Collection: Rosasite
Formula: (Cu,Zn)2(CO3)(OH)2
Cu: Zn ratio is near 3:2.
Colour: Blue, blue-green to green, sky-blue; colourless to light blue in transmitted light.
Lustre: Vitreous, Silky
Hardness: 4½
Specific Gravity: 4 - 4.2
Crystal System: Monoclinic
Member of: Rosasite Group
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