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Chrysocolla Psm

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KMF642460

Chrysocolla Psm

Pseudomorph

Description Tabs

Description
Locality: 
Lupoto Mine, Lubumbashi, Katanga, Congo (Democratic Republic) (former Zaire)
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 9.5 × 4 cm
Description

This large three dimensional floater specimen is from a small discovery made in 2015- notable for two reasons: its consistent vibrant turquoise colored chrysocolla that was the best at the time and the spheroidal radiating aggregates that were until then unknown- unlike any predecessors this style is void of elongated prismatic psm crystals. 

Peripheral edges reveal the presence of malachite as an underlying internal structure not evident from the cast like exterior either. Its similarity to the new find material is clear yet the most recent find is far more vibrant in color leaving us to assume that this is more decayed in some way lacking luster also. The entire surface consists of radiating sprays comprised of many finger like crystals.

This specimen is undamaged save from some edge wear.

Mineral Data
What's on the rock

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5

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