5-Earth Science-Mineral-Properties-Hardness

hardness of rock

Rocks have relative strength {hardness}|, depending on chemical-bonding patterns.

Moh scale

Hardness scale {Moh's scale} {Moh scale} goes from 1 to 10. Diamond is 10. Cubic boron nitride is 9.5. Corundum is 9. Quartz is 7. Glass is 6. Steel is 5. Fluorite is 4. Calcite is 3. Salt is 2. Talc is 1.

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5-Earth Science-Mineral-Properties

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Date Modified: 2022.0225