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Kollerite

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GMN718782

Kollerite

IMA2018-131
Type Locality

Description Tabs

Description
Locality: 
Pécs-Vasas Mine, Baranya County, Hungary
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 1 × 0.5 cm
Description

A lot of yellow-brownish balls of acicular and culumnar crystals on matrix. This is the 11 th. sulfite mineral worldwide, and this is the first confirmed ammonium sulfite mineral.
I've found the pieces in 2009 in one single occasion, and in a small quantity. The mineral hasn't been found since then.

Rich specimen!

Mineral Data
What's on the rock

Kollerite

Formula: 
(NH4)2Fe3+(SO3)2(OH)·H2O
Crystal System: 
Orthorhombic
Type Locality: 
Pécs-Vasas Mine, Baranya County, Hungary

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