Copper Sulfides

0.02 sec.

Copper Sulfides

compounds of copper and sulfur, Cu₂S and CuS. Cu₂S (cuprous sulfide) occurs as the grayish black mineral chalcocite, or copper glance, which has a density of 5.5-5.8 g/cm³; three modifications of this mineral are known. Upon heating, Cu₂S oxidizes to form CuO and SO₂ (or CuSO₄). It is practically insoluble in water, dilute acids, and ammonia solutions but soluble in aqueous solutions of FeSO₄, cyanide, and CuCl₂. It dissolves in hot HNO₃ with the liberation of elemental sulfur.

CuS (cupric sulfide) forms the bluish black mineral covellite, or indigo copper, which has a density of 4.68 g/cm³. When heated to temperatures above 450°C, it decomposes into Cu₂S and sulfur. CuS readily undergoes oxidation. Black CuS is precipitated from slightly acidic copper salt solutions by H₂S.

The pyrometallurgical methods of copper extraction are based on the marked affinity of Cu for S.

Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.

?Page tools

Printer friendly
Cite / link

Feedback

Mentioned in	?		References in periodicals archive	?		Encyclopedia browser	?		Full browser	?
No references found			Reconnaissance rock chip sampling at Combaning at the Mother Shipton and Hibernia prospects confirmed the gold potential, and a petrographic analysis of rocks from Mother Shipton has confirmed the potential for a gold-copper (Au-Cu) porphyry target with copper sulfides and gold identified in samples. Carpentaria Exploration Limited (ASX:CAP) Quarterly Report For The ... by ABN Newswire Modification of polyethylene film sulfurized in solution of higher polythionic acids by layers of copper sulfides. Formation of mixed copper sulphide and silver sulphide layers on low ... by Ancutiene, Ingrida; Ivanauskas, Remigijus / Proceedings of the Estonian Academy of Sciences 011% molybdenum within a mixture of chalcocite and primary copper sulfides in monzonite and skarn. Norsemont encounters several high grade intercepts in first seven ... by PR Newswire			copper oleate copper ore Copper Ores copper orthoarsenite copper oxide Copper Oxide Cell copper oxide photovoltaic cell copper oxide rectifier Copper Oxides Copper Oxychloride copper pair Copper Plating copper powder copper pyrite copper pyrites copper resinate copper roofing Copper Sandstones and Shales copper sheet copper slate copper spot copper steel Copper Sulfate copper sulfide copper sulfide rectifier Copper Sulfides copper sulphate copper sweetening copper tube copper uranite copper vapor laser copper wire Copper, Captain Copper, Native copper-64 copper-8-quinolinolate copper-strip corrosion copper-strip test copperas Copperas Cove Copperbelt Copperbelt of Central Africa Copperbelt of Chile Copperhead Copperheads coppering coppering bit copperite copperlight glazing Coppermine Coppermine River			Copper River Copper River and Northwestern Copper River Basin Regional Housing Authority Copper River Knowledge System Copper River School District copper rockfish copper roofing Copper Sandstones and Shales Copper shark Copper sheet Copper sheet Copper sheet Copper sheet metal Copper sheet metal Copper sheet metal copper slate copper spot copper steel Copper storage disease Copper storage disease Copper storage disease Copper Street Brass Quintet copper sulfate copper sulfate copper sulfate copper sulfate copper sulfate test Copper sulfide Copper Sulfide Rectifier Copper Sulfide Rectifier Copper Sulfides copper sulphate copper sulphate Copper sulphide copper sweetening Copper T Copper To The Curb Copper To The Home copper trace Copper Transporter Copper Tube Copper Tube Copper Tube Size Copper units of pressure copper uranite Copper Valley Electric Association Copper Valley Telephone Cooperative Copper Value Added Copper vapor laser Copper vapor laser Copper Water Tube Copper Wideband Serving Section Copper wire Copper Wire Appearance copper wire artery copper wire artery copper wire artery Copper Wire Screen Copper works copper's nark

Encyclopedia

Free Tools:	For surfers: Free toolbar & extensions \| Word of the Day \| Help For webmasters: Free content \| Linking \| Lookup box \| Double-click lookup

Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.