Chalcocite - Wikipedia
网页Chalcocite (/ ˈ k æ l k ə ˌ s aɪ t /), [6] [7] 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 2.5–3 on the Mohs scale. It is a sulfide with a monoclinic crystal system. The term chalcocite from the Greek khalkos, meaning "copper".
Chalcocite: Mineral information, data and localities. - mindat.org
网页Formula: Cu2S. Colour: Blue black, gray, black, black gray, or steel gray. Lustre: Metallic, Sub-Metallic. Hardness: 2½ - 3. Specific Gravity: 5.5 - 5.8. Crystal System: Monoclinic. Member of: Chalcocite-Digenite Group. Name: Named chalcosine in 1832 by François Sulpice Beudant from Greek, "chalkos", copper.
Chalcocite | Copper Ore, Sulfide Ore, Ore Mining | Britannica
网页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 Tsumeb, Namibia, and Butte, Mont.
The Mineral chalcocite - The Mineral and Gemstone Kingdom
网页Chalcocite is a coveted and iconic mineral among collectors. Specimens from classic and extinct localities, such as Cornwall, England and Bristol, Connecticut, will command extremely high prices, especially when in good crystals. Chalcocite forms from the alteration of other minerals, especially other copper sulfides such as Bornite, Covellite ...
Chalcocite Mineral Data
网页Secondary mineral in or near the oxidized zone of copper sulfide deposits. IMA Status: Valid Species (Pre-IMA) 1832. Locality: Cornwall, England and Butte, Montana. Link to MinDat.org Location Data. Name Origin: From the Greek, meaning …
Chalcocite (cc) - SpringerLink
网页2023年7月13日 · This chapter describes the important copper ore Chalcocite (abbrv. cc), as seen with optical, reflected light microscopy. Compositional data, main properties and optical parameters are first summarized (introductory table and preliminary remarks).
网页Chalcocite Cu2S. Crystal Data: Monoclinic, pseudo-orthorhombic. Point Group: 2/m or m. Crystals are short prismatic [001], thick to tabular {001}, to 12 cm across, and prismatic [100], to 25 cm long; {001} is striated k [100]. Massive, compact, fine powdery.
Origins of Chalcocite Defined by Copper Isotope Values
网页2018年1月28日 · Chalcocite is an economically important mineral of copper. Crystallographic, trace element, mineral assemblage, and textural observations and measurements have been used to understand the origin of this mineral [1 – 3]. Models regarding the genesis of chalcocite vary substantially, with conditions ranging from the highest temperature ...
Chalcocite - Natural Atlas
网页Chalcocite (UK: ), copper(I) sulfide (Cu2S), 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…
Chalcocite – WGNHS – UW–Madison
网页Formula: Cu 2 S Monoclinic. Description: Chalcocite is formed either as a primary vein mineral or, more typically, in supergene deposits where it forms as a result of the redeposition of copper from the breakdown of minerals such as chalcopyrite or bornite.