Bukovite is a rare selenide mineral

Selenide mineral

Selenide minerals are those minerals that have the selenide anion as a main component.Selenides are similar to sulfides and often grouped with them.Examples include:* athabascaite Cu5Se4* clausthalite PbSe* penroseite Se2* stilleite ZnSe...

 with formula Tl₂Cu₃FeSe₄. It is a brown to black metallic mineral which crystallizes in the tetragonal system.

It was first described in 1971 for an occurrence in the Bukov uranium mine, Rožná deposit, Vysočina Region, Moravia

Moravia

Moravia is a historical region in Central Europe in the east of the Czech Republic, and one of the former Czech lands, together with Bohemia and Silesia. It takes its name from the Morava River which rises in the northwest of the region...

, Czech Republic

Czech Republic

The Czech Republic is a landlocked country in Central Europe. The country is bordered by Poland to the northeast, Slovakia to the east, Austria to the south, and Germany to the west and northwest....

. It has also been reported in Skrikerum, near Tryserum, Kalmar, Sweden

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

; near Vernet-la-Varenne, Puy-de-Dˆome, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

; and Tuminico, Sierra de Cacho, La Rioja Province, Argentina

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

.