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Cosalite

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PDM903962

Cosalite

Description Tabs

Description
Locality: 
Kara Oba, Karaganda Oblast, Kazakhstan
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.6 × 1.9 cm
Weight: 
22.00gr
Description

Prismatic to acicular crystals of cosalite with dull lustre because they are coated by a Bi sulphide, likely bismuthinite, in a matrix of siderite and pyrite.

Analysed specimen by SEM-EDS, as shown in the pictures.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Cosalite

Formula: 
Pb2Bi2S5
Strunz: 
2.JB.10
Hardness: 
2.5 - 3.0
Colour: 
Grey
Streak: 
Black
Type Locality: 
Cosalá Mine, Cosalá, Mun. de Cosalá, Sinaloa, Mexico

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