Term
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Definition
Flourite
This is not an ore
H = 4
C = 4
Non-metallic luster
White to purple in color
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Term
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Definition
Galena
Lead ore
H = 2.5
C = 3
Metallic luster
Very heavy
Glittery
Streak - black
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Term
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Definition
Magnetite
Iron ore
H > 5.5
Metallic luster
Magnetic
Somewhat glittery
Streak - black
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Term
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Definition
Pyrite
Iron ore
H > 5.5
Cubic crystals common
Metallic luster
"Fool's gold"
Streak - greenish-black
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Term
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Definition
Hematite
Iron ore
H = 5 (usually)
C = 0 ?
Non-metallic to semi-metallic luster
Streak - reddish-brown
Reddish in color
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Term
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Definition
Graphite
Not an ore
H = 1
Greasy feel
Metallic luster
Writes on paper
Dark grey in color
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Term
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Definition
Hematite
Iron ore
H < 5.5
Semi-metallic to metallic luster
Streak red-brown
Grey in color and very glittery
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Term
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Definition
Malachite
Copper ore
Soft
Green color or
Non-metallic luster
Azurite
Copper ore
Soft
Blue color
Non-metallic luster
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Term
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Definition
Chalcopyrite
Copper ore
H < 5.5 (softer than Pyrite)
C = 0
Metallic luster
Streak - green-black
Tarnished colored
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Term
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Definition
Sphalerite
Zinc ore
C = 6
Non-metallic luster
Very glittery
Streak - Always yellow
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Term
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Definition
Copper
Copper ore
H < 5.5
Metallic luster
Tarnished red or green like a penny
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