chalcopyrite

That piece of chalcopyrite has to go back where it came from.

That piece of chalcopyrite must go back; there are men waiting for the next specimen."

Chalcopyrite is rarely found in association with native copper.

Natural chalcopyrite has no solid solution series with any other sulfide minerals.

Chalcopyrite in this environment is produced by concentration within a magmatic system.

It was the largest deposit of nearly pure chalcopyrite ever discovered in Canada.

It is often found in association with the minerals chalcopyrite and triphylite.

Chalcopyrite is a copper iron sulfide that glitters like gold.

Chalcopyrite is concentrated in this environment via fluid transport.

Pyrite and chalcopyrite are present in small amounts.

It is an alteration product of galena and chalcopyrite.

Chalcopyrite is the main ore of copper.

It is a tetrahedrally bonded semiconductor, with the chalcopyrite crystal structure.

Chalcopyrite is present with many ore-bearing environments via a variety of ore forming processes.

Take that chalcopyrite from the Pliocene.

Thus, manto deposits need not be the weathered equivalents of primary chalcopyrite.

First, they are polycrystalline α-phase which has the chalcopyrite crystal structure shown in Figure 3.

On exposure to air, chalcopyrite oxidises to a variety of oxides, hydroxides and sulfates.

Chalcopyrite is the principal ore mineral.

In later years, "orichalcum" was used to describe the sulfide mineral chalcopyrite or brass.

These minerals are accompanied by sphalerite, pyrite and chalcopyrite.

Copper is associated with chalcopyrite.

It occurs in high temperature hydrothermal deposits with pyrrhotite and chalcopyrite.

Galena and chalcopyrite were observed under the microscope in the samples used for reflectance measurements in these areas.

"A piece of chalcopyrite; a miserable five-kilogram piece?