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Stilbite

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SKI585088

Stilbite

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Description
Locality: 
Oberbaumühle, Windischeschenbach, Bavaria, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.5 × 2.2 cm
Largest Crystal: 
1.50cm
Description

Oberbaumühle quarry is a quarry in amphibolite with aplite and pegmatite veins. Intense yellow stilbite in cm sized crystals from there is scarce. This is an excellent example for the locality and comes together with a handwritten label of a local collector.

The quarry is in directly neighborhood to where the German Continental Deep Drilling Programme took place. A scientific borehole drilling project carried out from 1987 to 1995 near Windischeschenbach which reached a depth of 9101 metres in Earth's continental crust.

Mineral Data
What's on the rock

Stilbite

Synonym Of: 

Stilbite-Ca

Formula: 
NaCa4[Al9Si27O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0

Stilbite-Na

Formula: 
(Na,Ca,K)6-7[Al8Si28O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0
Hardness: 
3.5 - 4
Colour: 
White
Streak: 
White

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