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Tangdanite Azurite & Aragonite

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BCK716315

Description Tabs

Description
Locality: 
Lovelock Mine, Bolivia, Cottonwood Canyon, Churchill County, Nevada, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.3 × 1.7 cm
Description

You are bidding on a beautiful and rich thumbnail from the Martin Jensen collection with exceptional sprays of tangdanite on matrix with groups of azurite blades, aragonite prisms, abundant tiny green balls of conichalcite and minute coatings of orange arseniosiderite and black shiny crednerite. The Lovelock Mine is probably one of the best localities for tangdanite and this is a fantastic, showy example of the species. 

Mineral Data
What's on the rock

Tangdanite

Formula: 
Ca2Cu9(AsO4)4(SO4)0.5(OH)9·9H2O
Hardness: 
0.0
Type Locality: 
Tangdan Mine, Dongchuan Cu ore field, Dongchuan District, Kunming Prefecture, Yunnan Province, China

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...

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

Seller Information

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