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Chalcothallite

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SKY873868

Chalcothallite

Type Locality

Description Tabs

Description
Locality: 
Ilímaussaq, Narsaq, Kujalleq, Greenland
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 2 × 2 cm
Description

Black microcrystals of the extremely rare thallium mineral chalcothallite from the type and only one of the few known localities, all of them in Greenland.

The grey black rounded microcrystals can clearly be seen on the left side of photo 1.

Don't miss the opportunity to get this extreme rarity almost never seen in the mineral market.

Ex Vandenbroucke Museum collection from Waregem, Belgium.

No duplicates available.

Mineral Data
What's on the rock

Chalcothallite

Formula: 
Tl2(Cu,Fe)6SbS4
Strunz: 
2.BD.40
Crystal System: 
Tetragonal
Hardness: 
2.0 - 2.5
Streak: 
Black
Type Locality: 
Nakalak Mt (Nakalaq; Nakkaalaaq), Taseq area, Ilímaussaq complex, Narsaq, Kujalleq, Greenland

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