Look up: chalcocite

1. chalcocite
   [n] - a heavy gray mineral that is an ore of copper
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. Chalcocite
   Chal'co·cite noun [ Greek chalko`s brass.] (Min.) Native copper sulphide, called also copper glance , and vitreous copper ; a mineral of a black color and metallic luster. [ Formerly written chalcosine .]
   Found on http://www.encyclo.co.uk/webster/C/51
   
   
3. chalcocite
   copper glance noun a heavy grey mineral that is an ore of copper
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
4. Chalcocite
   • (n.) Native copper sulphide, called also copper glance, and vitreous copper; a mineral of a black color and metallic luster.
   Found on http://thinkexist.com/dictionary/meaning
   
   
5. chalcocite
   sulfide mineral that is one of the most important ores of copper. Valuable occurrences include deposits of sulfide minerals at Ely, Nev., and ...
   Found on http://www.britannica.com/eb/a-z/c/51
   
   
6. chalcocite
   chalcocite A gray to black brittle copper sulfide (Cu2S) that is an important ore of copper.
   Found on http://www.wordinfo.info/words/index/inf
   
   
7. Chalcocite
   Chalcocite is one of the most important copper ore minerals. It is native copper Sulphide and is also called copper glance, and vitreous copper. It is a mineral of a black colour and metallic lustre occurring primarily in enriched zones of sulphide deposits. It has the formulae Cu2S and a relative hardness of 3.
   Found on http://www.probertencyclopaedia.com/brow
   
   
8. Chalcocite
   `Chalcocite`, copper(I) sulfide (Cu₂S), is an important copper ore mineral. It is opaque, being colored dark-gray to black with a metallic luster. It has a hardness of 2½ - 3. It is a sulfide with an orthorhombic crystal system. The term chalcocite comes from the alteration of th...
   Found on http://en.wikipedia.org/wiki/Chalcocite