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  Polybasite is a sulfosalt mineral of silver, copper, antimony and arsenic. Its chemical formula is (AgCu)16(SbAs)2S11.

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.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Polybasite". A list of authors is available in Wikipedia.
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