Malachite, Chrysocolla and Shattuckite on Matrix – OTH 001

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)
                                       Cu₅(OH)₂(SiO₃)₄ (shattuckite) 
                                          Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O  (chrysocolla)  

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

Specimen Code:  OTH 001

R 2 300