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Hydrozincite On Tarbuttite On Hetaerolite On Smithsonite

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KMF578830

Hydrozincite On Tarbuttite On Hetaerolite On Smithsonite

Fluorescent

Description Tabs

Description
Locality: 
Skorpion Mine, Rosh Pinah, Oranjemund, Karas Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 5.5 × 2.8 cm
Description

We have decided to break up our considerable Skorpion mine holdings, consistently assembled over the years covering unique combinations from just about every find. Hundreds of specimen will be featured on our upcoming auctions so don’t miss this chance to build yourself a Skorpion mine mineral collection - this locality has not produced anything in the past year or more and may perhaps never do so again. Most of these specimen come from well known personalities in Namibian including Gisela Hinder, Heini Soltau, Nina and Hans Soltau to name a few, the quality is high and consistent so bid with confidence.

This is one of the more dramatic tarbuttite specimen that I have from the skorpion mine featuring a series of partially decayed or rather naturally etched well defined radiating fans the likes of which you will rarely find. The Tarbuttite are not damaged at all but have been eroded away and oxidized revealing some of their former gem green structure in places within their current hollowed out forms. 

One of the crystals is now present only as an empty cast and numerous foundations of former crystal remain visible on the matrix- the crystals have been completely removed etched away by some natural stress. The main crystal measures 2.4cm across and is an exemplary specimen for the species, skorpion mine is considered to the premier locale having produced the finest crystals ever seen.

White chalky hydrozincite coats the tarbuttite making them more striking against the unique grey colored botryoidal matrix that consists of a layer of hetaerolite covering blue smithsonite. Prime features are the good crystal isolation and strange colors. This specimen is so very unusual that what seems like damage is actually not, it is undamaged with many partial crystals present.

 

The Hydrozincite glows green under shortwave UV.

 

 

 

Mineral Data
What's on the rock

Hydrozincite

Formula: 
Zn5(CO3)2(OH)6
Strunz: 
5.BA.15
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Bad Bleiberg, Bleiberg District, Gailtaler Alpen & Karnische Alpen, Carinthia, Austria

Tarbuttite

Formula: 
Zn2(PO4)(OH)
Strunz: 
8.BB.35
Crystal System: 
Triclinic
Hardness: 
3.5
Streak: 
White
Type Locality: 
Kabwe Mine (Broken Hill Mine), Kabwe (Broken Hill), Kabwe District, Central Province, Zambia

Hetaerolite

Formula: 
ZnMn2O4
Strunz: 
4.BB.10
Hardness: 
6.0
Colour: 
Black
Type Locality: 
Passaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

Smithsonite

Formula: 
ZnCO3
Strunz: 
5.AB.05
Hardness: 
4.0 - 4.5
Streak: 
White

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