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Fahleite In Gypsum

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SKY830437

Fahleite In Gypsum

Type Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.15 × 0.1 × 0.1 cm
Description

TWO very small specimens of scaly yellow microcrystals of fahleite on a matrix of colorless transparent gypsum from the type locality in Tsumeb.

These fahleite specimens are of the type used for the type description of the species, very different from the much more common and new green ones.

Fahleite of this kind is very rarely seen in the mineral market, don't miss the opportunity get this very sought after species ! No duplicates available.

Fahleite (a Zn-Ca-Fe arsenate) is an extremely rare Tsumeb mineral only known from this locality worldwide, which is of course the type locality. 

The species was labeled as RRR! in Gebhard Tsumeb II book (single specimen !). 

Ex Vandenbroucke Museum collection from Waregem, Belgium.

Mineral Data
What's on the rock

Fahleite

Formula: 
Zn5CaFe2(AsO4)6·14H2O
Strunz: 
8.CH.55
Crystal System: 
Orthorhombic
Hardness: 
2.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.
Not Sold

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