| General Information |
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| Chemical Formula | Anthony et al, Handbook of mineralogy (2001) |
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| Physical Properties of Hardystonite |
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| Mohs Hardness | 3 to 4Anthony et al, Handbook of mineralogy (2001) |
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| Specific Gravity | 3.396 to 3.443Anthony et al, Handbook of mineralogy (2001) |
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| Tenacity | BrittleAnthony et al, Handbook of mineralogy (2001) |
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| Cleavage Quality | Good,PoorAnthony et al, Handbook of mineralogy (2001) |
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| Optical Properties of Hardystonite |
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| Optical Character | Uniaxial/-Anthony et al, Handbook of mineralogy (2001) |
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| Colour |
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| Colour (General) | White, pinkish, light brown; colorless in thin section.Anthony et al, Handbook of mineralogy (2001) |
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| Transparency | TranslucentAnthony et al, Handbook of mineralogy (2001) |
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| Lustre | VitreousAnthony et al, Handbook of mineralogy (2001) |
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| Fluorescence & other light emissions |
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| Fluorescence (General) | A dull violet fluorescence can be observed in some samples under UV.Anthony et al, Handbook of mineralogy (2001) |
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| Crystallography of Hardystonite |
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| Crystal System | TetragonalAnthony et al, Handbook of mineralogy (2001) |
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| Habit | In coarse, columnar masses; granular and as isolated grains.Anthony et al, Handbook of mineralogy (2001) |
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| Geological Environment |
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| Where found: | In granular ore in a metamorphosed stratiform zinc deposit.Anthony et al, Handbook of mineralogy (2001) |
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| Further Information |
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| Mineral information: | Hardystonite information at mindat.org |
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