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Avicennite

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GFM1015341

Avicennite

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Description Tabs

Description
Locality: 
Erzmatt, Buus, Basel-Land, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 3.4 × 3 cm
Description

The extremely rare Thallium-Oxide, which has only been found in a few places worldwide, occurs here as crystal groups of black radial spherical crystal aggregates of up to 2 mm, very rich on beige Carbonatite matrix. Interesting specimens from a new find.

Mineral Data
What's on the rock

Avicennite

Formula: 
Tl2O3
Strunz: 
4.CB.10
Crystal System: 
Isometric
Hardness: 
1.5 - 2.5
Type Locality: 
Dzhuzumli village, Zirabulak railway station, Zirabulak Mountain (Zirabulakskie Mountain), Samarkand Viloyati (Samarqand), Uzbekistan