6 72 0.4 0.01 8

3069 4 0.4 6 16 6 155 ND 2 2 5 0.2 4 ND 7 123 0.8 2 2 6 0.4 34 WD 12 3 30 ND 6 4 7 0.1* 6 40 7 112 ND 4 4 8 0.4 23 4 10 127 ND 4 1 9 1.0 14 8 17 206 0.4 o 14 10 0.9 8 16 11 126 ND 6 4 11 0.4 11 4 s 130 0.4 5 4 12 0,4 6 4 9 I2r> ND 4 4 13 1.2 19 4 12 164 0.4 5 4 14 0.3 11 12 8 104 WD 2 3 15 0.9 6 4 8 110 0.4 3 1 16 0.9 8 4 7 106 0,8 4 2

PAEC (M IB 83007 Page 16

Map. Sample [ U Cu Pb Zn Mn Ag CO Ki NO. no. 3069 17 0.5 24 4 10 122 0.4 5 6

18 2.4 139 8 18 138 0.8 14 14

19 1.5* 12 8 10 143 0.8 3 2

3069 1 0.5 31 12 23 224 «D 4 ND

2 0.4 10 12 15 220 MD 4 ND

3 2.3 192 4 28 1050 276 3 220 124

4 0.7 61 12 28 284 0.4 8 ND

5 1.0 24 12 2C 316 0.4 4 MD

6 0.9 46 16 46 368 im 8 12

7 0.6 39 12 39 552 0.4 20 20

8 1.3 28 4 28 208 0.4 8 8

9 1,4 28 16 28 196 >TD 8 4

10 0.5 48 24 48 836 0.8 24 32

12 0.4 12 MD 28 268 MD 4 8

3070 1 0.5 1068 28 112 259 0.8 40 20

2 0.6 980 36 61 223 0.8 64 24

J 0.2 / 12 12 83 0.8 2 6

4 0.4 8 4 9 126 MD 2 4

5 0.3 6 ND 9 138 ND 2 3

6 0.4 c ^D 16 121 ?TD 4 2

7 0.4 1 ND 14 146 0.4 3 3

8 0.7 10 !''D 9 193 0.4 4 4

9 0.5 8 4 8 140 0.8 3 2

10 0.4 8 4 6 62 0.4 0.8 0.4

3070 4 0.2 10 12 16 184 0.4 4 ND

5 0.1 7 17 14 204 ND 4 ND 6 0.3 13 8 22 296 O.^i 4 ND

PABC (A) IB 83007 Page 17

Map. NO.

sample Ho. u Cu Pb 2n .. Kn \g Co

* Wi

3O70 7 0.1 14 12 16 240 0.4 8 MD 8 0.2 11 S 16 292 0.4 8 ND 9 0.1 8 12 24 308 8 TD 12 10 0.2 6 20 15 228 o.e 8 im

12 0.5 604 20 30 324 0.4 32 ??D 3071 1 0.6 12 12 13 ?A ND 8 16

2 0.2 10 8 lo 171 ND 8 8 3 0.4-* 8 3 ll 192 ND 12 8 4 0.4 19 16 18 292 MD 24 12 5 0.1 3 4 9 223 SO 12 8 6 0.5 70 24 55 282 ND 12 44 7 0.3 3 4 32 179 ND 8 8 8 0.5 14 4 10 144 0.4 3 15 9 0.3 10 ND 13 126 0.4 4 2 10 0.3 21 8 14 1.0 8 21 11 0.1 6 8 9 217 15D 4 4

3071 1 0.2 10 8 15 272 ND 8 WD 3 0.1 14 fl 35 340 MP 12 8

3072 1 3.2 43 12 21 239 0.8 8 MD 2 0.2 44 16 20 178 f!D ?D 3 3 1.10 38 16 18 239 ND •3D 8 4 0.9 33 12 31 323 0.8 24 20 5 0.8 1.2 4 10 139 ND 12 4 6 0.3 132 954 28 21S 0.4 12 4 7 0.3 12 MD 6 107 ND 8 4 e - 10 28 12 185 ND ND 4 9 0.8 13 4 21 361 ND 12 8

PAEC (A) IB 8300? Page 18

Semple HO.

U Cu Pb Zn Mn Ag Co Ni

2372 io 0.3 4 8 11 132 ND 12 4 SC72 */v 2.2 80 12 51 404 0.4 12 8

2 0.2 16 16 29 340 0.4 12 3 3 o.e 23 12 50 512 0.4 12 12

307 3 1 2.2 12 80 14 128 ND 4 4 0.3 0.8 16 10 112 0.8 8 3

3 ND 11 12 11 153 0.8 8 24 4 0.3 6 8 11 138 my 12 8 5 0.5 68 20 28 339 ND 12 36 6 0.2 45 16 25 203 0.4 20 16 7 0.5 27 28 21 163 0.4 16 52 8 0.2 54 32 24 220 0.4 12 32

. •->. i 1 0.3 48 28 40 364 0.4 12 32 2 0,3 8 24 23 288 0.4 12 26 3 0.3 15 28 19 386 0.4 3 16

31.63 3 4.1 427 340 620 576 2.0 116 64 0.2 69 20 200 960 viy 4 32

5 0.3 28 12 22 364 ND ND 28 6 0.4 56 20 37 624 MD 4 24 7 1.6 20 8 10 364 UD ND ND 8 0.5 14 20 11 148 0.8 8 32 9 0.2 48 20 72 980 0.4 ND 12 10 0.8 100 20 61 400 ND 12 20 11 2.3 31 12 63 412 ND 8 12 i 2 0.5 11 12 32 360 0.4 8 12 i 'J 0,6 13 8 38 348 0.4 8 12

"> 1 r *>. i 1.2 23 16 19 156 ND 9 7

PAEC 4A) IB 83O07 Page 19

Map. Ho.

Sample No.

U Cu Pb Zn Hn Ag Co Hi

3169 2 2.4 14 12 9 182 ND 4 1

3 0.6 636 406 66 398 1.2 10 7

4 0.9 83 91 74 1034 0.4 12 6 5 1.0 3757 572 2187 123 2.0 -*95 128 6 0.3. 3741 290 l»6 U" 2.e 230 57 7 0.7 3646 127 143 110 2.8 186 27 8 1.2 296 600 10 345 1.2 6 5 9 0.1 16 8 25 334 0.8 14 21 lo 1.4 1908 14712 103 353 1.6 30 22 11 0.8 966 87 73 266 3.0 127 39 12 0.9 604 517 1113 4811 2.8 85 38 13 5.0 616 39O0 171C 314 3.0 168 59 14 3.6 883 1270 2068 203 5.2 160 64 15 2.3 1066 871 2425 497 3.6 150 61 16 0.6 859 234 1034 279 3.6 151 106 17 0.8 143 231 262 257 1.2 23 10 16 1.0 184 32 66 298 0.4 92 19 19 0.4 45 20 34 557 HD 26 46 20 1.4 412 274 744 141 0.8 130 62 21 1.5 16 12 16 465 WD 12 6 22 0.2 205 64 50 87 1.2 125 #8 23 0.7 280 12 24 282 ND 31 25 24 0.7 49 20 29 326 0.4 17 12 25 0.7 83 20 68 700 0.8 29 10 26 0.6 257 219 338 254 2.8 121 42 27 0.7 148 302 167 188 2.0 83 27

3169 4 1.3 60 12 45 360 ND. ND ND

PAEC (AJ IB 83007 Page 20

Hap. NO.

Sample No.

U Cu Pb Zn Mn A9 CO HI

3169 5 0.2 32 12 34 736 0.4 ND 60

6 0.4 358 96 270 452 2.0 20 36 7 1.2 100 28 39 284 0.4 18 28

8 0.3 352 936 2360 964 3.0 84 48

10 0.9 167 268 12 1410 3.0 ND 12 11 0.6 70 20 69 724 ND ND 4

12 0.4 286 120 230 612 0.4 24 20

13 O.S 37 8 32 810 MD ND ND 14 0.9 880 12 5? 378 0.4 MD 4

15 0.4 732 12 40 344 NO ND 4 16 0.8 120 36 85 728 ND 4 4 1? 0.5 36 20 904 904 2.0 24 64

3170 1 0.1 2 ND 7 96 WD ND ND 2 0.2 8 riD 14 102 FD 4 ND 3 0.2 27 ND 16 378 ND 8 4 4 0.7 51 ND 16 186 KD 12 4 5 0.4 41 4 17 514 ND 8 8 6 0.5 87 20 185 367 ND 20 12 7 0.6 859 72 311 223 2.4 127 64 8 1.5 907 95 498 311 4.0 159 91 9 0.4 2966 88 528 263 3.2 68 44 10 m 37 MD 14 153 ND 8 4 11 1.8 4 2 16 64 465 ND 17 12 12 0.8 18 4 12 922 0.4 6 4 13 0.2 23 4 8 421 0.4 4 1 14 0.5 57 4 8 481 ND 3 3 15 0.4 37 ND 11 314 ND 7 2 16 0.5 15665 270 1600 182 2.4- 190 113

PABC (A) IB 83007 Page 21

:-:ap. Ro.

