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Thaumasite With Ettringite Inclusions

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PJM78781

Thaumasite With Ettringite Inclusions

Ex J & S Mommers Collection

Description Tabs

Description
Locality: 
NChwaning Mines, Kuruman, Northern Cape Province, South Africa
Size Range: 
Small miniature (3-4.5 cm)
Size: 
1.6 × 3.5 × 2.3 cm
Description

A super specimen with ettringite included thaumasite crystals, off matrix, from a surprising and small find of late 2005. These are the best seen in 20 years, their lemon yellow colour due to the ettringite

 

Mineral Data
What's on the rock

Thaumasite

Formula: 
Ca3(SO4)[Si(OH)6](CO3)·12H2O
Strunz: 
7.DG.15
Hardness: 
3.5
Streak: 
White
Type Locality: 
Bjelke Mines, Åreskutan, Åre, Jämtland, Sweden

Ettringite

Formula: 
Ca6Al2(SO4)3(OH)12·26H2O
Strunz: 
7.DG.15
Hardness: 
2.0 - 2.5
Type Locality: 
Ettringer Feld, Western lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany
Earthstones Australia

Seller Information

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