Calcite Crystals on Matrix - NTS 035

Small, clear calcite crystals with bits of (?)duftite, on matrix

Measurements:  84 x 75 x 55 mm

Description:  Small, clear calcite crystals, with bits of (?)duftite, sit on a matrix consisting of minute crystals of a (to us, unknown) mineral, possibly quartz. 

The specimen, that has a sparkle to it when viewed in light, has relatively little damage.

Weight of Specimen:  206 g

Chemical Composition:  CaCO3  (calcite)
                                        PbCu(AsO4)(OH)  (duftite)

Hardness on Mohs Scale:  (calcite)  3
                                           (duftite)  4 

Location:  Tsumeb, Northern Namibia.

Specimen Code:  NTS 035

US $ 45

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