Sample u No.

Cu Pb Zn Mn A 9 CO Hi

3170 17 2.6 102 20 72 166 ND 14 11 18 0.4 11 « 10 257 f*D 7 8 19 0.6 17 8 60 261 0.4 17 11 20 0.4 9 12 9 330 0»4 6 8 21 0.7 1566 199 851 176 2.8 70 51

22 0.5 372 91 131 214 2.0 165 SI 3170 2 0.5 7600 136 670 256 6.0 52 44

4 0.3 187 48 180 448 0.4 »?D 8 5 0.2 20 20 31 616 ND MD a 6 0.4 21 12 32 1600 0.4 ND 8 7 0.4 44 8 36 608 0.8 ND 4

3171 1 0.2 17 VD 10 118 0.4 5 11 2 0.3 17 ND 8 139 ND 5 16 3 0.3 32 103 9 128 0.3 10 38 4 't 0.2 4 3 7 77 ND 2 8

1.8 51 8 33 246 0.8 17 21

6 1 • •# 46 8 17 316 0.8 10 29 7 - 21 4 9 120 0.8 5 12

2171 2 0.4 72 12 73 580 0.8 ND 8 3 2.6 135 48 230 522 ND 16 16

3172 1 1.0 5 24 12 164 ND 8 8 2 0.3 2 4 4 296 0.4 8 4 3 0.4 10 ND 7 108 0,1 4 4 4 0.7 9 8 13 219 0.4 4 4 5 0,8 12 4 13 176 ND 4 HD 6 3.9 58 152 49 221 o.a 8 12


, B Cu Pb *» M n A " C ° N l

Map. Sample u c.u SO* HO. 4 9 224 KD 4 8 »179 7 °» 4 4 w. 3 1 7 2 ' .«, «n 8 UD

rt , 9 Q 7 194 WD 8 -»•; 254 0.4 8 «

9 39 ND 2 5 254 • ^ 10 2.60 28 4 18 2*4 °' 8

28 219 0.4 8 IX 2.0 33 4 12 2.0 30 8 13 0.2 10 8 14 0.3 9 4

0.4 12 12 0.4 19 20

15 lb 17 0.4 8 19 3.0 46 20 2.0 91 21 1.0 21 30 6.2 130 31 1.2 30 32 1.0 50

33 2 ' 2 4 4

35 36

3 4

32 340 0.8 20 8 U 160 0.8 4 4

10 206 0.4 4 12

n 139 0.8 8 8 19 227 0.8 16 2 4

1 3 228 0.8 8 12 27 295 0.8 32 8

12 62 337 1.2 20 12 14 180 0.8 8 8

60 36 198 1.2 16 "

1 9 304 0.8 12 8

12 33 394 1.2 32 20

44 29 288 1.6 3* 1 6

1.2 20 8

12 8

4

8

34 H.0 17 8 11 1^2 3 2 35 330 0.8 36 16

3 1 294 0.4 16 I 6

32 161 449 0.4 20 24

3 2 69 480 0.4 20 16

5.0 124 2.0 60 8

37 0.9 217

3172 1 l ' 1 6 ?

1.2 50 1.2 35

5 0.2 18 7 1.8 80 16 80 484

1 6 53 404 0.4 12 8 28 44 280 0.4 12 8

0.4 16 16 16 41 336 0.4 8 4


Map. J?o.

Sample NO.

U Cu Pb Zn Mn A9 CO Nl

3173 1 0.2 5 ND 2 102 ND 4 ND 2 1.4 676 28 184 988 ND 72 20 3 0.8 29 16 11 256 FD 16 4 5 0.4 10 12 6 207 ND 4 ND 6 0.3 72 4 37 1598 ND 8 ND 7 0.4 6 8 5 202 ND 4 ND 3 0.2 22 4 5 442 ND 4 ND 9 2.5 85 24 55 303 ND 56 8 10 2.0 125 60 41 311 1.2 91 8 11 6.0 425 72 58 235 2.4 28 8 40 0.1 25 8 29 272 0.8 8 12 41 0.2 8 8 11 112 ID 4 8 42 0.5 44 ND 6 75 ND 16 4 43 0.3 63 ND 7 80 0.8 16 4

3173 1 0.3 46 16 28 308 0.4 16 4 3174 1 3.1 15 12 19 192 0.8 16 4

3 1.7 58 12 24 i->2 0,8 24 4 3 0.6 64 40 52 454 0.8 28 32 4 2.4 130 557 16 110 0.4 4 4 5 0.4 9 32 12 196 0.4 8 40 6 0.8 5 24 11 206 0.4 4 4 7 0.4 22 60 22 3S9 0.8 8 4 8 1.5 6 8 26 205 0.4 8 4 9 1.6 8 16 15 162 0.4 8 8 10 1.4 28 40 20 162 0.8 8 8 11 0.7 22 16 35 203 1.2 24 20 12 0.7 11 44 15 203 0.4 12 8


Map No, 3174

3174

3175

Sample No,


13 0.1 10 12 10 193 0.4 12 3 14 0.4 14 4 19 211 ND 12 8 15 1.4 16 4 16 186 ND 12 4 16 0.2 14 8 12 311 ND 12 4 17 O.l 11 4 9 211 ND 8 4 18 0.4 17 52 22 148 0.4 8 12 19 1.2 61 20 43 202 0.8 32 8 20 0.6 59 20 48 394 ND 28 8 21 0.4 42 24 71 426 0.8 24 8 1 0.6 17 20 24 380 ND 16 4 2 0.4 34 12 22 268 ND 8 4 3 1.0 30 12 23 216 0.4 12 4 4 1.4 31 12 22 168 0.4 12 4 5 0.4 47 16 60 416 ND 12 8 6 0.2 26 8 24 188 ND 16 8 1 0.8 6 24 15 450 0.4 8 64 2 0.2 117 16 25 398 ND 28 96 3 2.0 4 4 13 123 ND 8 16 4 0.6 58 12 15 114 ND 12 100 5 0.7 5 4 10 201 ND 8 72 6 0.8 16 20 13 203 0.4 16 135 7 0,4 30 4 8 124 ND 8 16 8 0.1 21 8 16 189 0.4 8 28 9 1.3 5 36 7 154 2.0 16 64 10 0.7 51 32 51 510 1.2 24 139 11 0.3 22 16 31 279 0.4 12 16 12 0.3 31 6 15 215 0,4 16 8

Map Sample u Cu Pb NO. HO.

13 0.7 75 36 14 0.3 51 32 15 1.4 22 12 16 0.8 104 20 18 0.2 8 4 19 0.3 6 4 1 1.0 93 8 2 0.6 11 8 3 0.6 58 12 4 0.5 55 24 5 0.2 48 24 6 0.3 26 12 7 1.4 30 20 9 0.2 25 16 11 0.1 42 24 12 0.1 34 24 1 0.7 25 8 2 0.3 16 16 3 1.2 34 32 4 0.3 9 12 5 0.9 14 8 6 0.3 24 8 7 0.9 23 12 9 0.3 25 16 lc 2.0 10 8 13 0.3 39 8 14 0.8 15 4


Zn Mn Ag Co Si

57 223 0.4 36 20 16 188 0.8 24 16 18 182 0.4 12 8 82 263 0.4 24 16 10 355 0.4 § 16 8 108 0,8 8 8 26 208 ND 16 160 13 160 0.4 12 128 28 296 ND 8 12 72 704 1.2 16 108 63 748 0.8 4 40 31 472 0.4 8 12 26 328 0.4 8 12 41 672 ND 20 64 63 880 1.6 36 36 29 412 0.4 16 8 24 428 ND ND 4 18 522 ND ND ND 23 880 0.4 ND 4 40 484 0.4 ND 8 21 250 ND ND 8 32 404 ND ND 8 66 690 ND ND 4 92 780 ND ND 4 11 ND ND ND 16 30 458 ND ND 4 33 528 ND ND ND

PAEC (A) IB 83O07 Page 26

Map NO.

