Bukovite

Bukovite: metallic grayish-brown grains are noted by the two red dots

General
Category| Selenide – Bukovite group
Formula
(repeating unit)| Tl2(CuFe)4Se4
Strunz classification| 2.BD.30
Dana classification| 2.5.5.2
Crystal system| Tetragonal
Crystal class| Ditetragonal dipyramidal (4/mmm)
H-M symbol: (4/m 2/m 2/m)
Space group| I4/mmm
Unit cell| V = 216.58 Å3
Identification
Color| Grayish-brown
Cleavage| Distinct/good: Good on {001} imperfect on {100}
Mohs scale hardness| 2
|re|er}}| Metallic
Diaphaneity| Opaque
Specific gravity| 7.40 (calculated)
References| [1][2]

Bukovite is a rare selenide mineral with formula Tl2Cu3FeSe4. It is a brown to black metallic mineral which crystallizes in the tetragonal system.[1]

It was first described in 1971 for an occurrence in the Bukov uranium mine, Rožná deposit, Vysočina Region, Moravia, Czech Republic.[2] It has also been reported in Skrikerum, near Tryserum, Kalmar, Sweden; near Vernet-la-Varenne, Puy-de-Dôme, France ; and Tuminico, Sierra de Cacho, La Rioja Province, Argentina .[1]

## See also

* Beraunite

## References

1. ↑ 1.0 1.1 1.2 Handbook of Mineralogy
2. ↑ 2.0 2.1 http://www.mindat.org/min-797.html Mindat
3. ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.

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