Cobaltoan Calcite on Matrix – OTH 040

Cobaltoan calcite crystals on matrix

Measurements:  70 x 40 x 35 mm

Description:  Cobaltoan calcite crystals, coated with iron oxide, sit on a quartz conglomorate matrix. 

The specimen has a few nicks.

Weight of Specimen:  98 g

Chemical Composition:  (Ca,Co)CO3 (cobaltoan calcite)

Hardness on Mohs Scale:  (cobaltoan calcite) 3

Location:  Congo (DRC)

Specimen Code:  OTH 040

R 70

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