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Gartrellite & Olivenite

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CR82109

Gartrellite & Olivenite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4.8 × 2.6 cm
Description

This is a very rich gartrellite specimen from Tsumeb.

Gartrellite forms yellowgreen microcrystalline masses and small crystalgroups between olivegreen olivenite crystals and darkblue azurite crystals.

Very good and rich specimen !

Gartrellite is XRD confirmed !

Mineral Data
What's on the rock

Gartrellite

Formula: 
Pb(Cu,Fe3+,Zn)2(AsO4,SO4)2·2(H2O,OH)
Strunz: 
8.CG.20
Crystal System: 
Triclinic
Hardness: 
1.0 - 2.0
Streak: 
Yellow
Type Locality: 
Ashburton Downs Station, Ashburton Shire, Western Australia, Australia

Olivenite

Formula: 
Cu2(AsO4)(OH)
Strunz: 
8.BB.30
Crystal System: 
Orthorhombic
Hardness: 
3.0
Type Locality: 
Carharrack Mine, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK