| General Information |
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| A variety or type of: | Chalcedony, which is a variety of Quartz |
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| Chemical Formula | Arthur Thomas, Gemstones (2009) |
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| Physical Properties of Binghamite |
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| Mohs Hardness | 6.5 to 7Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Specific Gravity | 2.55 to 2.70Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Optical Properties of Binghamite |
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| Refractive Index | 1.530 to 1.543Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Optical Character | Uniaxial/+Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Birefringence | 0.003 to 0.009Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Chatoyancy | YesGemdat.org, Management Team (2012) |
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| Colour |
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| Colour (General) | Yellowish to reddishGemdat.org, Management Team (2012) |
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| Transparency | Translucent,OpaqueArthur Thomas, Gemstones (2009) |
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| Lustre | Waxy,ResinousArthur Thomas, Gemstones (2009) |
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| Crystallography of Binghamite |
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| Crystal System | TrigonalUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Habit | Fibrous to grained aggregateUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Inclusions in Binghamite |
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| Dense and parallel fibres of Goethite and/or Hematite |
| Further Information |
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| Mineral information: | Binghamite information at mindat.org |
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| Significant Gem Localities |
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| USA | | |
| Gemstones of the world, W. Schumann, 2001, p. 204 |
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