Primera aparición de cernyita (Cu2CdSnS4), un análogo cadmifero de la estannita, en España
- Ascensión Murciego Murciego
- Francisco Javier Gonzalo Corral
- J. Babkine
- Y. Dusausoy
ISSN: 0210-6558
Year of publication: 1992
Volume: 15
Issue: 0
Pages: 107-111
Type: Article
More publications in: Boletín de la Sociedad Española de Mineralogía
Abstract
Cemyite (Cu2CdSnS4), belonging to the group of minerals with structures similar to that of stannite and represented by the general formula A2BCS4 (A=Cu+1, Ag+1; B= Fe2+, Zn2+, Cd2+ and C=Sn4+,In3\ Ge40 has been found for the firts time in Spain, in the Barquilla deposit (Salamanca), thus being its third finding in the world after Tanco (Canadá) and Hugo (USA) mines. It is found both inside pegmatite veins, forming part of a sulphide assemblage constitued by greenockite, tetrahedrite, herzembergite, mohite and chalcopyrite, among others, and in the wall rock close to the veins, accompanied by mohite, tetrahedrite, dominant chalcopyrite, stannoidite, mawsonite and a new compound related to briartite (Cu2(Fe,Zn)GeS4) in which the Fe and Zn are substituted by Cd. Chemical analyses by electron microprobe points to a compositional variety.