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2. Chalcopyrite
- CuFeS2- ore of copper, iron
- metallic luster/ H<glass/ no cleavage
- tarnished brassy yellow (greenish); uneven fracture
- green black streak
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3. Magnetite
- FeO3- iron
- Submetallic/nonmetallic luster
- H>glass/no cleavage
- black; submetallic, almost vitreous luster; uneven fracture
- black streak
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5. Pyrite
- FeS2- iron
- metallic luster/ H>glass/ no cleavage
- brass yellow; cubic crystals common; uneven fracture
- black streak
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6. Sphalerite
- ZnS- ore of zinc
- nonmetallic/ submetallic luster
- H<glass/ cleavage
- yellowish brown; resinous luster; 6-way cleavage
- white to yellow
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7. Hematite
- Fe2O3- lead
- metallic/nonmetallic/submetallic luster
- H>glass/ no cleavage
- steel grey to red-brown; metallic to earthy luster; uneven fracture
- red-brown streak
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8. Galena
- PbS- copper
- metallic luster/ H<glass/ cleavage
- blue-grey; 3-way cubic cleavage; heavy
- dark grey streak
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9. Malachite
- Cu2(OH2)(CO3)2- copper
- nonmetallic/ submetallic luster
- H<glass/ no cleavage
- green; vitreous to earthy luster; conchoidal fracture; found with azurite
- green streak
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10. Azurite
- Cu3(OH2)(CO3)2-copper
- nonmetallic/ submetallic luster
- H<glass/ no cleavage
- blue; vitreous to earthy luster; uneven fracture; found with malachite
- blue streak
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11. Bauxite
- hydrated Al oxides- aluminum
- nonmetallic/ submetallic luster
- H<glass/ no cleavage
- tan to brownish red; earthy luster; small, spherical masses
- variable streak
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12. Copper
- Cu- copper
- metallic luster/H<glass/ no cleavage
- copper red brown, tarnishes green; uneven fracture; globular sheets
- metallic brown streak
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14. Pyrophyite
- refactory
- non-metals/ H<glass/ cleavage
- white to greyish white; pearly to dull luster; needlelike radiating crystals; 1-way cleavage
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15. Quartz
- glass, computer chips
- non metal/ H>glass/ no cleavage
- clear to varied colors; vitreous
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16. Calcite
- cement
- nonmetals/ H<glass/ cleavage
- reacts with HCL
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17. Gypsum
- fertilizer, plaster of paris, cement
- nonmetals/ H<glass/ cleavage
- white, pink or clear; vitreous, silky, or earthy luster; 1-way cleavage or uneven fracture
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18. Talc
- cosemetics, filler, soap
- nonmentals/ H<glass/ cleavage
- white to green; pearly to greasy or waxy luster; greasy or slick feel; 1-way cleavage
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19. Sulfur
- fertilizer, explosives
- nonmetals/ H<glass/ no cleavage
- yellow uneven fracture; adamantine to dull luster
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20. Felspar
- ceramics
- nonmetals/ H>glass/ cleavage
- whie, pink, or grey; vitreous to dull luster; 2-way luster; 2-way cleavage at right angles
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21. Garnet
- abrasive
- nonmetal/ H>glass/ non cleavage
- usually red; vitreous; 12-sided crystals (appear spherical)
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22. Fluorite
- flux in aluminum production
- nonmetals/ H<glass/ cleavage
- clear, purple, reddish, green; 4-way cleavage; vitreous to greasy luster
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23. Halite
- salt
- nonmetals/ H<glass/ cleavage
- clear to grey; 3-way cubic cleavage; vitreous; salty taste
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25. Graphite
- pencils, lubricant
- nonmetals/ H<glass/ cleavage
- black to metallic grey; 1-ways cleavage; submetallic luster; greasy feel
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28. Kyanite
- refactory, spark plugs
- nonmetals/ H<glass and H>glass
- blue; elongated, columnar crystals; vitreous to pearly luster; 2-way cleavage
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29. Apatite
- fertilizer
- nonmetals/ H<glass/ no cleavage
- green to yellow and reddish; vitreous, silky, or earthy luster; 1-way cleavage or uneven fracture
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