Chrysocolla : Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O, x < 1
As recorded:
Sierrita Mine, Batamote Hills, Pima Mining District, Sierrita Mountains, Pima County, Arizona, USA
1.6cm x 0.6cm x 0.4cm
Photo added to mindat.org
“1.6 x 0.6 x 0.4 cm. A fine stalactitic thumbnail specimen of turquoise-colored chrysocolla with a translucent covering of microcrystalline quartz, from Arizona. Ex. Jaime Bird Collection.
”
Robert Lavinsky - 11th March 2009
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