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Metanováčekite Tourmaline & Topaz

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ERO1023744

Metanováčekite Tourmaline & Topaz

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 2.6 × 1.8 cm
Weight: 
20.00gr
Description

Black tourmaline with Metanováčekite and topaz. Specimen much better in person. There are small dinks on tourmalines - hard to see them.

(37280)

Mineral Data
What's on the rock

Metanováčekite

Formula: 
Mg(UO2)2(AsO4)2·4-8H2O
Strunz: 
8.EB.10
Hardness: 
2.5
Colour: 
yellow
Type Locality: 
Anton Mine (St. Anton Mine), Heubach Valley, Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White

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$40
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Shipping Information

Postage Area Price
outside EU
$11
Priority Post
$11
Poland
$5