Abramovite
| Abramovite | |
|---|---|
| 240px | |
| General | |
| Category | Sulfides and Sulfosalts |
| Formula (repeating unit) |
Pb2SnInBiS7 |
| Strunz classification | 02.HF.25a (8th edition) |
| Dana classification | 03.01.03.03 |
| Unit cell | a = 23.4 Å, b = 5.77 Å, c = 5.83 Å; α = 89.1°, β = 89.9°, γ = 91.5° |
| Identification | |
| Formula mass | 1,066.44 g/mol |
| Color | Silver gray |
| Crystal habit | Encrustations - Forms crust-like aggregates on matrix |
| Crystal system | Triclinic - Pinacoidal; Space group = P1 |
| Twinning | Lamellar on {100} |
| Cleavage | Perfect on {100} |
| Luster | Metallic |
| Streak | Black |
| Diaphaneity | Opaque |
| References | [1][2][3][4] |
Abramovite is a very rare mineral from the sulfides and sulfosalt categories. It has the chemical formula Pb2SnInBiS7. It occurs as tiny elongated lamellar-shaped crystals, up 1 mm × 0.2 mm in size, and is characterized by its non-commensurate structure.[4]
Etymology and History
Abramovite is named after the mineralogist Dmitry Vadimovich Abramov (born 1963) of the A.E. Fersman Museum, Russia.[1]
It was discovered as fumarole crust on the Kudriavy (Kudryavyi) volcano, Iturup Island, Kuril Islands, Sakhalin Oblast, Far East Region, Russia.[4]
Formation
Abramovite is a product of precipitation from fumarolic gases (600 °C [1,112 °F]) in an active stratovolcano.[1]
References
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- ↑ Mindat.org
- ↑ Webmineral.com Webmineral Data
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