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Coquandite

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GMN189222

Coquandite

New Discovery

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Description
Locality: 
Minei Hill, Baia Sprie Mine, Baia Sprie, Maramureș County, Romania
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 3.4 × 2 cm
Description

A lot of white tufts of tabular crystals on stibnite needles in massive stibnite cavities.
I have found Coquandite only once in the mine and it was on an old piece. I was very happy that I could find very beautiful and rich pieces on the dump this time. This is one of the richest pieces even if it cannot be seen unequivocally in the photo.

Mineral Data
What's on the rock

Coquandite

Formula: 
Sb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)
Strunz: 
7.DE.35
Crystal System: 
Triclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Lucky Knock Mine (Lawrence Mine), Whitestone Coulee, Tonasket, Okanogan Co., Washington, USA

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