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The common are is chalcopyrite, a copper sulphide; that is, it is composed of copper and sulphur.
2
Basalt with traces of chalcopyrite.-L.
3
The West Desert deposit consists of coarse-grained sphalerite with minor chalcopyrite occurring in skarn developed in thin-bedded, shaly carbonate rocks near the intrusive complex.
Usage of copper pyrites in anglès
1
Quartz with specular iron ore. Greenstone, with chalcedony and copperpyrites.
2
One piece must contain copperpyrites and the other zincites.
3
But since about 1860 sulphuric acid has been more largely made from iron or copperpyrites.
4
Quartz, containing disseminated hematitic iron-ore and copperpyrites.
5
Thallium is a rare metal, found in small quantities in some varieties of iron and copperpyrites, and in some lithia micas.
6
Copperpyrites (or yellow ore), erubescite (or purple ore), and chalcocite (or grey ore) are the most important.
7
Copperpyrites, by its aspect from the other minerals, and from iron pyrites by its inferior hardness and less gravity.