Bukovite | |
Category: | Selenide – Bukovite group |
Formula: | Tl2(CuFe)4Se4 |
Imasymbol: | Bko[1] |
Strunz: | 2.BD.30 |
Dana: | 2.5.5.2 |
System: | Tetragonal |
Class: | Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m) |
Symmetry: | I4/mmm |
Unit Cell: | V = 216.58 Å3 |
Color: | Grayish-brown |
Cleavage: | Distinct/good: Good on imperfect on |
Mohs: | 2 |
Luster: | Metallic |
Diaphaneity: | Opaque |
Gravity: | 7.40 (calculated) |
References: | [2] [3] |
Bukovite is a rare selenide mineral with formula Tl2Cu3FeSe4. It is a brown to black metallic mineral which crystallizes in the tetragonal system.[2]
It was first described in 1971 for an occurrence in the Bukov uranium mine, Rožná deposit, Vysočina Region, Moravia, Czech Republic.[3] 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.[2]