General Information |
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A variety or type of: | Axinite |
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Other Names/Trade Names: | |
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Chemical Formula | Gemdat.org, Management Team (2012) |
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Physical Properties of Manganaxinite |
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Mohs Hardness | 6.5 to 7Anthony et al, Handbook of Mineralogy (2001) |
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Specific Gravity | 3.314Anthony et al, Handbook of Mineralogy (2001) |
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Tenacity | BrittleAnthony et al, Handbook of Mineralogy (2001) |
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Cleavage Quality | GoodAnthony et al, Handbook of Mineralogy (2001) |
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Fracture | Uneven,ConchoidalAnthony et al, Handbook of Mineralogy (2001) |
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Optical Properties of Manganaxinite |
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Refractive Index | 1.678 to 1.692Anthony et al, Handbook of Mineralogy (2001) |
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Optical Character | Biaxial/-Anthony et al, Handbook of Mineralogy (2001) |
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Colour |
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Colour (General) | Honey-yellow, clove-brown, brown, blue; colorless to pale brown or blue in thin section.Anthony et al, Handbook of Mineralogy (2001) |
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Transparency | Transparent,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 (Short Wave UV) | Magenta-redAnthony et al, Handbook of Mineralogy (2001) |
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Crystallography of Manganaxinite |
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Crystal System | TriclinicAnthony et al, Handbook of Mineralogy (2001) |
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Habit | Crystals typically flattened, axe-head shaped, to 10 cm; granular, massive.Anthony et al, Handbook of Mineralogy (2001) |
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Geological Environment |
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Where found: | Typically a mineral formed by contact metamorphism and boron metasomatism; from a pegmatite vein cutting metamorphosed iron formation at a contact with gabbro (Minnesota, USA).Anthony et al, Handbook of Mineralogy (2001) |
Further Information |
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Mineral information: | Manganaxinite information at mindat.org |
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Significant Gem Localities |
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