Measurements: 43 x 35 x 35 mm
Description: Clear smithsonite crystals up to about 5 mm wide with small, black inclusions (probably related to the matrix) sit on and in a dark grey / blackish (heavy) metallic matrix. The smithsonite crystals are well formed and the combination of clear and dark grey / black makes for a lovely specimen.
Only a few of the crystals have minute to small nicls.
Weight of Specimen: 62.9 g
Chemical Composition: ZnCO3 (basic smithsonite formula)
Hardness on Mohs Scale: (smithsonite) 4 - 4½
Location: Tsumeb, Northern Namibia.
Specimen Code: NTS 021
US $ 170