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FLUORITE #5 Go on to: #1 | #2 | #3 | #4 Fluorite 
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Physical Properties
CaF2
Hardness = 4; Cleavage: octahedral; perfect in 4 directions; Shape: octahedral, but often cleavage masses or masses of intergrown crystals masses Color: violet, blue, green, yellow, brown, bluish, black, pink, rose-red, colorless Luster: vitreous (glassy) |
Description
At first this massive green variety of fluorite might be confused with something like apatite, or olivine. Hardness would help with olivine (6.5-7), but not apatite (4). But look more carefully, especially on the left side of the specimen, and you can see some cleavages passing through; they are octahedral, and diagnostic of the fluorite.
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