Crookesite

Facts

Chemical formula

Cu₇TlSe₄

Crystal system

Tetragonal

Elements in formula

Copper, Thallium, Selenium

Number of elements

3

IMA status

Grandfathered

Type locality

Skrikerum mine

Named after

William Crookes

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q430083