1) Copper glance 2) Mineral 3) Monoclinic mineral
Found on
https://www.crosswordclues.com/clue/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 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, ...
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http://en.wikipedia.org/wiki/Chalcocite
• (n.) Native copper sulphide, called also copper glance, and vitreous copper; a mineral of a black color and metallic luster.
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http://thinkexist.com/dictionary/meaning/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
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
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.
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http://www.probertencyclopaedia.com/browse/HC.HTM
Copper(I) sulfide
Found on
http://www.translationdirectory.com/glossaries/glossary075.htm
[
n] - a heavy gray mineral that is an ore of copper
Found on
http://www.webdictionary.co.uk/definition.php?query=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/info/view_unit/431/
Cuprous sulphide ore.
Found on
https://copperalliance.org.uk/about-copper/copper-glossary/
copper glance noun a heavy grey mineral that is an ore of copper
Found on
https://www.encyclo.co.uk/local/20974
A sulphide mineral of copper common in the zone of secondary enrichment.
Found on
https://www.encyclo.co.uk/local/22709
A sulphide mineral of copper common in the zone of secondary enrichment.
Found on
https://www.encyclo.co.uk/local/22733
A sulfide mineral of copper common in the zone of secondary enrichment.
Found on
https://www.encyclo.co.uk/local/22734
a common mineral, cuprous sulfide, CuS: an important ore of copper.
Found on
https://www.infoplease.com/dictionary/chalcocite
A Sulphide ore of Copper with the chemical formula Cu2S. It is a highly valued ore since it approaches 80% Copper by weight.
Found on
https://www.rightonblackburns.co.uk/resources/glossary/copper
No exact match found.
