Dark green Herbertsmithite crystals with near adamantine lustre coat one face of a Dolomitic matrix. Awarded IMA status in 2003, this is rich example of an unusual Copper Zinc Halide, originally thought to be Zinc bearing Paratacamite.Ex Francesco Bedognč coll. #2001
Formula :
Cu33Zn[(OH)3|Cl]2
System: triclinic Hardness:3-3½ Rarity:rare
Strunz id:III/D.01-57 -
III - Alogenures
Name origin: Honouring Dr. G. F. Herbert Smith (1872-1953) of the Natural History Museum, London, England, who discovered the mineral Paratacamite.
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 Specimen weight:15 gr.
 Crystal size:Up to 1 mm
 Overall size: 43mm x 30 mm x 12 mm
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