Sample NO.


3268 15 0.5 28 40 24 762 ND ND ND 17 0.4 15 8 35 608 ND ND 4 18 0.5 26 8 17 428 ND 8 4 19 1.8 21 8 10 252 0.8 8 12 20 1*2 29 ND 13 320 ND ND 4 21 0.4 16 4 14 240 ND ND 4 22 0.4 24 16 47 464 1.2 12 8 24 0.8 16 12 16 288 0.8 8 8 25 0.6 78 16 46 656 ND ND 24 26 1.2 42 28 65 808 0.8 16 12 27 0.4 30 72 55 692 0.8 24 12 28 0.6 25 12 64 1780 ND ND 8 29 0.4 16 16 50 564 ND 16 12 30 0.9 68 20 40 860 0.4 20 8 31 1.4 103 36 47 1436 0.8 28 12 32 1.6 62 20 54 820 0.4 16 3 33 0.4 18 20 24 504 ND 8 8 34 0.6 19 4 31 680 ND ND 4 35 0.4 78 36 65 768 0.8 24 12

3269 1 0.5 14 28 29 560 ND 4 12 2 0.3 16 8 11 244 ND ND 4 3 0.1 26 26 39 824 ND 4 16 4 0*2 21 6 18 384 ND ND 12 5 0.4 37 36 42 696 ND ND 16 6 2.1 34 12 18 656 ND ND ND 7 4,4 148 48 39 1444 0.4 20 4 8 0.5 5428 464 39900 1524 ND 16 4


Map No.

Sample No.

U Cu Pb 2n Mn Ag CO'. Ni

3269 9 0.7 55 16 56 740 0.4 12 20 10 0.2 231 52 2230 1320 0.4 4 4

12 2.? 74 28 79 1540 0.8 4 4

14 0.6 35 12 50 480 0.4 8 28 15 0.7 25 16 44 720 0.4 4 12 17 0.9 25 52 54 880 0.4 8 4

19 0.8 27 20 51 1044 ND 8 8

20 0.3 20 12 46 620 ND 4 16

21 1.0 15 24 46 496 ND 4 12 23 1.3 49 36 46 2324 ND 32 28 25 0.9 24 12 21 340 ND ND 4

26 1.9 61 28 34 536 ND 12 8 30 1.9 76 28 38 648 0.4 12 8 31 3.2 116 36 55 1128 0.8 16 8

32 3.08 169 36 54 1812 1.2 16 12 34 1.0 46 24 37 420 0.8 16 28

35 0.4 58 16 47 700 ND 16 24

36 0.3 29 12 34 444 ND 8 24

37 0.6 38 20 47 524 0.8 24 44

38 0.5 40 12 37 536 ND 8 20

3270 1 ND 14 20 16 456 ND ND ND

2 0.1 33 8 13 296 ND ND ND 3 0.5 18 12 11 204 ND BD ND 5 1.1 103 104 600 440 ND 4 4 6 0.3 38 12 46 440 0.4 12 32 8 0.4 20 8 24 460 ND ND 4 9 0.7 123 36 50 576 0,4 40 28

PAEC (A) XB 83007 Page 28

Map NO,

Sample no.

U Cu Pb 2n Mti hq GO Ni

3270 11 0.2 26 28 11 400 m> 4 28 13 0.4 3 4 8 136 ND ND 4 15 2.1 52 40 69 1000 ND 8 12

3271 1 C.3 446 28 1340 1560 ND 44 28 2 0.6 81 20 140 860 ND 8 16 3 0.4 59 12 66 480 ND 20 24

3275 1 1.6 13 20 48 424 ND 8 12 2 0.9 24 24 49 524 0.4 16 20 4 1.6 ND 12 23 132 ND 4 8 5 1.6 ND 24 17 132 PD 4 8 6 0.5 20 24 SO 460 0.4 20 16 7 0.3 41 32 48 576 0.8 24 16 11 0.4 27 36 61 696 1.2 24 32 12 0.2 19 24 28 504 0,8 20 40 14 0.6 23 28 46 296 0.4 24 36 15 0.3 8 20 36 444 0.8 16 28 16 0.7 42 40 45 r>64 U 2 24 16

3369 1 0,6 30 16 16 680 ND 8 4 2 ND 40 16 36 840 ND 8 8 3 0.6 23 12 20 604 ND 4 4 4 0.4 14 12 23 724 ND 4 ND

3370 1 0,6 2 16 19 488 0,4 8 ND 2 0.3 14 16 25 1214 ND 8 4 3 0,5 14 24 32 316 1.2 12 24 4 1.9 36 72 77 1324 NO 8 4

3371 1 0.6 20 12 31 444 ND 4 16 2 0,6 M 12 33 340 ND 4 4

•688*-'


Map NO.

Sample No.

U Cu Pb Zn Mn Ag CO Ni

3371 3 1.0 20 12 56 600 ND 8 12 4 0.4 30 20 33 2400 ND 16 16 5 0.5 35 24 33 480 RD 8 4 6 1.1 28 20 42 540 ND 8 4 7 2.1 10 20 22 440 ND 4 ND 9 0.2 37 8 35 600 0.4 8 4 11 0.6 26 12 35 564 ND 8 8 12 0.4 40 28 59 460 1.2 12 12 13 0.5 4 32 10 168 0.4 4 8 14 0.8 9 16 17 256 0.4 8 12

3371 1 0.6 30 24 54 512 0.8 12 16 2 0.7 10 28 18 592 ND 8 16 3 0.4 31 40 42 424 0.8 12 16 4 0.5 24 16 37 368 0.4 12 16 5 0.8 23 56 33 360 0.8 12 12 6 0.6 23 72 39 372 0,8 16 28 7 0.5 7 20 16 808 0.4 4 8

3373 1 0.3 39 16 35 356 0.8 24 20 2 0.5 5 28 59 432 1.2 16 16 3 0.3 3 28 64 ?32 1.2 20 24 4 0.4 7 32 61 448 ND 20 28 5 9.6 2 12 34 448 0.4 20 20 6 0.6 8 48 74 636 0.4 32 24 7 0.4 15 40 96 468 1.6 24 12 8 0.7 11 36 83 476 0.8 24 12

3374 1 0.4 34 20 66 636 0.8 24 12 2 0.5 22 36 70 572 0.4 24 16

Map No.

Sanple NO.

U Cu

3374 3 0.3 53 4 0.4 35 5 0.5 14 6 0.6 12 7 0.4 18 8 0.9 28

3470 1 0.2 21 2 0.2 16 3 0.6 18

3475 2 0.4 28 3 0.5 22 4 0.3 73 5 0.2 50 6 0.5 35 8 0.2 37 9 0.2 51


Pb zn Mn Ag Co Ni

32 68 684 0.8 28 12 16 24 204 «D 12 8 12 43 368 ND 12 8 32 56 568 ND 20 12 16 41 456 ND 16 8 12 59 456 0.4 16 12 20 51 480 ND 4 4 8 16 188 0.8 4 4 12 18 220 0.4 4 4 12 28 328 0.4 12 ND 24 22 360 HD 8 ND 28 73 528 0.8 24 8 12 50 492 1.2 20 8 12 35 288 0.8 8 8 12 37 304 0.8 12 8 20 51 540 0.8 16 16

PREC(A)IB 83007 Page 31

Table 2 : Average Background and Threshold Values of Uranium and Selected Elements in Heavy Minerals in Northern Luzon

Parts Per Million

Geological U Cu Pb Zn Mn Ag Co Mi Units

Bkgd Th Bkgd Th Bkgd Th Bkgd Th Bkgd Th Bkgd Th Bkgd Th Bkgd Th

Sedimentary $ 8 $ k ¥ o l c a n i c °' 5 2'5 3 4 3 5 ° 1 5 4 5 1 2 1 2 5 3 0 ° 9 0 ° °* 4 °» 9 2 0 4 4 i o 4 5

No. of Samples 354(1) 357(5) 351(12) 358(5) 360(3) 361(2) 360(3) 361(2)

Intrusive rocks 0,6 3.0 28 118 16 42 lO 150 420 1050 0,30 0.9 11 19 15 35

NO. of Samples 54 51(3) 50(4) 50(4) 50(4) 54 51(3) 51(3)

Composite Units 0-5 2,8 15 190 3 H O 19 130 300 1050 0.8 1,4 21 41 18 40

Sed., Volcanic & Intrusive) No. of Samples 413(2) 408(9) 413(4) 406(11) 412(5) 423(2) 421(1) 423(2)

Note: Bkgd-Background ( )-Excluded High Th- Threshold Valu«s

PAEC (A) IB 830D7 Page 32

Table 3. Correlation coefficient between uranium and the trace elements.

