Dioptase, Planchéite, Shattuckite and Calcite Specimen – VAR 048

Combination specimen of dioptase, calcite, planchéite and shattuckite

Measurements:  81 x 59 x 28 mm

Description:  A solid piece of dioptase with fascinating formations, probably formed by the combined growth with other minerals of which the latter has since eroded. The specimen has a few dioptase crystals, as well as bits of calcite, planchéite and shattuckite. The specimen has some damage.

Weight of Specimen:  114.1 g

Chemical Composition:  Cu2+SiO2(OH)2 (dioptase
                                       Cu8Si8O22(OH)4•(H2O)  (planchéite
                                       Cu5(OH)2(SiO3)4  (shattuckite) 
                                       CaCO3  (calcite)  

Hardness on Mohs Scale:  (dioptase)  5
                                          (planchéite)  5.5 
                                          (shattuckite)  3.5
                                          (calcite)  3

Location:  Katanga, Congo (DRC), Africa.

Specimen Code:  VAR 048

us $ 185



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