Teallite
| Teallite | |
|---|---|
 | |
| General | |
| Category | Sulfide minerals |
| Formula (repeating unit) | PbSnS2 |
| IMA symbol | Tel[1] |
| Strunz classification | 2.CD.05 |
| Crystal system | Orthorhombic |
| Crystal class | Dipyramidal (mmm) H-M symbol:(2/m 2/m 2/m) |
| Space group | Pbnm(no. 62) |
| Unit cell | a = 4.26Å,b = 11.41 Å c = 4.09 Å; Z = 2 |
| Identification | |
| Color | Silvery gray, lead-gray to iron-gray; tarnishes dull or iridescent |
| Cleavage | {001} perfect (lamellar cleavage); flexible |
| Tenacity | Malleable |
| Mohs scalehardness | 1+1⁄2– 2 |
| Luster | Metallic |
| Streak | Black |
| Diaphaneity | Opaque |
| Specific gravity | 6.36 |
| Optical properties | Anisotropic |
| Pleochroism | Weak |
| References | [2][3] |
Tealliteis asulfidemineral oftinandleadwith chemical formula:PbSnS2.It occurs in hydrothermal veins and is sometimes mined as anoreof tin. Teallite forms soft silvery grey mica-like plates and crystallizes in theorthorhombicsystem. TheMohs hardnessis 1.5 to 2 and thespecific gravityis 6.4.
Teallite was first described in 1904 from itstype localityin Santa Rosa, Antequera,Bolivia.It was named for the BritishgeologistJethro Justinian Harris Teall(1849–1924).[4]
See also
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References
[edit]- ^Warr, L.N. (2021)."IMA–CNMNC approved mineral symbols".Mineralogical Magazine.85(3): 291–320.Bibcode:2021MinM...85..291W.doi:10.1180/mgm.2021.43.S2CID235729616.
- ^Mineralienatlas
- ^Mindat with location data
- ^Webmineral site
External links
[edit]
Media related toTealliteat Wikimedia Commons
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