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Russellite & Atelestite

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JYJ747520

Russellite & Atelestite

New find! 19-10-16-bol6 EDS & Raman

Description Tabs

Description
Locality: 
Tazna, Cerro Tazna, Atocha-Quechisla, Nor Chichas Province, Potosi Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 1.8 × 1.8 cm
Description

A recently examined find of the rare Bi-W mineral russellite on bismutite-wolframite matrix. The colourless crystals are atelestite (EDS & Raman). 

The rise of russellite might be due to altered wolframite close to the Bi rich mineralisation. Analysis attached. 

 

Mineral Data
What's on the rock

Russellite

Formula: 
Bi2WO6
Strunz: 
4.DE.15
Crystal System: 
Tetragonal
Hardness: 
3.5
Type Locality: 
Castle-an-Dinas Mine, Castle-an-Dinas, St Columb Major, St Austell District, Cornwall, England, UK

Atelestite

Formula: 
Bi2(AsO4)O(OH)
Strunz: 
8.BO.15
Crystal System: 
Monoclinic
Hardness: 
4.5 - 5.0
Type Locality: 
Neuhilfe Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany
Analysis
Analysis Report - only: Russellite & Atelestite
Analysis Report - only: Russellite & Atelestite
Analysis Report - only: Russellite & Atelestite
Analysis Report - only: Russellite & Atelestite
Analysis Report - only: Russellite & Atelestite