Bukovite
Bukovite is a rare selenide mineral with formula Tl2Cu3FeSe4. It is a brown to black metallic mineral which crystallizes in the tetragonal system.[1]
| 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 |
| Luster | metallic |
| Diaphaneity | opaque |
| Specific gravity | 7.40 (calculated) |
| References | [1][2] |
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
References
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