Rich royal blue Henmilite crystals to 4mm against a contrasting white matrix. Henmilite is a rare copper borate species Minerals Gems Elements, Rocks Ores Minerals, Crystals Minerals Gems Quartz, Copper, Wonder Minerals, Crystals Mineral Rocks, Royals Blue, Gemstones Rocks Etc, Blue Henmilit
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Chalcoalumite from Bisbee,Az cobalt123's photostream. CuAl4(SO4)(OH)12•3(H2O) A secondary Copper mineral.
Gem Silica with Azurite and Malachite. Gem Silica or Gem Chrysocolla is a rare form of chalcedony colored by copper ... It is often found mixed with malachite, azurite, turquoise or quartz.