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Hemimorphite On Hydrozincite On Tarbuttite Cast

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KMF587065

Hemimorphite On Hydrozincite On Tarbuttite Cast

Classic Locality

Description Tabs

Description
Locality: 
Skorpion Mine, Rosh Pinah, Oranjemund, Karas Region, Namibia
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 6.5 × 3.2 cm
Description

A rare tarbuttite cast specimen consistin solely of tarbuttite lined externally with a thin black hetaerolite mineralization on the pitted underside as well as a thin white dusting of hydrozincite on the upper display surface. 

Micro hemimorphite crystals appear in some areas on the hydrozincite, their sparkle gives them away immediately.

Cleaved tarbuttite crystals omit a lively pearlescent luster.

 

 

Mineral Data
What's on the rock

Hemimorphite

Formula: 
Zn4Si2O7(OH)2·H2O
Strunz: 
9.BD.10
Hardness: 
4.5 - 5.0
Streak: 
White
Type Locality: 
Băiţa Mining District (Baita Bihor; Rézbánya), Nucet, Bihor Co., Romania

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

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