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Chrysocolla Psm Malachite

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KMF642446

Chrysocolla Psm Malachite

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: 
14 × 10 × 8 cm
Description

A super aesthetic 14cm psm specimen from the original find featuring typical pale plancheite casts hosting many vibrant prismatic malachite psm crystals measuring up t0 4cm in length that have altered to chrysocolla.

Cleaved crystals reveal the inner green malachite core surrounded by a thick layer of translucent chrysocolla- I am not convinced that these crystals were azurite prior to being replaced by malachite. A rich matte silver colored botryoidal metallic mineral deposit is evident on all surfaces indicating its later development.

The condition is superb with some peripheral cleaved crystals.

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

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Seller Information

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