# Teallite

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Teallite General Category Sulfide minerals Formula 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 = 4.26 Å, 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 scale hardness 1+1⁄2 – 2 Luster Metallic Streak Black Diaphaneity Opaque Specific gravity 6.36 Optical properties Anisotropic Pleochroism Weak References [2][3]

**Teallite** is a [sulfide](/source/Sulfide) mineral of [tin](/source/Tin) and [lead](/source/Lead) with chemical formula: [Pb](/source/Lead)[Sn](/source/Tin)[S](/source/Sulfur)2. It occurs in hydrothermal veins and is sometimes mined as an [ore](/source/Ore) of tin. Teallite forms soft silvery grey mica-like plates and crystallizes in the [orthorhombic](/source/Orthorhombic) system. The [Mohs hardness](/source/Mohs_hardness) is 1.5 to 2 and the [specific gravity](/source/Specific_gravity) is 6.4.

Teallite was first described in 1904 from its [type locality](/source/Type_locality_(geology)) in Santa Rosa, Antequera, [Bolivia](/source/Bolivia). It was named for the British [geologist](/source/Geologist) [Jethro Justinian Harris Teall](/source/Jethro_Justinian_Harris_Teall) (1849–1924).[4]

## See also

- [Earth sciences portal](https://en.wikipedia.org/wiki/Portal:Earth_sciences)

- [Classification of minerals](/source/Classification_of_minerals_(disambiguation))

- [List of minerals](/source/List_of_minerals)

- [List of minerals named after people](/source/List_of_minerals_named_after_people)

## References

1. **[^](#cite_ref-1)** Warr, L.N. (2021). ["IMA–CNMNC approved mineral symbols"](https://doi.org/10.1180%2Fmgm.2021.43). *Mineralogical Magazine*. **85** (3): 291–320. [Bibcode](/source/Bibcode_(identifier)):[2021MinM...85..291W](https://ui.adsabs.harvard.edu/abs/2021MinM...85..291W). [doi](/source/Doi_(identifier)):[10.1180/mgm.2021.43](https://doi.org/10.1180%2Fmgm.2021.43). [S2CID](/source/S2CID_(identifier)) [235729616](https://api.semanticscholar.org/CorpusID:235729616).

1. **[^](#cite_ref-2)** [Mineralienatlas](https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Teallite)

1. **[^](#cite_ref-3)** [Mindat with location data](http://www.mindat.org/min-3900.html)

1. **[^](#cite_ref-4)** [Webmineral site](http://webmineral.com/data/Teallite.shtml)

## External links

Media related to [Teallite](https://commons.wikimedia.org/wiki/Category:Teallite) at Wikimedia Commons

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