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Olivenite & Bayldonite

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CR65979

Olivenite & Bayldonite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 4 × 3.8 cm
Description

This is a very good and rich olivenite specimen from Tsumeb.

Sharp olivegreen Olivenite crystals in several vugs through all the matrix. The matrix consists of green bayldonite (XRD confirmed) and blue azurite.

Ex Walter Rieger collection.

Mineral Data
What's on the rock

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

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...