Rock 366 : Day 287 : Chalcophanite

Rock3661238

Day 287 : Chalcophanite, a zinc, manganese hydroxide. The name implying copper (literally ‘brass appears’) seems to relate to the colour when burnt. From Ojuela Mine, Mapimí, Durango, Mexico. Cotton collection, Keele.

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~ by hypocentre on October 28, 2012.

 
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