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25 Cards in this Set
- Front
- Back
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CALCITE Non-Metallic Hardness: 3, may be less No Cleavage Streak: White Effervesces in cold dilute HCl |
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GALENA Metallic Hardness: 2.5 Cleavage Streak: Black,green-black or dark green |
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HORNBLENDE Non-Metallic Hardness: 5.0-6.0 Cleavage Streak: White to Gray 6-sided crystals common |
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GRAPHITE Metallic Hardness: 1.0 Cleavage Streak: Black Greasy feel, smudges fingers when handled |
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APATITE Non-Metallic Hardness: 5.0 No Cleavage Streak: White Crystals common |
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HALITE Non-Metallic Hardness: 2.5 Cleavage Streak: White Table salt taste |
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FLUORITE Non-Metallic Hardness: 4.0 Cleavage Streak: White |
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PYRITE Metallic Hardness: 6.0-6.5 No Cleavage Streak: Greenish or brownish black "Fools gold" |
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MAGNETITE Metallic Hardness: 5.5-6.0 No Cleavage Streak: Black Strongly magnetic |
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PLAGIOCLASE Non-Metallic Hardness: 6.0-6.5 Cleavage Streak: White May exhibit play of colors on planes of cleavage |
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GARNET Non-Metallic Hardness: 7.0-7.5 No Cleavage Streak: White or color of mineral Fracture may resemble cleavage |
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TALC Non-Metallic Hardness: 1.0 No Cleavage Streak: White Soapy feel |
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GOETHITE Non-Metallic Hardness: 1.0 No Cleavage Streak: brownish-yellow to orange-yellow Earthy masses |
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OLIVINE Non-Metallic Hardness: 6.5-7.0 No Cleavage Streak: white or gray Olive in color, commonly in granular masses |
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CORUNDUM Non-Metallic Hardness: 9.0 No Cleavage Barrel-shaped hexagonal crystals |
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BIOTITE Non-Metallic Hardness: 2.5-3.0 Cleavage Streak: White to Gray Thin sheets of basal cleavage |
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DOLOMITE Non-Metallic Hardness: 3.5-4.0 No Cleavage Streak: White Reacts w/cold dilute HCl only when powdered |
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GYPSUM Non-Metallic Hardness: 2.0 Cleavage Streak: White Crystals common, twinning common |
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HEMATITE Non-Metallic Hardness: 5.0-6.0 but low as 1 No Cleavage Streak: Red Earth appearance |
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FELDSPAR Non-Metallic Hardness: 6.0 Cleavage Streak: White Crystals common, grains have glossy appearance |
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MUSCOVITE Non-Metallic Hardness: 2.5-3.5 Cleavage Streak: White Thin sheets of basal cleavage |
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AUGITE Non-Metallic Hardness: 5.5-6.0 Cleavage Streak: White to Gray May exhibit parting |
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SPHALERITE Non-Metallic Hardness: 3.5-4.0 Cleavage Streak: brown to light yellow or white |
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FLUORITE Non-Metallic Hardness: 4.0 Cleavage Streak: White |
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QUARTZ Non-Metallic Hardness: 7.0 No Cleavage Streak: White Conchoidal fracture |
