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Mohs hardness of ferrocolumbite

Input interpretation

ferrocolumbite (mineral) | Mohs hardness
ferrocolumbite (mineral) | Mohs hardness

Result

6
6

Hardness comparisons

harder than glass (Mohs 5.5)
harder than glass (Mohs 5.5)
softer than unglazed porcelain (Mohs 6.5)
softer than unglazed porcelain (Mohs 6.5)

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