Elements Correlation coefficient

U vs Cu 0.004 U vs vb 0.113 U vs Zn 0.010 U vs Mn 0.029 U vs t\g 0.187 U vs Co 0.207 U vs Ni 0.066

mmm H E ^ i i

« t *W

FIG. ^GENERALIZED PHYSIOGRAPHIC MAP Of NORTHERN LUZON APTW HtlfNWtt*, WT7V MOWlfD

""fT

15' 45' r—p

3C 45'

r

LEGtVD SEDIMENTARY AND VET„r,'CRf'H:C ROCKS

nECENT

'5,".^' P - ; * « * E t_- - ^El-r^CEfiE

f~.\ "" u'PFES

r * . " • . . • • • • • * • • • *

t _ I - MIOCSME

f K - ' ChE-.-ce, s 1. .' ' - .....E.OErjE

• • I . J - ' jnri , c , > , i o t ' ! e , e»C

•- f .- • - , t i l - . . f r . ' i f t y

V . r - e •!••[ . • • f v .e<* o .

I SECTilM !

30' - -

IGMEO'JS ROCKS

I N T R U S I V E ROCKS

r- -NEC GENE

i — ..-'SiETACEO .IS

• - iFOGENE

, ' ; C.'-N C ROCKr

&=m I ' i ' 'CENE E3 j lATERNAKY

nrv-vi | v K r c | , h t ' . .CE i , c

h\ t . t«;L>tNt

B.A.Vfii/1 B.4r

r.fn - Mi'icene ^ J U M ; dionte '«'• ?.11/ botho.itri": >>nd STOCKS

..tr-;miif ic '.r,o mof ic t . iTonic

.rnK-S'tu: 'M?o,ric. [ .J9*. cones

& H :-!WE^nNE OEJLOG.CJM. SYMBOL:-:

, S '.'

S'. . . ">,• .• f i * - ' /. - i 1 - . ' t i r . F F K h F ' . , M..L I H f

* - ' : " I L L ; E , ' M I M''

-v • . • • . • : • • • , 1

'<* J E ^ ^ ' . G Ml f . f

X V . i t . t n , . • F.( . "

• 0 - . . . v . ^ t . •.:-T'>

i j • w. W U * , . • ..! .•

t . c

Geo• eg/ r / ^ j ' e o j , ! V i " * - , !.*6.'

SCAI r Z 50,000

A

K * E ' ; -f-

SECT I I N 2 BABUYAN CHANNEL

T=JA A A A / 1 ' & A M ' . ' - A A A A A-

A A AA A .. A A A A A A '

j,- ft A A A A A ', / A * A A A A / ' . ' A A A / A A A

' , £ / A / A A A A A' " C X i ^ A A A A A

* ^ i * A A A 0

A A A A A •* ' ' A / A A * A A A A A / A / , / ' A / " A A A ' A A / / / ^ ' M A A A A A A ' / A A ' " . A A A

A A A / A A A / \ A A A A A A A A A A A A A A > A A A A ' ' A " A A / ^ A * A A ', A A ^ T A - ^

A / A A d ^ A A A / A / A y ^ A A A A A A ' A / A / . A / A

.A A / A A A A A A ' A JT A A ' A A A A

A A A A A A A ., A A A A A A A / ' M ^ A A "' A A A A A A I ' A / A A A

' N \ * A A A A A A A A A A:

5 7 A A / A »; A A f l j A A U * ' Aft A A A A A ' A - A -

* / A A 1 • A A A A

;A / A A A A ' A A A A: A A A A A A A A A A •

1 A A A A A \fl -*-'J, A.

M A:

71MNVHD XVAfiaVi

•5' —

ftff,

t^

CO

^^F

CABUGAOBAY

;t , t~ i i

'», •£ i ':

r . • ' !

V

\

IK

\ \

\

vvzi —

, , . .< A /> ,' (. mr~ . . , A A A A A A A A A A A A A A ' A . _

, ( i U f , A A A A. A A A A 6d> A A A A A A \ A A A A A A A A A A A A A A A A A A A A A f A • M M ' M A f t f A A A A f A-A A A A A A A "i A A A A A / A A A A A A A A A /¥ A A A A A A * .1

' V Aw A A A r ; ; *

\

WAR!,

\

\

f - .,_"

W ' \

X \

N. \

\

. J >v

^'. I"

A-n'

; \

\

/T

-1 ^

r T ^

7 V V V V

,-vv

J !\J * V J j I > , J J • v v J J / ; '; V j t j j 4 i i 4 : .

•J.j J i i ; J 7 J i v j w % / v / / .' •«

+ I ' i i J i . - j \ • • t i ^J J J V V V V VJT VV y V V V \ V .' V V V V / V U \ , / V l

, y V V «f V y 7 V y V v y v '. i V / i V V/J V / V / V V y '>

/ y ;

7 Yr

-• • -HI V-

/

A-

Tw ''KP4

v v v >/ VA . v V \ ^ ' ' <V > • > v v v' J v i*\'»-»V,

v w ' y V v v / v v ; ' -'• v AV v ; V v v v >/ \ \ / / V / 7 , 7 7 7 7 *

V v 7 \ 7 ; v v 4 7. :*• • \ 7 -m JXJ i / J ' i » •

•^vi

. V 4, W V \ V V 7 7 7 ,' 7 y > y 7 ;

.*,. • y W ' \ ,,,/ ,, , • . , . ,, ,, ,, \ .., ,

KPW,

V ^ V V V V V v >

Kp,

7/

8C

V'. V 7

: S " | ' » # V « * y ; , * / * w 7 V 7 7 v \ V V , / ' ^ v / ; 7 / j \ i , mi i s

i v ; v 1 l i y

v / / ' y y / \ / v

V V V 7 V 7

V 7 y / \ ^ V 7 7JLV

VVvv>7VvA'V/Vvvv

-.. I

V-VVKpflV.* V W V V y 7 A / v | / V V y V 7 , y - ,

V 7 V V 7 V V 7 ; W 7 / » ' vvA. ivVVVVVYvv; ;

v v \ l v v v v v v * v y v > vvv 7 7v ^wyvv >

k / /

^

v r *<

FIG. 2 GEOLOGY NORTHWESTERN I SHOWING SAMPLE LO«

i A ; SfCTl iN 11 15'

v • .• •; /

/ ,

\ J i A Cv ' / ; >

v.'. ' . \ ; > ,-'/ '• V / V ^ / ,

" * i <''j.y

' H \: •X.

FIG 2 GEOLOGY OF NORTHWESTERN LUZON SHOWING SAMPLE LOCATIONS

- i * ' i22°00'

i B ABU YAK CHANNEL

| SECTIIN 1

'. N .

_ ,fi.

- \ » ' -US

i i{:'7i;ii-p:i:v^^\/ % ^ -VV \Nt. V

V V

. . . / • ty v v v , l \ ' i \ V >/ Qy ,'V V l / 7 ,

•^- , ^ • r v v •/ •/ •/> ; ;„<?' v v v v , , v : . s V v v ; X V " . Y V V V -v i/v vv v .• -<y< / v v v v i

; J ^ - ^ ' . / v v vv v v ^ r , / y 7 v v v v v v v v y r / / v v v v v v^ i ' V W V V . ,• v H ^ V y. V' v V V V V N [ '

',, 7 / / v J v 7 y v ; v V 7 v 7 V V

V V 7 7 7 J J V V V V V V V V V V X W

< P Y <

, V V V 7 i ; 7 v v ^ v ; / v .' 7 7 •*;"': V t i I v 'J ••>''<' > ' '•/'• " v

v V VJ vr/. 7 Vy^V V 7 V

v,vv7 v /x-¥-v-7^ .;• f 1. ; 1L.1 • .''" "•'ji<T-i"x,'', .'. , ., J•, , 7 v 4 Y< J t - ^ r V ^ / v K p g v v v,«v 7 v'/.••L#*n

/ -^^ •\XM-'-^-J^^' 4^J*'^ VA^i/riTiJ. • -J 4vT V* \~^ V V V / ,y* 'J J/J 7 7 7 \>, •[

SCALE i: 250,000

\T< (

r'l

i C "

••* j - ^ r \

K ' C < ' - '

fei-£9-^ .5i 5ft ) I - ' .6 1 *

i'if! 30>; r

s f , ' 3

it,

I 34 ?.'

i 347 ..

