enargite

A Dictionary of Earth Sciences | 1999 | 276 words | Copyright

enargite A sulphide mineral Cu₃AsS₄ and end-member of an isomorphous series, the other end-member being famatinite Cu₃SbS₄; sp. gr. 4.5; hardness 3; greyish-black; metallic lustre; occurs as irregular grains in association with other sulphides in copper-rich mineral deposits.

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AILSA ALLABY and MICHAEL ALLABY. "enargite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>.

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