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Willemite & Zincian Dolomite

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CLB584619

Willemite & Zincian Dolomite

Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 3.5 × 3 cm
Description

Fantastic specimen with very glossy, transparent, blueish green willemite crystals on both sides. On one side they sit on a 'lawn' of tiny pale green (zincian?) dolomite (visual ID), while on the other side the willemite crystals are covering a large area of the matrix, joined by bigger, white, rhombic dolomite crystals.

Mineral Data
What's on the rock

Willemite

Formula: 
Zn2SiO4
Strunz: 
9.AA.05
Hardness: 
5.5
Streak: 
White
Type Locality: 
Vieille Montagne (Altenberg; Kelmisberg), Moresnet, Kelmis, Plombières-Vieille Montagne District (Plombières-Altenberg), Verviers, Liège Province, Belgium

Zincian Dolomite

Variety Of: 

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Hardness: 
3.5 - 4.0
Formula: 
Ca(Mg,Zn)(CO3)2
Hardness: 
0.0

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