*£-*

:2 V,

INDEX MAP

« * S E C T I O N 2

45'

SCALE i: 250,000

— .50'

. " o r 3C" ;2-*rc' 3<"'

. r-~.

I f . ' C C ' r n

u '

2-'»•.' 2(y,r

• a - ' n u ' 31..'

-^?x.

i v . ' 3 , / ' - 3^73

|i: - f.<J-~\ .1. <;« / , ' , 6 % .'<:"-«

3 , * / T

_'"•/•* . ' 474-

/ i

j " > 7 i 3 4 73 V i I

37, ' a 3 4 7 i S 3"V. --4.T \

3* .v /

* 3-.<u J-

32*8 &.4 7J - I C ' u u

316 / 3c*,: If** 7 I l ^ . .. .

IMDEX MAP

— 15'

f SECTION 3

; ' ' " i ' i i |

'1 ' ' '. ' ' ' \ » c

A*

Tuguegoroo. o

R

- - - N

...15;

V V V

W V W V

V v v v v v

V VW W V v v \ v v v, V VVV

v /vvVw V \ V V V Vs"!

V * V / V W V '.\V v v ; w v v v v

; V V , .*. P?V V ; w w v v v v v v W W W 7 VVV

.: / w w w v v v . V V W W W 7 7 V V V v w v w w w v / v v v w v v v v v. . W W V V V V V V V i / ' W W V V W V V V V V ; v v v w v v w v v >' V W V V \ v V V V v

V V V V V V\V V ' W V V V V'

W V W V V • V V V V V V V V V V V 7 V V .

V V V 7 V V V V

•1

N-, '- '\ V,i 7 •If #

V

V V V V VV V V V V V . V V /

/ V . 7 V

7 V V 7 Kpg 7 V 7 V V 7 7 V V V

v v v V V V V V V V V V V V V V V V V V V V V V

V V V V 7 7 V V V V . s, V V

\

^

re

S E C T I O N 5

S5

W

i>/n

i [ 1

S3

>-<

13

13

ft

— I8°00'

— 45'

- 3 0 '

*»

!

i

i i

1

|

1

]

|

|

| i i i

1 S E C T I O N 6 •

'

H r\ • s

X

i5' " - ~r

i /°00

l v,

' <

•5J

S E C T I O N 7 • r, : i"

I

v v v v •; . v v v v y v w v v >

V V V . ' V U V V V '.' . V >;

. V '. . V V '. V \i <! V V . . V . . 'v V V \ '. V V V V V V VV ;

V V V V v

4 1 I , I"

K|,g / v v •. ^ r g x /

05

ft

l \D t / MAP

15'

—I7°00

— 45'

S E C T I O N 9

• • • * . » v . ' ' * \

/ ' • ' • ' - - f T l ^ ^ ' • ••/v.* \

it ; v V v j r ? - \ ; 1. -w , . . . . / •

" " • / v T . ^ . ; , .' . / j , J- J « V / V . . ; .. - J * " •'

/" I

Cope Son lldefonso

S E C T I O N 11

L E G E N

SEDIMENTARY AND " 1

RECENT

PLIOCENE _ P_EI~VCENE

1 UH'EH j P .1. - T r

"! C-.O. 'ENE MVCE'iE

•\>4

Ul

^-^EMFM "CMPLEX

IGNEOUS ROCKc (^ 1 . -tr;e

. f . f . V j E i . - , . , E A GEr.t

VOLCANIC I

uv F - H N / . K -

\ •:)=»;r-

^

X

X

GECLCGiCAL i

-."• i - ' , ' r "'<E ' •'•' '.

O N : i w r . r - I M //?; " I w ' < t i I • , '

" ' . " ! t ;^ r ; i - , s' i' /.

rHf< iST FA )...r, SAA'

V'NC. h.'-i. r ; E F i '.

^ R C , " . C i A i i - A f •

/' V"F" f. L •. -ATI

V ' N - W;.: • •" .'. ; ^ « : '

G e o i o g / I,/ h , -i

FIG. 3 GEOl NORTHEASTE1 SHOWING SAMPL

122° 30'

L E G E N D r

SEDIMENTARY AND METAMORPHIC ROCKS

" 'p j

ec

M

*ECEMr

PLIOCENE t- '_fc l -1rCENE

MS-FEN - \ J ' CE r:E

v_iG. OENE MU . CENE

P A L E O G E \ E

SA^EME^T "CMPLEX

A l l u v i u m , E l j v i O f l l e , etc

f . ' i n n e i n d Ter res t ia , sediments

Vorir,*1 r l t j s t ' r 0 ' . , 6 r ' , : , n

; fcy T j f f a c e o j s sed imentary rocks

M ione - ' ec r - ' t s of A'ncne^, C-C'-J. - r.r.i ree f l imes tone .

Wockes and sholes w i th minor conglomerate and limestone

Grny*a«.«e and metamorphosed Shale

Undif ferent iated omph ibo l i te , s c h i s t s , s lates

IGNEOUS ROCKS (INTRUSIVE ROCKS)

1ENE

• : K E ~ A I . E I " . 5 f.-.cEv GEr.E

ir. lrc • Miocene q i u r t j l i i c n t e M t ^ t . y t c t ho i i t f i ? arid s tocks .

' I ' f i ' . T . ^ t i c end rr.cfi.; t I j t r r n c - i c<«

VOLCANIC ROCKS

uv

. / •-. / ,

'.. Fi.F. : t r';,-.i

' i ;f'-r-

HH

.in-ie-si'ic -r i: - i . i t ic t . j g - - c;r,,-s

S f i i i i c nnd tus ic HHWF is tolly inter cc.'•. »eJ rfit'i <jr-• •- xi.cke^

MESH Nf-

GEOLOGICAL SYMBOLS

f'i KM, ' N C « f < ('

-V

Y y

.-.- i . : , ' , : ? M 6 r A ' M E K E i N F t K h E ' , HACH st,F.-ON M. ' t fNTHMi t fN ' i l r )E

A ' ^ ' C ' N E , SM< /.'ifJG f -J 'NUE " P AXi :

THK 1ST FA j , r , SAW-TEETH OM 0/ERSO:NG SOE

V.INEhAL DEM "IT?, AN'.- t -O: '^SfcNCE "

PNG/ . ' .C IA l CAPITAL

/ VP-. E L.i/ATI- fi

M'Nr H A L O r C !RR c NCE f j

Geology b/ B j r e a u of M ines , >:J6S

— 30'

— 15'

FIG 3 GEOLOGY OF NORTHEASTERN LUZON SHOWING SAMPLE LOCATIONS

!22°30' § S E C T I O N 12

1

~.°co

fc" «A . •HP W W , ' :' ,-"..,. ;'*#5*>&ii*>.,.««»*l£*to' ,a«»4kiiMhwak>a ">«wi, - • ' W d

15" 30' 45'

SCALE i: 250,000

i SECTION 1

5 10 15

3175 c

BAM GUI BAY

I EGt \ D

LOCATION •' F H E H . W MINERALS

c " T f- ,„ - : Q . T G CCRRESPCN" r c

, - T ' N.,. TOPOGRAPHIC N JMBER SYSTEM

t l t A".'', ! j r : ; „ h c . 0Hh.: r tO .nGlCAl.

M j V P F - i i <• -,A-/r- _C5

/ ^ w ' 3 1 7 5 -

3; -"5-5 •

Pogudpud e Bangui/ ^ ^ ^ & - . •

, • - . . 3 1 7 5 - C 3 - ' £ " 7 "

3175-2

l / b - 1 9 .

\ 3175-4 .M/'f.-I j

3 - T - - I

- j o . / LAOAG^

Son Nicolas" c ' "* »«^ • -*,

\ o \

o

- 0 - -!-

Lnkn Panay Dmgros

"•r

121*00' 15'

BABUYAN CHANNEL woo"

I SECTION 2 » I ,

I ^ 7 - e

•'5 -3

PASALENG B A Y / # 3 ( 7 5 9

/ , ^ 32 75-!

