General Information |
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Chemical Formula | Michael O’Donoghue, Gems, Sixth Edition (2006) |
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Photos of natural/un-cut material from mindat.org |
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Physical Properties of Poudretteite |
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Mohs Hardness | 5Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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Specific Gravity | 2.51 to 2.53Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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Optical Properties of Poudretteite |
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Refractive Index | 1.511 to 1.532Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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Optical Character | Uniaxial/+Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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Birefringence | 0.021Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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Pleochroism | Strong: purple-pink/colourless to brownishUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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Colour |
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Colour (General) | Violet, pink, colourlessUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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Transparency | TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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Crystallography of Poudretteite |
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Crystal System | HexagonalUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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Habit | Roughly equant barrel-shaped prismatic crystalsMichael O’Donoghue, Gems, Sixth Edition (2006) |
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Geological Environment |
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Where found: | Poudrettite is found in marble xenoliths
within nepheline syenite breccias in an intrusive alkalic gabbro-syenite complex.Michael O’Donoghue, Gems, Sixth Edition (2006) |
Further Information |
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Mineral information: | Poudretteite information at mindat.org |
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Significant Gem Localities |
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| Canada | |
- La Vallée-du-Richelieu RCM
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 439 | | Myanmar | |
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 439 |
| Ted Themelis (2008) Gems & mines of Mogok |
| Ted Themelis (2008) Gems & mines of Mogok |
- Pein-Pyit (Painpyit; Pyan Pyit)
| Ted Themelis (2008) Gems & mines of Mogok |
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