emeraldcityminerals: Blue sprays of cyanotrichite…

Posted on 12 July 2016 by admin

emeraldcityminerals:

Blue sprays of cyanotrichite (Cu4Al2(SO4)(OH)12?2H2O) interspersed with green brochante (Cu4(SO4)(OH)6). From?Grand View Mine, Coconino Co., Arizona

Geology Nerd

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