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How hard are minerals?
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Different minerals have different degrees of hardness. Talc is the softest mineral; it crumbles in the fingers. Diamond, the hardest mineral, can cut glass. The hardness of a mineral is often used to help identify it. | | Diamond is the hardest mineral on Earth |
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Previous:
Back
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Book:
1001
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Section:
Earth
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Chapter:
Rocks and Minerals
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