Bornite | Article about Bornite by The Free Dictionary

bornite[′bȯr‚nīt] (mineralogy) Cu5FeS4 A primary mineral in many copper ore deposits; specific gravity 5.07; the metallic and brassy color of a fresh surface rapidly tarnishes upon exposure to air to an iridescent purple. Bornite (named after the Austrian metallurgist and mineralogist I. Born, 1742–91), a mottled copper ore, a mineral and a ...

Butte ores - Missouri University of Science and Technology

Bornite occurs as abundant irregularly shaped replacement remnants ("sea islands") that are being replaced by chalcocite. This polished section has been freshly polished and therefore the bornite is still tan in color. Butte, Montana copper ores. Ore microscopy, reflected light, medium magnification.

Bornite Mineral Information, photo and Facts: Copper Ore

Bornite is probably a basic sulpho-ferrite, though analyses yield results that vary quite widely, especially in the case of massive varieties. This variation is due to the greater or less admixture of copper sulphides, mainly chalcocite, with the bornite.

Peacock Ore | WhatAEarth

Peacock Ore (Bornite) is a crystaline variety of Chalcopyrite and they have very similar properties. Bornite is a copper iron sulfide mineral commonly found in hydrothermal veins, contact metamorphic rocks and in the enriched zone of sulfide copper deposits. It is a common ore of copper and is easily recognized because it tarnishes to iridescent shades of blue, purple, green and yellow.

Chalcocite | mineral | Britannica.com

Chalcocite, sulfide mineral that is one of the most important ores of copper. Valuable occurrences include deposits of sulfide minerals at Ely, Nev., and Morenci, Ariz., where other components of the original rock have been dissolved away; it is also found with bornite in the sulfide veins of

Chalcopyrite - Mineral and Healing Properties

As an ore of copper, the yield of chalcopyrite is rather low in terms of atoms per molecule. It is only 25%, compared to other copper minerals such as chalcocite, Cu2S - 67%; cuprite, Cu2O - 67%; covellite, CuS - 50% or bornite Cu5FeS4 - 50%.

Chalcocite - an overview | ScienceDirect Topics

Copper is most commonly present in the earth's crust as copper–iron–sulfide and copper sulfide minerals, for example, chalcopyrite (CuFeS 2), bornite (Cu 5 FeS 4), and chalcocite (Cu 2 S). The concentrations of these minerals in an ore body are low. Typical copper ores contain from 0.5% Cu (open-pit mines) to 1−2% Cu (underground mines).

Bornite Facts - Softschools.com

Found in hydrothermal veins, contact metamorphic rocks, and in the enriched zone of sulfide copper deposits is Bornite, which is often referred to as Peacock Ore. It is a copper iron sulfide mineral, a common ore of copper. It is easily recognized in iridescent shades of blue, purple, green and yellow on a tarnished surface. On a fresh surface it can appear as brownish bronze.

Bornite Mineral Data - webmineral.com

Bornite Briartite Catamarcaite. Comments: Briartite-type phase (Bri) in close association with catamarcaite (Ct) lining a cavity in massive bornite (Bn) - chalcocite (Cc) ore; Sp is sphalerite (CanMin v44:1481). Location: Bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina..

Bornite (Peacock Ore) - Prehistoric Online

Bornite is an important copper ore mineral and occurs widely in porphyry copper deposits along with the more common chalcopyrite. Chalcopyrite and bornite are both typically replaced by chalcocite and covellite in the supergene enrichment zone of copper deposits. Bornite is also found as disseminations in mafic igneous rocks, in contact ...

Thin section in reflected light - petrology and mineralogy ...

Easy way to see ore minerals in reflected light. ... with copper ore - Polkowice mine, SW Poland. Polished rock chip made from permian limestone with copper ore. Limestone with bornite (orange) and covelline (blue) ... rim, in the bornite also see the chalcocite small inclusions (light blue) and coveline replaces pyrite (dark blue) Bornite ...

PME 983 Bornite & Chalcopyrite | Below BC

Fresh bornite, however, is copper red. Bornite commonly occurs with other copper sulphide minerals such as chalcocite and weathers, or "oxidizes", to malachite. Chalcopyrite is the most common ore mineral for copper. Chalco comes from the Greek word chalko, meaning copper.

CHALCOCITE (Copper Sulfide) - galleries.com

Chalcocite is an important copper mineral ore. It has been mined for centuries and is one of the most profitable copper ores. The reasons for this is its high copper content (67% atomic ratio and nearly 80% by weight) and the ease at which copper can be separated from sulfur.

