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Cassiterite
Cassiterite - Mineral Properties and Uses |
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Uses |
Cassiterite uses include: ore of tin. |
Color |
brown, black, reddish brown, brownish black |
Streak |
colorless |
Luster |
adamantine, splendent to submetallic |
Diaphaneity |
opaque to translucent |
Cleavage |
imperfect |
Hardness |
6.0 - 7 |
Specific Gravity |
6.8 - 7.1 |
Distinguishing Characteristics |
high specific gravity, luster, streak, fibrous appearance |
Crystal System |
tetragonal |
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Cassiterite from Plateau State, Nigeria, Africa.
These specimens are granular size.
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Cassiterite from near Keystone, South Dakota.
Specimen is approximately 4 inches (10 centimeters) across.
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Stream Tin, a variety of cassiterite from Tinton, South Dakota.
Specimens are approximately 1/8 inch to 3/8 inch (.3 centimeter to .95 centimeter) across.
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Mineral photographs that appear on this page with a Geology.com copyright mark are property of Geology.com and may not be used beyond our website. If you like these photos and would like to share them with others please link to this page or email its URL. The photos were taken and composed by Ann Bryant.
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