Physical Properties
FeS2
Hardness = 6 - 6.5;
Cleavage: none; brittle fracture
Crystals: cubes, with parallel striations
on faces; massive forms common
Color: pale yellow to brass-yellow
Streak: greenish black
Luster: metallic, shiny, often tarnished
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Description
A massive pyrite chunk showing no crystal shapes. Pyrite often is found this way and must be identified on its color, streak, and hardness.
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