B 3 2 7 5 - f • • * - , . Clowtrio 327^4 - ^ N

3275-f

J I 7 5 - , 2 - S " 3,75 S*

^ • \ i # 3 I 7 5 - I ! ./ 52T5.-IZ

"" o CadcadTr |

! f '•

> 3 2 7 * - 7

• ' 2 7 5 - 1 6

Sanchez Mira 30-

3 # " \ '275 -13

2969

/ Pomplo

••f

.0

O 3174- 'J 0°

j§ 3174-S v * ' o3i7-:- ,

Engongo

v;

'0'

C H A X N E h

..Ckmrio 27^-4 • 3 2 7 5 - f

3_75-

•5275-12 • 5 2 7 E - 7

^1^''" 3^15-14 5 CodcodV |

127?-d6

-5 o

. ^ ' 15'

'.' Cnganga *

Z %

<9 O

•. . x >

Botoc 50

H/'OO' —

45' ~

UJ

w

V"

/ »f. r-3073- 4jl4Lt,

L \ 3 G 7 j - :

CABUCAO BAY ^ • \ > ^ f3-i

i / - - , ;

rv

^ _

••D

/

/

-.3:74-2 • ©

,3174-3 >3!?4-4

3 i73

1 Nuevo Era 0 * .

<£> J?

0 /

, 7 , , * «>*

O C

CO

30'

V-

V I G A N ^

RANGUtD

• ? ' ' * A

' q, o '"

Lo Poz

O .-: -

:- o

" • ' • / '

/ 1

I

kr2-s»cys -. •o--'7* 4

o-

.»\"7i

3 /\_ J - *f • o

/ -.31/',; - J OJT ,? ,3! ^

/V .: O

f O 0

0,3.

.Narvccori

) \

• > i

*

- & . - •

Rancheria

Kobugoo

'On,

•fT

»>.,

! . i C j a n

\ \ / A

cr! a i

f Rizol a

\

J .V

/ - ~-—

/

V flu°f

Bucloc ftittr

i* ' * "> / /7 ff

>*9r

Kobugoo

/• O

- 18° 00'

r Rancherio

Rizal

\ / A

S\

o ' or i a i

^

V

1 -v-." ^

7- 45'

\^ C °

5« , » « • •

^ /Co

UJ

* V

\ - - - 'A.

/•"' . (

\

N

^Santiago

""071-^

4 ^ !0

5%Pandon

3/71 V

"T - 1

J t

\

N /

N ^'

\

<n

\

I a

iJ7i-R o Gregorio del Pilar

Santo Cruz o3i/i--*

\ » - ' ' - ,5i,71-10 V o o. 1 30 71-9 ' 2'"7i"! 0 Wl-f/

4 5 ' -

Q

Q

/

• V . Q3 3170-6,: Jf-\

3 ! 7 u -

V '<•'"'' *070-IU • ' / O

JO /'- 8 •

" ' 0 , , 7

y - ^ u r i -f

• £ > • ' '© ' . / 3v. 1 \ 'i r, -ft . ^

I \ 1 * *+

JU fV ^

, ' ; \ "v., i

•< C

\ "/>-

V - /

+'4 i

V ".. -i

03 i

I

SI - 1 > t

°l • <r< a.'

I !

?„ 1 317C

I

3>/i - 3 # o 3 l 7 - - -5

I * T~ 31 AC

il70-,6jO&ii7o-lC • * # *

7. <;?

\ A

170-4

o • VI:

/ ^Lubuogon

v

,f

/

I

/

V

ji ~ ^ 0 A>

M 0 ^ T 4 ( , - p - R 0 ^ T * C '

,4 i BONToc j - /• '-- " • ^171-7

? ' -7!-^

1 . , ^ V 3 I 7 C - ; , ^

. r O ' ^ - I *

W

\

f # • ' 170 -i*- Jl7n-5 \

0 , l< , \ . - ! 9

• ^ , , •

y

\

^ " ' 0 3 • . . J .

, - ' ' • 3 ^ 7 0 - r - %

^27n - l ! \ ,

i • ^2 7i - «

1270-13

V LAGAWE

" < -

- i':'''.- <»

••ii ..

3 2 7 ( . -«••

iS>

<<? X / V

s>

^-^•s~~ k, Lubuogon

r

*?

/

^ ' _ * C E

/ /

/

&/

**V " 0 U * T A l i r V R 6 ^ H

\

-15'

. /

I7'00'

:»3.To-r-'

3 2 - 0 - 3

V J 7 , : - | | • I •527 i : - 8

LAGAWE # j .

* 2 7 o - l 3 ' < -w :

3 2 ' i - ^

/

^

1 \ J t

1 7 CO

1*

- 4 5 '

•i •; 7;", |G

^ © 3 0 6 9 2

H SAN FtftNANDO

•"VL.-< 3.")hbf- ' 0

10 . 3oe~-:

v o 9 « ' / , 0 n

• J u i c 9 - 4

0 30*59-6

* / . ^ V * , x a . , -> 3IG9-7

-J I 03!69-i4 f

A4°

0 3 0 6 9 - 5 3069-! 3069

30' 3 0 6 9 - 2 • W- Cl?9- t6

, 3C 69 9 \ O

s*%

1

;9-6

K

?

3069- '2 _ g 3 . ; 6 9 i ^

3169 - 8

LG Trinidad

5 3169-9

O 3169-20 o 3169

1 3069 -10

5. ^ Y "

f 6 9 " ' % 3 0 6 9 - a ^

% I 6 9 10 3 i f c ^

A 3 0 6 9 - ! , ' 0

Aringdjf I . G • n. i f f

3' r ? -i?

ir.c , i;

3i*9-

."O c9-!6

3!69-2 ' o BAGUIC^

"5i

%

X. ,169-16 ,0

•30P9-S3 i

\

) V v * \ 3 I 6 9 - I 2 u « 3169-4. '

„ C Q . , o : * T 5169-15 ^ \

tubOOQ,03O69-'?-,. 3i,6 9-V

3069 - l o V , * »V-65-8

\ \

\

3 . 6 9 ° 5 ° A | 3 l 6 9 - ' 3 | 3169-5 C) Y ' f

y >v

jjijon ^ ; ^ 3169-14 7

A 68 -3 / ~

/

^ /

15'-

LJNGAYEJV GULF

\-:> \ / /

.4 i'j6>;- T,'

i f f

L_i / > > , .

f > . e^-"of

/ l I

V 3 i r P -

- Son Fooidri.. ,

3 o a o o

I t

/

L ,

'•wSr

30'

5 i ! ' » i

/»'SoaNiceia

• N O T ,

45'

s

t 3169 ;u

^ 3i<-9-2

\ f v i e G f^__—^ -N • -ft „r* 3 2 6 9 -

3 ^ 24 ^

3i6;>-27©

*>-<-2s/

\ P«0J --JTK Or f

? « o** «ct 7 '---

3269 - l&* ' "

""" . - • j u

j 3 2 6 9 - 2 !

• 5 2 ? S - 2 3

IS9-2U . ,; 3169-7

31C9-6

^ T B A « ) * « O N G

3169-19 . ° / 3 'C9-^ / 32R^ _

' " ' • * - 7

3159 17 , Q 3 » - 3 » » 3269F-35:

52P9-9 - / *32#- 'U

/ » / 3169-21

. . • ' • ^ • 7 ^

* x

/ 3'69 ? 2 W _<? t 3168-5

Aritoo

32C&-5 ; 326b -S, ^

•n 3269-12

A

3 : ^ 9 - 3 ^

\\

3268-!-•

3269-31

3 2 6 9 - 3 0

3 2 6 8 - 2 9 3250 - 3 ;

• 310' ' -6

/ * ^ 2 € ^ 4 ^ 3 2 6 6 - 7

3 2 6 8 - 1 3 V ^ P 0 *

326-v26

J 3268-14 • T ' \ ^ 2 6 8 - 1 8 ^ 3 2 6 9 - 3 ?

'A

o >« o o 3

<

3<68-9

3l68-*4~*7

\

3 : 6 6 - 1 0 • _ -

3268-30.

