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: Pyrite is much harder than gold, rating 6 to 6.5 on the Mohs scale . It is brittle and will shatter if struck, whereas gold is soft and will indent.
Pyrite forms in a wide variety of environments, including igneous, metamorphic, and sedimentary rocks. The Many Faces of Fool's Gold | American Scientist Fools Gold
: When scraped against unglazed porcelain, pyrite leaves a greenish-black streak , while real gold leaves a golden-yellow streak . : Pyrite is much harder than gold, rating 6 to 6