Mineral Identification

Mineral Identification - 2Geology Lab25-03-2015MineralsHaematiteBauxiteMicaTalcAsbestosMagnetiteChalcopyrite

HAEMATITEThe color red, in makeup and paint and of course, rust: brought to you by hematite

HAEMATITEHematite is in the red rocks and soils all over the world.

HAEMATITEHematite is popular in North American jewelry.

HAEMATITEHematite is made into IRON and STEEL, the backbone of our society.

HAEMATITEHumans use hematite to make iron for weapons, railroad lines, and skyscrapers

HAEMATITEPropertiesHematites color is grey, but its streak is red. Hema means blood.The mineral was named hematite because it looked like blood when it was taken across a streak plate.

HAEMATITEPropertiesForm ColourLustreStreakCleavageFractureHardness

HAEMATITEPropertiesSpecific GravityTransparencySpecial PropertiesOccurrenceUsesBAUXITEAlmost all of the aluminium that has ever been produced has been made from bauxite.

BAUXITE.

BAUXITESome specimens of bauxite do not have the pisolitic structures. Specimen is approximately 4 inches (10 centimetres) across.Bauxite PropertiesForm ColourLustreStreakCleavageFractureHardness

MICAForm The crystalline structure of mica forms layers that can be split or delaminated into thin sheets usually causingfoliationin rocks.

MICA

MICAFormColourLustreStreakCleavageFractureHardness

MICASpecific GravityTransparencySpecial PropertiesOccurrenceUses

MICA UsesSheet MICA Electrical components, electronics

MICA Uses Hand carved from mica

Human use of mica dates back toprehistorictimes. Mica was known to ancientIndian,Egyptian,GreekandRomanandChinesecivilizations

TALCTalc is known for being the softest mineral on earth. It is number 1 on theMohs hardness scale, and can be easily scratched by a fingernail.A form of talc known as "soapstone" is also widely knownTALC Soap StoneA metamorphic rock that consists primarily of talc with varying amounts of other minerals such as micas, chlorite, amphiboles, pyroxenes and carbonates.

The famous "Christ the Redeemer" statue that the city of Rio, Brazil is made of reinforced concrete and faced with soapstone.

TalcPropertiesForm ColourLustreStreakCleavageFractureHardness

TalcPropertiesSpecific GravityTransparencySpecial PropertiesOccurrenceUses

ASBESTOSAsbestos refers to a naturally occurring fibrous minerals.Asbestos fibres are microscopic in nature, they are extremely durable and resistant to fire and most chemical reactions and breakdowns.Today, asbestos is classified as a known human carcinogen is banned in more than 50 countries.

ASBESTOSFormColourLustreStreakCleavageFractureHardness

ASBESTOSSpecific GravityTransparencySpecial PropertiesOccurrenceUses

MAGNATITEMagnetite is a mineral, one of the three common naturally occurring iron oxides.Magnetiteis a natural magnet, hence the name, giving it a very nice distinguishing characteristic

MAGNATITEForm - Isometric StructureColour - Greyish blackLustre - metallic to dullCleavage - absent Fracture - ConchoidalHardness - 5.5 - 6.5Streak - Black

MAGNATITESpecific Gravity - 4.9-5.2Transparency - OpaqueSpecial Properties - Strong attraction tomagnets,hardness, andstreakOccurrence - Occurs inigneous rockdepositsIn sedimentary banded iron formations.Uses Ore of Iron , Make Iron, Steel and Alloys.

CHALCOPYRITEA major ore of copper.Chalcopyriteis acopperironsulfide mineralthat crystallizes in thetetragonalsystem. It has thechemical formulaCuFeS2.CHALCOPYRITEForm - Massive, TetragonalColour greens, yellows and purplesLustre - MetallicCleavage Poor , IndistinctFracture Conchoidal and BrittleHardness 3.5 - 4Streak - dark green, Greyish Black

34CHALCOPYRITESpecific Gravity - 4.2Transparency - OpaqueSpecial Properties Colour, HardnessOccurrence - Chalcopyrite is present involcanogenic massive sulfide ore depositsandsedimentary exhalative depositsUses Important Source of Copper ore.

Blister Copper