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Natrolite & Psm

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Natrolite & Psm

Type Locality

Description Tabs

Description
Locality: 
Hohentwiel, Singen, Freiburg Region, Baden-Württemberg, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
12.8 × 9.2 × 5.7 cm
Description

A very nice, partly cut and polished specimen of orange-brown, radiating natrolite aggregates (type locality!) with a dark brown, elongated crystal embedded - surely a pseudomorph (nepheline - augite?). The top shows the uncut crystal surfaces of the radiating botryoidal aggregates.

Mineral Data
What's on the rock

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany

Seller Information

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