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Mohs hardness of natrojarosite

Input interpretation

natrojarosite (mineral) | Mohs hardness
natrojarosite (mineral) | Mohs hardness

Result

3
3

Hardness comparisons

harder than a fingernail (Mohs 2.5)
harder than a fingernail (Mohs 2.5)
softer than a copper penny (Mohs 3.5)
softer than a copper penny (Mohs 3.5)

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