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Feldspar Psm Laumontite

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NST615282

Feldspar Psm Laumontite

Pseudomorph

Description Tabs

Description
Locality: 
Seelbach, Herborn, Lahn-Dill, Giessen Region, Hesse, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 4.2 × 3 cm
Description

Typical pseudomorph of K feldspar after laumontite from Bornberg Quarry with minor calcite on diabase matrix.

Mineral Data
What's on the rock

Feldspar

Group Parent: 
Feldspar Group

Laumontite

Formula: 
CaAl2Si4O12·4H2O
Strunz: 
9.GB.10
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Huelgoat (Locmaria-Berrien), Finistère, Brittany, France