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Gerdtremmelite

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SKY969715

Gerdtremmelite

Type Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.2 × 0.2 × 0.1 cm
Description

Gerdtremmelite occurs in this specimen as perfect typical brown balls on a little piece of matrix. 

Gerdtremmelite is an extremely rare mineral from Tsumeb!

Gerdtremmelite, that is only known from this locality worldwide, was labeled as "RRR: extremely rare: single occurrence with less than 10 specimens known" and "brown aggregates of minute crystals on the type specimen" in G.Gebhard Tsumeb II book (1999) when the mine was already closed (1996), so new discoveries will not take place in the future .

This sample was in Gebhard collection and it's part of the type specimen, as proved by the copy of the label enclosed that will be sent to the buyer. Second oxidation zone.

Don't miss the opportunity to get this extreme rarity and very sought after mineral from Tsumeb !

Mineral Data
What's on the rock

Gerdtremmelite

Formula: 
(Zn,Fe)(Al,Fe)2(AsO4)(OH)5
Strunz: 
8.BE.40
Hardness: 
0.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

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