PME S74-4302 Bornite | Below BC

Bornite is an important copper ore mineral found in many different types of copper deposit. It is also known as peacock ore because of its iridescent purple-blue-green tarnish. Fresh bornite, however, is copper red. Bornite commonly occurs with other copper sulphide minerals such as chalcocite and weathers, or "oxidizes", to malachite.

Chalcocite - Wikipedia

Chalcocite (UK: / ˈ k æ l k ə ˌ s aɪ t /), copper(I) sulfide (Cu 2 S), is an important copper ore mineral. It is opaque and dark-gray to black with a metallic luster.It has a hardness of 2 1 ⁄ 2 - 3 on the Mohs scale.It is a sulfide with an orthorhombic crystal system.. The term chalcocite comes from the alteration of the obsolete name chalcosine, from the Greek khalkos, meaning copper.

: bornite

THE RELATION OF BORNITE AND CHALCOCITE IN THE COPPER ORES OF THE VIRGILINA DISTRICT OF NORTH CAROLINA AND A. by Francis Baker Laney. Pamphlet More Buying Choices $9.90 (1 used offer) THE SO-CALLED GRAPHIC INTERGROWTH OF BORNITE AND CHALCOCITE. by Austin F Rogers ...

Wisconsin Geological & Natural History Survey » Chalcocite

Minerals commonly associated with chalcocite include malachite, azurite, chalcopyrite, bornite and covellite. CRAWFORD COUNTY: Chalcocite is one of the components of the ore at the Plum Creek copper mine in the SE SW Sec. 26 T.8N R.5W northwest of Wauzeka and in adjacent areas along Otter Creek (Heyl and West, 1983).

Bornite Mineral Data

Bornite Briartite Catamarcaite. Comments: Briartite-type phase (Bri) in close association with catamarcaite (Ct) lining a cavity in massive bornite (Bn) - chalcocite (Cc) ore; Sp is sphalerite (CanMin v44:1481). Location: Bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina..

Chalcocite - Wikipedia

Chalcocite (UK: / ˈ k æ l k ə ˌ s aɪ t /), copper(I) sulfide (Cu 2 S), is an important copper ore mineral. It is opaque and dark-gray to black with a metallic luster.It has a hardness of 2 1 ⁄ 2 - 3 on the Mohs scale.It is a sulfide with an orthorhombic crystal system.

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Bornite Mineral | Physical - Optical Properties ...

Bornite is also known as "purple copper ore" and "variegated copper ore." Bornite crystals are uncommon. Although they exhibit orthorhombic symmetry, crystals, when found, are cubic, octahedral, or dodecahedral, often with curved or rough faces. Bornite is frequently compact, granular, or massive and alters readily to chalcocite and ...

Bornite - definition of bornite by The Free Dictionary

Phase 2: Stronger and later overprinting mineralization events are also evident in most of the new drill holes, including widespread garnet-bearing skarns containing clots, veins, and disseminations of covellite, native copper, and bornite, with local formation of secondary chalcocite.

Bornite: A mineral, an ore of copper, often called ...

Bornite is an important copper ore mineral. It ranks up there with many of the other copper ores such as chalcocite, chalcopyrite, covellite, digenite, cuprite and tetrahedrite. As a mineral specimen, bornite is usually lacking. Good crystals are rare and thus bornite is commonly known as simply a massive mineral ore.

Bornite | mineral | Britannica.com

Bornite, a copper-ore mineral, copper and iron sulfide (Cu 5 FeS 4). Typical occurrences are found in Mount Lyell, Tasmania; Chile; Peru; and Butte, Mont., U.S. Bornite, one of the common copper minerals, forms isometric crystals but is seldom found in these forms. It alters readily upon weathering to chalcocite and other copper

Copper mining. From ore to copper. - SchoolScience.co.uk

What's in an ore? There are many types of copper ore found throughout the world. Picture 4 shows the distribution of these deposits. About 80% of all copper extracted comes from sulphide ores. A typical ore contains only 0.5% to 2.0% copper. It is a measure of the value of copper that it is worth extracting it from such small concentrations.

Bornite - Wikipedia

Bornite is an important copper ore mineral and occurs widely in porphyry copper deposits along with the more common chalcopyrite. Chalcopyrite and bornite are both typically replaced by chalcocite and covellite in the supergene enrichment zone of copper deposits. Bornite is also found as disseminations in mafic igneous rocks, in contact ...

Bornite, Peacock Ore, The Stone Of Happiness • Your ...

Aug 26, 2015· Bornite, also known as Peacock Ore, is called "the stone of happiness." The healing properties of Bornite carry the message that life is truly joyful. Bornite is an important ore of copper. In the ground, Bornite is bronze in color, but the metallic luster tarnishes rapidly to purple after a freshly broken surface is exposed […]