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To: coug who wrote (3554)	11/18/2009 8:40:50 PM
From: coug	1 Recommendation Read Replies (1) of 3961

Polybasite Polybasite is a sulfosalt mineral of silver, copper, antimony and arsenic. Its chemical formula is (AgCu)16(SbAs)2S11. A sample of Polybasite It forms black hexagonal crystals which can show dark red internal reflections. It has a Mohs hardness of 2.5 to 3. It is found worldwide and is an ore of silver. The name comes from the number of base metals in the mineral. wapedia.mobi

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