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Phillipsite-K Offretite & Chabazite

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RSL680034

Phillipsite-K Offretite & Chabazite

Classic Locality

Description Tabs

Description
Locality: 
Limberg Quarries, Sasbach am Kaiserstuhl, Freiburg Region, Baden-Württemberg, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.2 × 1.8 cm
Description

Phillipsite-K prismatic crystals with a very aesthetic shapes, also forming globular aggregates, very well defined and transparent. Accompanied by several prismatic offretite and rhombohedral chabazite crystals. Very nice under loupe.

Mineral Data
What's on the rock

Phillipsite-K

Formula: 
(K,Na,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Strunz: 
9.GC.10
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Colour: 
White
Streak: 
White
Type Locality: 
Capo di Bove, Rome Province, Latium, Italy

Offretite

Formula: 
KCaMgAl5Si13O36·16H2O or near
Strunz: 
9.GD.25
Hardness: 
4.0 - 4.5
Type Locality: 
Mont Semiol (Mont Semiouse; Mont Simiouse), Châtelneuf, Saint-Georges-en-Couzan, Loire, Rhône-Alpes, France

Chabazite

Synonym Of: 

Chabazite-Ca

Formula: 
(Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 5.0

Chabazite-K

Formula: 
(K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Mg

Formula: 
(Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24]·10H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 0.0

Chabazite-Na

Formula: 
(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Sr

Formula: 
Sr2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 4.5