Malachite, Chrysocolla and Shattuckite on Matrix OTH 001

Malachite, chrysocolla and shattuckite on matrix

Measurements:  210 x 140 x 90 mm

Description:  A specimen consisting of a few cavities in (?)quartzite, lined with malachite crystals, with the edges having chrysocolla and shattuckite. 

The specimen has relatively little damage and displays well, all-round.

Weight of Specimen:  1.66 kg

Chemical Composition:  Cu2+(CO3)(OH)2 (malachite)
5(OH)2(SiO3)4 (shattuckite) 
                                          Cu2-xAlx(H2-xSi2O5)(OH)4  nH2O  (chrysocolla)  

Hardness on Mohs Scale:   (malachite)  3.5 - 4
(shattuckite)  3.5
                                          (chrysocolla)  2.5 - 3.5

Location:  Congo (DRC)

Specimen Code:  OTH 001

R 2 300

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