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Azurite Brochantite Bayldonite & Olivenite

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ESM703545

Azurite Brochantite Bayldonite & Olivenite

Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.4 × 4.5 × 3.5 cm
Description

Lustrous green brochantite crystals on blue azurite crystals (partially pseudomorph) on a green bayldonite (EDX checked) matrix with some greyish-green olivenite crystals

Mineral Data
What's on the rock

Azurite

Formula: 
Cu3(CO3)2(OH)2
Strunz: 
5.BA.05
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Chessy copper mines, Chessy-les-Mines, Le Bois d'Oingt, Rhône, Rhône-Alpes, France...

Brochantite

Formula: 
Cu4(SO4)(OH)6
Strunz: 
7.BB.25
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Mednorudyanskoye Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia...

Bayldonite

Formula: 
PbCu3(AsO4)2(OH)2
Strunz: 
8.BH.45
Crystal System: 
Monoclinic
Hardness: 
4.5
Type Locality: 
Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK...

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