Papagoite
Papagoite is named after the Papago, the early inhabitants of the area around Ajo, Pima County, Arizona, USA, the discovery locality.
Papagoite forms crystalline coatings and aggregates of cerulean blue colour. Crystals are often too small to be fashioned.
| General Information |
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| Chemical Formula | Michael O’Donoghue, Gems, Sixth Edition (2006) |
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| Physical Properties of Papagoite |
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| Mohs Hardness | 5 to 5.5Michael O’Donoghue, Gems, Sixth Edition (2006) |
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| Specific Gravity | 3.25Michael O’Donoghue, Gems, Sixth Edition (2006) |
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| Cleavage Quality | DistinctAnthony et al, Handbook of Mineralogy (2001) |
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| Optical Properties of Papagoite |
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| Refractive Index | 1.607 to 1.672Michael O’Donoghue, Gems, Sixth Edition (2006) |
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| Optical Character | Biaxial/-Michael O’Donoghue, Gems, Sixth Edition (2006) |
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| Birefringence | 0.065Michael O’Donoghue, Gems, Sixth Edition (2006) |
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| Pleochroism | Colorless to very pale greenish blue - blue - deep greenish blue.Anthony et al, Handbook of Mineralogy (2001) |
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| Dispersion | Very faintAnthony et al, Handbook of Mineralogy (2001) |
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| Colour |
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| Colour (General) | Cerulean blueMichael O’Donoghue, Gems, Sixth Edition (2006) |
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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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| Crystallography of Papagoite |
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| Crystal System | MonoclinicMichael O’Donoghue, Gems, Sixth Edition (2006) |
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| Habit | Crystalline coatings and aggregatesMichael O’Donoghue, Gems, Sixth Edition (2006) More from other references |
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| Geological Environment |
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| Where found: | Papagoite is often mixed with quartz and occurs in narrow veinlets in altered granodiorite porphyryMichael O’Donoghue, Gems, Sixth Edition (2006) More from other references |
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| Further Information |
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| Mineral information: | Papagoite information at mindat.org |
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| Significant Gem Localities |
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| USA | | |
| Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 434 |
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