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Bellbergite Thomsonite & Ettringite

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ZLT151588

Bellbergite Thomsonite & Ettringite

Type Locality

Description Tabs

Description
Locality: 
Bellerberg, Ettringen, Eifel Mountains, Rhineland-Palatinate, Germany
Size Range: 
Micromount (under 1cm)
Size: 
0.4 × 0.6 × 0.8 cm
Description

Small fraction of a lime xenolith showing a intersting paragenesis of pyramidal bellbergite (left ~0.25 mm) and transparent thomsonite partly covering prismatic white ettringite.

Mineral Data
What's on the rock

Bellbergite

Formula: 
(K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6·30H2O
Strunz: 
9.GD.20
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Seekante, Mayener Feld, Southern lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany

Thomsonite

Synonym Of: 

Thomsonite-Ca

Formula: 
NaCa2[Al5Si5O20]·6H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 5.5

Thomsonite-Sr

Formula: 
Na(Sr,Ca)2[Al5Si5O20]·7H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 0.0

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

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