3268-17

^$26f 6 8 - 3 1

5I6H -S

3268-19 • • 3 2 c « - £ 5

$26S-34# # 3 2 6 8 - 3 5

3268-20»

3268-2 2 » 7 ' / 3 2 6 8 - 2 I

f 3 2 6 8 - 2 H I

432'.'8-2T 1 3268-

^ isontoFe « « - 2 3 ^ M - 2 4 '3268-15

\ : » — " P R O V I N r -

» Son, Nitoios

\ / </ \

\

- Nofividod \ .

»2»#00

LOCATIO: HEAVY MINI

IN NORTHW

I SECTION 11

fe / \ 3 2 6 9 - | ' { *

^; c u - ? c -ft ^ 3269-19

. /

3269 - !&••

! , /

3269-2!

V-- -/

—L /

^ *'• - " 3 9 - 1 5

• a

^ - 3 - >

^ BAWMBONG

K

32 £ 9-W

i . ^ r -

3 . c - f, • ** " - / Bombaitq

3.->f_

• ? : * 9 - 7

\ ""7

/ -3'-" 4-9,

3 i#> 'u ? ? c ^ - 3 2 » , 326S-

32c •..-»» ; ^ : \ \ 3?«> s . - - ' y i

• • - • ^ j /

- 'itOO s i *C;

3>6^->- J ) -

3269-31

3269-30

?S2<. 58-29 3268-32

0 326b-Dupax 32*8-

3266-26

31*i6-IO •

J268-30.

3268-17

^326« ,_/

6 8 - 3 !

S 8 - : B T

3266-14 A "\ 3 2 6 8 - 3 1

-"•i^fi- * , r . - . 3 2 « « - 4

\ r 8- i9 • •32*9-£E

526 tl-34# #3268 35 3268-20#

*268-*2j /^ 3268-21

b 8 - 2 3 / * . 3 2 f - 3 - 2 *

•{•3268-28 I ^32(-8-27 \

32^8-

\ '3268-15

0/f^-.. *< / t«fV

* * , \ S \

* » .

- 3 0 '

v-

1 P5'

LOCATION MAP OF HEAVY MINERAL SAMPLES

IN NORTHWESTERN LUZON

FIG. 4 S E C T I O N 12 I mm

n^^^^ngmm

i? rw l??°Oii

B/H*L/ / / I :V C tf/I A'TV £ L

( SECTI IN 1

30'

Aparri

HUJOP

lh M 7 4 - ; .'3 7 4 .

3J74-4 • y C U ^ g n .» "B

f "'4 • ; ;

C A G \ Y A \ P R O / I \ C f

y> - 4 - *

i . t 'CD

• • . .

15" 30

SCAFF II 2 5 0 , 0 0 0 10

Palaui

Island

>Sonto Cruz * • 4475-5

3475-6

> # 14,'4-*

• ; t ' 4 - 4

3475-8 ' • ' " ' ) •

""%..^.>fr 3475- i

' ^ 3 4 7 5 - 4

»3475- i

?4 75-.

"- " " ' , ' - « A

/ /

/

p ) :

, ' / » • .

i:> o ,

c:i

PHILIPPINE ISLANDS

INDEX MAP

— • • • • ' • • . . . . ^ • - . -

| S E C T I O N 2

30' 45'

SCAI.I" i: 2 5 0 , 0 0 0 10 \b

30'

>

/v \&-

• r> \ \

«a

• A-o <C

, J / •7/ ( ' ( " • ' ,

V 6 v-'

PHILIPPINE ISLANDS

INDEX WAP

is" CO

CO

o O0'

4b\

^4-5 xi 74 -?

Sto Nine

—Bcjaoo J373->

\

,13 7 3 - 3

oo

\

30'

\

\

>

4 3.373-1

r 3372-5

j0GUEGAR*AQ ^ e n o b l o n c o

/ - ' 3 3 7 * - 3

'V CAGAYA\ PNOV t \ C F _ I S~A B E T " A ~ 1p R oVl \ C~f

Santo MtfrTo/

| 3 *72 -i,

; • • * /

°>

„4,oboaon

SontoTowol1

I X '•\V,Tl-\

<! Tl

ft!

ir» X

T3

: \

t*

ft

<

Ad 4-

13 I8°00'

£

13

13

45

£

m

30'

d i N y.

lb

Qjezon

\ i

\ V 7 ; -' -" •

i

537'

u i f - "

1 " T •

Mogsoysoyv

3? 7> -!•:

Tamojini

*

^•71-7

.3771-6

ILAGA^

Roxasi

-A

Gomu* 2371-1

•7°U'T Murora "S_

Reina Mercedes >?37C-!

San Mnoanc . • 34-

C/>

/

7 70 3

:£oDatjon Cauayan * 3 7 7 L - 2 ^

o

4'V

Sonfwg^ * •

Alicio

- ECKtyut

Angndonon

M

0

Cft

J

* ^ .

tn

> \ - i

to

. . w— lj..lj1.iHjus..i4«Lii£iJ'j .^ c.'ffifiaS

15

01

m

& i roo*

an

• kU

" \

^ 3 3 6 9 - 1 O \

X ( *

Jcifes

Sogudoy ^ \

•3369-4

\ O \

Aglipay

3 3C-J ?

^ "N

-on Agij^t.T

V

?369-3

^ \ vt ' O' c^

/

/

/

/

/

Sodden.

/ <S,

' *>

/v o < ^

, ' 'o s

,'V-

A*°

/ V"

» 5 \ 0 K *

5 ^ N 0

( 'O f f

16° 00' ,W 45'

S E C T I O N 10 l??"oo'

V

r

r

> -

LEGEND

.OCATION OF HEAVY 1

3 3 6 9 - 3 FIRST Fv-UR DIGITS COi

NATIONAL TOPOGRAPH :

FOLLOWING DIGIT iS) A-* i

NUMBER OF SAMPLES '<

i2O*O0' 30' IZI'OO'

/ ~ w — 3 0 ' - <• 7I75 3 ? . ' r V r - .

1 f. •

i. Coslguron

\>-C

18*00'

3 0 ' -

I

>0A

, , " 0 <<•

•<in ;Ui< f<'<.

U J CO

2 * 3 v j ^ i ^ J

. y 8 -.iL*>>i/ . V . B

,6*00' - ' 30' 121*00

IMDEX Vl\

LOCAIION 1 HEAVY MINER./

IN N0RTHEAS1

FIG

> ~

3369-3

LEGEND

LOCATION OF HEAVY MINERALS

FIRST F^UR DIGITS CORRESPOND TO

NATIONAL TOPOGRAPHIC NUMBER SYSTEM,

FOLLOWING DIGITUS) ARE CHRONOLOGICAL

NUMBER OF SAMPLES.

30'

I

120*00' 30' 121*00' 30' 122*00' I r • i i - T

30'U

) 3 ' ?4 34

18*00'

30'-

i7*00'

I i

iOfi )

( 3w'2

ior, $,; v

i27:

i^rc

3 0 ' - 2969 y)«59 i^9 3_S9

i6*00' -iJ>3«

^ 4 7

?^ '3 ;-'4/*3

33 C 347;

30'

H »*oo'

*30'

HI : 4A \

3V0'

3 7 r y 346

30' 121*00 30'

INDEX MAP

3368 - 3 4 6 8

17*00'

3 0 '

122*00' —J 16*00'

15'

LOCATION MAP OF HEAVY MINERAL SAMPLES

IN NORTHEASTERN LUZON

FIG 5 S E C T I O N 12

i5'' 15' 30' 45'

SCALE I 250,000

*

LEGEND

0 7 • -

BACKGROUND VALL'F

THRESHOLD VALUE

NUMBER OF SAMF._EC

;R«V;M AMOfviALOUS A^E \ i

BANGUI BAY

S E C T I O N 1 | ^ R oi LAO AG

~ ' Sari Nicolas °-§

I axe ' i Paoar

I; '

/0.4 \ Dinars

V v < y *-M

«KSfie*a . * . ,isw9«*»;*awi ,»»

12 POO' 15'

S E C T I O N 2 % BABUYAN CHAN.

