Up to 3% combined pyrite and chalcopyrite are commonly associated the molybdenite.
From the foxbusiness.com
Local pods and shears contain chalcopyrite and specularite, no results are reported.
From the foxbusiness.com
Magnetite, chalcopyrite, pyrite, sphalerite, silica and talc may occur with chlorite.
From the foxbusiness.com
Chalcopyrite and Pentlandite intergrowths with nickeliferous pyrrhotite were also observed.
From the hemscott.com
Disseminated pyrrhotite with trace arsenopyrite and chalcopyrite was locally noted through this interval.
From the foxbusiness.com
Common copper minerals are chalcopyrite and chalcocite.
From the foxbusiness.com
The sheath is decorated by fish skin, the yellow and white parts are mixed by chalcopyrite and copper.
From the en.wikipedia.org
It consists of magnetite, pyrite, chalcopyrite and tiny amounts of sphalerite, ilmenite and rutile.
From the en.wikipedia.org
The mineralization of the B zone consists of disseminated to massive chalcopyrite, pyrrhotite, pyrite and sphalerite.
From the foxbusiness.com
More examples
A yellow copper ore (CuFeS2) made up of copper and iron sulfide
Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has the chemical composition CuFeS2.
A sample composed of pieces of vein or mineral deposit that have been cut out of a small trench or channel, usually about 10 cm wide and 2 cm deep.
A sulphide mineral of copper and iron; the most important ore mineral of copper.
This is the principal ore of copper in the lead regions, and is most abundantly found in the vicinity of Mineral Point. It usually occurs massive, frequently mixed with Pyrite; small and indistinct crystals are occasionally found.