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Marshite

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Marshite

Rare Mineral

Description Tabs

Description
Locality: 
Rubtsovskoe Deposit, Altaiskii Krai, Western Siberia, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2 × 1.5 cm
Description

Exceptionally well crystallized specimen of the very rare copper iodide marshite(CuI) from this already famous Russian deposit. Marshite occurs as complex beige crystals in a contrasting brown matrix.

For an excellent review on the locality see the Mineralogical Record Vol.45, nº4, July-August 2014 article, where it tells that the marshite occurrence inside the mine was only 6 m long ! (p.409).

In addition, the Munich Show report in the Mineralogical Record (Vol.46, num 1, 2015, p.168) tells that "all mining of ore has been ceased, this great locality has reached the end of the line". For this reason, future discoveries of marshite is probably unlikely.

 

 

Mineral Data
What's on the rock

Marshite

Formula: 
CuI
Strunz: 
3.AA.05
Crystal System: 
Isometric
Hardness: 
2.5
Streak: 
Yellow
Type Locality: 
Broken Hill Proprietary Mine (Proprietary Mine; BHP Mine), Broken Hill, Yancowinna Co., New South Wales, Australia

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