Macabunggao

i.2

0.4 tf4P <

oEngongs v N

* i

r

>/>

30" 121*30* 45'

BABUYAN CHANNEL

oEngongs

- 3 0

JO

45'

^

CD

CAdUGAO BAY

U

/ ; •

0.7 • 14

0.4

^0.2

" / 0.5

0.5

/

0.2 \ .WW - \ > V

/ /

/

/

'+•? "^\ ( 1!T

.3 AQ3

K 1-4 y

:Nueva Era '<£, 1

A /

<*7

>

v 2 . 0 •,»' - ^

0.4 O . l " 3

0.2 . . . S "

La Paz

z' ?.5

6 *

/

uu

' , 0.2

/ , V^OAM. Q

i

02 2.0 0 . 2 ^ ' - . d

. 3.0 '

BANGUED f

01.0 2^arr ^

0.4 . ^ , , . . 3

J V ^ '

'2.0 :

i / ;.4 \

0.-5

"•.4 -' O i

r 0.3

:o.3 1*

\ ( , fJorvocan * T

''rrCr*"" V,

sS Kobugoo

*\

(/ r : c

/£

\

o Roncneria /

/

/ RizoL

.,-*; 4-

\ / \

^ - ' \ \

\ /

/ ""O.V /

_•*" - ~ - * " . ,

Ul

- \

o' a

\ y

icjon \

V*

\ . \2 \

\ \ I

J

J

vio"1

.'*"

,/ H u c i o c * < " • '

S E C T I O N 5 |

' » m i ff' set

J

sS

c Roncnerio

<£•'

CO .d.

\

-1 z> - \

ct1, 0-

/ '

^) -Kobugoo

~\ • v

\'S-y —\

t >

~-"X ~/cy^

^ I8°00

f /

^

w A

v.. A \

1 J

Rizol _

-a

r

yj /L--

-v:> \

fr* • v

\ -a\C° ' ^ *v

/

^~~'-~.

y

^ , 0 V

/ / i ^ - — , „

30

bTobuk

<_> LU CO

-i. " into Man ?

O 3 "rsnl iQQ"

i r

UU

Ss ^

^

c V

N

0.3

•0.3'J, Gregoriodel Pilar

' * / *«

r""~"~ 0.6

n .4

o | 0 2 f

/

\

<% O'

o /

z l > o 1

a 4 3cY' \S o.4^K f ? 0.4 ^ t ^

J.5 f_,0.4 ^ 0.4 /

\

CO

»o.,'

rs1 ' • i

' ^ /

I s ^ l.'.'b ^0""

V

I /

£ 9 / O '

o 1^ Q*< 30NT0C

£_ OF K A L l N ^ - v i U N T A l N P R V M *

HO

\

o

> o 1

a: a

V

• C.4

(P'io>

J/: \

/

/

#0.4

)

X

/

NO

\ S E C T I O N 8

\ v.

>

- 7 ' "4/"'

0 4 , -c/

0.2

0.4

) • 0.4

V>AGAWE 'A

• i.

o.i

-s *• I Jb ingon

^

.^ /V 15

0.3 ^ OF

^

NTOC

NO

I7°00

• 0.4

^ ^AGAWE # i .

0.4

• I.

0.3

/

S X

o \

CO

45

S.I

/

^ < ^ - ' SAINTFERNANDC

Os^. .... V * , .

' o Bcuong

\ 0 9 u ' / / r

"v * >

> > V r ^ -v

C > -3 <*

'V

\ r

. * * ^ - <•'

2.4

v

1-2 y $ ~ - - - - • - • ' La Trinidad

BAGUIQ'

0>

K*-, / & •

«•-? _ I!

i.O * i

_-y 0-4 • 2.3 / •

C4 •'_•< °T- v ;>/ 5.0 • A \ I C

'* - V* j -V°\( * • I

^

v. . ^

r^>

/ . / / V G / l / f \ G Jl I

\—- ~ -

, * f "

• t

R0X

' ' * ] V -n OF • p A N G ^ S I N A N ! '

*'/San Fobion'

'• "A* iU r>i ,

^ Binolunon SGD Mon jei / ' « San''JiCOio«

' M ' j t i . ,

S E C T I O N 10 45

••iCCICH

N'jiividod

URANIUM DISTRI NORTHWESTEI

J

FIG. (i

) V l N c > -

I

URANIUM DISTRIBUTION MAP

NORTHWESTERN LUZON FIG. 6

1 S E C T I t t M 12

B A BUY AM CHANNEL

SECTI IH 1

^CamoioniuQOO

• // /

-•/ y

- • 1 *uOHO

A x

s / r Sohto Teresitao.5

0.3

• iiy: OAf&prizigo

\

VWEMP-

w0mmim

SCALE 11250,000

) Poiaui I

risiandf

i - ' < ^Spnta Cruz

; • , .0 .5

/

0.2

'0.2

,?0.5

0.4

V ,

c_.

V ^tBHwofi^

* S E C T I O N 2 •^Si&fi&i S< * * ' * " ^ * J ^ P ^ M M ^ ^ r 4 B t o W « M * J l ^ * « « * - « ' ~

.A / .

^

B.-V ft^wjPtjSP-^1:" '' "*%

SCALE i! 250,000 15 km

m

$

I cr>

„f

.A _ . ^ £ * I ? J ! _.eRoyj_Nc_E_ j _

' - - - / IS A~B E J , A P R OVIN C E

{ / 1 S f" . . / \ff A V Son to Mono*

^xSfti v^n

..,/ >

v Sonto Tomo

< 7 r 4

V } .

5 .»

A, fV-^

tlj WY-K

k' TAX

''It '

y

•1 \ d

<H

ir>

^3

/

-ii*: '•£•

IK

A - I i

to 13

( .

3

I f* y

» -fi4vt t> , r?

ft

ie*-oo

^

*

3

^

t i l

j°Fmy*'

J M - V i

w ' /

%' \ T / „Quezon 1 ' to'

***»£ I f )

0.5 J*-'

".V X

" J j

•'•—,

1Nf .,*,.>* V

• • * • * ,

K

1-7 \ r .*\

\ i 0 '

• - / Rpxos .,•

"'DC

r '.

.' C.4

Cobatuon

fteina.Meiti&aez i

* *

/ -CUjayan *

f .

f J

O W

/

;4'cia * . ,/ ' n .-•S

Angadonon I L

2 > , V %

••jNfc*

... Echjg/ > ;•

/ 1 \ / <

-.//'-5C, V

y .

/^/ A

4 - b . . / A <

' . ! - .

" ^ B ~

.ST^.

\>

1 .'

"S.

1, -t o N

j \ \

CD

t*5

CO

\ / '

f—O . /

^

/ ._r>

X

r.\ <

>

LEGEND

.OCATION OF 'JTJ-

HWW.UM corjf?-

.€

n '/"' ,-Z^f _/ ~—--,-y /

;/K~ \ ' \ / 1 v.. f V ; \

^ T\ /iff l.r \ .. \

'--,1/ £- 1 r JV \

05

t*3

%

tr\ . - - ' • .' \ jr- ^ „ — _

A . - • J ~ ~ ~ ~ ^ ~ ~ - ^'"f-\ * • . »

" : . / \ r- I

•." \ \

CO

A

( •

r-.y

!

V /

~r-sT S"

J M< ' 07

LECtAD

„OCATI0N OF STREAM SEDIMENT

URANIUM CONTENT ,IN. ppm.

s v^ -A

\ ^

"A

J

^ . 6

J

< ?.~ "I

> > I A - , • • ' " - - • - '

• v '" \

s .>> • ";:i s

Scgjdcy

OA

UJ

i* - ' . ' v i .

Cape S-i"

••/?

r- > i~-\

v i

~—\J

m '• i /

y yy/ • -Ai /

A. A I /

V- ) \ s • /

/ f X'

9* ^Cosigyron y

y

J» . / ^

llilf-t.'.ni,

<s>

NO NOT DETECTED

bACKGRO JMD /ALUE

frtRESHCD VALUE

0.5

2.8

M jMBEfc OF SAMPLES - 413

L i — I

PHILIPPINE ISLANDS

INDEX MAP

URANIUM WSTRII NORTHEASTER

MQ - WJ DETECTED

yACKGRO JND 7ALUE " 0.5 ppm U

THRESHOLD VALUE - 2.8 ppm U

UJM6ER OF SAMPLES 413

/ •:_,S\ *J\

i

**'" 'w f " '.

V

^ r l ;

•

5 / . . . ->

••• '- , / . ' / i v

*» .v ' \

- \

•:S V PHILIPPINE ISLANDS

INDEX MAP

URANIUM DISTRIBUTION MAP NORTHEASTERN LUZON

F I ^ ' 7 I SECTIIN 12

reodnnaissmce gedchmicfll survey of heavy kenewls …

Documents