classification of minerals possibilities?. chemical composition gold, silver, sulfur native elements...
Post on 16-Dec-2015
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Chemical composition
Gold, Silver, Sulfur
Native elementsAu, Ag, S
SulfidesPyrite, Galena FeS, PbS
Hematite, Magnetite Fe2O3, Fe3O4
Oxides
Silicates Quartz, Mica, Feldspar
SiO2
KAl2(AlSi3O10)(OH,F,Cl)2
KAlSi3O8
Chemical formula:
CChemical formula:
C
Graphite Diamond
How can 2 minerals with the same composition be so different?
Review of Concepts:
1. Minerals can be identified by examining….. Physical Properties, including….
Luster, Hardness, Cleavage, Color, Streak, Density….
2. Minerals are classified according to their….. Chemical Composition, including groups like….
Native Elements, Sulfides, Oxides, and the all important SILICATES
3. The “Basic Building Block” of the Silicate Minerals is…..
Review of Concepts: (continued)
4. The physical properties of minerals are generally controlled by…..Crystalline Structure….
…or the “orderly internal arrangement of the atoms”!
What do graphite and diamond have in common?……
Identical Chemical Composition….
What accounts for the differences between graphite and diamond?
….the “orderly internal arrangement of the atoms!
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