| General Information |
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| Varieties/Types: | |
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| Chemical Formula | Michael O’Donoghue, Gems, Sixth Edition (2006) More from other references |
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| Physical Properties of Axinite |
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| Mohs Hardness | 6.5 to 7Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Specific Gravity | 3.18 to 3.32Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Tenacity | BrittleHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Cleavage Quality | DistinctUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Fracture | ConchoidalArthur Thomas, Gemstones (2009) |
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| Optical Properties of Axinite |
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| Refractive Index | 1.656 to 1.695Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Optical Character | Biaxial/-Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Birefringence | 0.009 to 0.012Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Pleochroism | Strong: brown, yellow, green, reddish-brown -- violet, yellow, blue -- colourless-yellowish, grayUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Dispersion | StrongArthur Thomas, Gemstones (2009) |
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| Colour |
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| Colour (General) | Brown, green, yellowish-green, bluish-green, blueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Causes of Colour | Blue, V3+ in octahedral coordinationW. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011) |
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| Transparency | TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Lustre | VitreousArthur Thomas, Gemstones (2009) |
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| Fluorescence & other light emissions |
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| Fluorescence (Short Wave UV) | Inert to orangy-red - deep red (yellowish stones)Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Fluorescence (Long-Wave UV) | Orange-redUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Crystallography of Axinite |
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| Crystal System | TriclinicHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Habit | Crystals are characteristically wedge- or axe-shaped.Michael O’Donoghue, Gems, Sixth Edition (2006) More from other references |
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| Inclusions in Axinite |
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| Goethite fibres - Gemmological Tables, Ulrich Henn and Claudio C. Milisenda, 2004, p 18 |
| Further Information |
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| Mineral information: | Axinite information at mindat.org |
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