bornite
boronite
peacock ore

Butte is also home to one of the largest deposits of Bornite.

It is often mistaken for bornite.

Also, it was found to have a reactivity lower than pyrite, but distinctly higher than bornite.

Copper sulphides such as chalcopyrite and bornite are frequently associated with the gold component of these deposits.

Bornite has a brown to copper-red color on fresh surfaces that tarnishes to various iridescent shades of blue to purple in places.

Major sulfide minerals are pyrite, chalcopyrite, bornite and chalcocite.

In this locality digenite is found with covellite, chalcocite and bornite.

Examples include opal, labradorite, ammolite and bornite.

The mine also produced a small tonnage of copper (bornite) and approx 22,000 tons of fine barytes.

Fukuchilite was found to have a reflection color very similar to bornite and bright pinkish brown in air, while being a purplish brown in oil.

Bornite is an important copper ore mineral and occurs widely in porphyry copper deposits along with the more common chalcopyrite.

The mineral bornite (CuFeS), a common copper ore mineral was named in his honour.

High digenite is isostructural with bornite CuFeS.

One variation consisted of a pair of different crystals with their faces touching, such as zincite touching bornite or chalcopyrite.

The ores with the highest sulfide contents, such as bornite and chalcopyrite will require more oxidants and will dissolve more slowly.

In the mining industry, the minerals bornite or chalcopyrite, which consist of mixed copper-iron sulfides, are often referred to as "copper sulfides".

Bornite, also known as peacock ore, is a sulfide mineral with chemical composition CuFeS that crystallizes in the orthorhombic system (pseudo-cubic).

Chalcopyrite and bornite are both typically replaced by chalcocite and covellite in the supergene enrichment zone of copper deposits.

The copper occurs as chalcocite, bornite, covellite, cuprite, and malachite, in quartzite of the Silurian High Falls Formation.

These minerals were overprinted by a formation of mostly copper-rich minerals, including cobalt-bearing chalcopyrite, and germanium and silver-bearing bornite, plus molybdenite.

It is typically associated with and often intergrown with chalcocite, covellite, djurleite, bornite, chalcopyrite and pyrite.

Metallic minerals identified at Pebble Copper include pyrite, chalcopyrite, molybdenite, and bornite, along with minor covellite, chalcocite, digenite, and magnetite.

The minerals identified at the site include: haematite, chalcopyrite, tennantite, galena, tetrahedrite, bornite, pyrite, marcasite, enargite and sphalerite.

It is a medium to low temperature hydrothermal mineral occurring with quartz, pyrite, sphalerite, galena, bornite, tetrahedrite-tennantite, chalcocite, covellite and baryte.

It occurs in association with chalcocite, bornite, willemite, smithsonite, hydrozincite, hemimorphite, adamite, olivenite and gebhardite.