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Manganocalcite, Inner Mongolia; 6 1/2" Across

This combination piece consist of manganocalcite, quartz and scheelite on magnetite. The crystal that appears to be a scheelite crystal may in fact be an intermediate in a solid solution series between powellite and scheelite. This piece was formerly in the collection of Professor Stephen Smale and I acquired it during one of my visits to Hong Kong to trade minerals with Professor Smale.

Matthew Webb Photo

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