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Glaucodot

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QRI773793

Glaucodot

Former collection Christian Mavris
Rare Mineral

Description Tabs

Description
Locality: 
Håkansboda, Lindesberg, Örebro County, Sweden
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1.4 cm
Largest Crystal: 
1.30cm
Weight: 
9.00gr
Description

Superb thumbnail consisting of a group of 3 glaucodot crystals kept together by the classic sulphide gangue. Crystals are sharp, well developed, very lustrous for both specie and locality. Two of them (middle and smaller one in size) feature an interesting contact which resembles a twin - something I had not encountered in the (very few, really) glaucodot specimens I have come across until now. 

An excellent thumbnail from this long defunct locality, very hard to come nowadays in this size and quality. It comes with some peripheral bruising, as most specimens from Hakansboda do.

Straight out of my personal collection, this specimen is at least 50 years old, and it comes with its original Indergand label (CH).

Mineral Data
What's on the rock

Glaucodot

Formula: 
(Co0.50Fe0.50)AsS
Strunz: 
2.EB.10c
Crystal System: 
Orthorhombic
Hardness: 
5.0
Streak: 
Black
Type Locality: 
Huasco, Huasco Province, Atacama Region, Chile

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