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Adularia & Stilbite

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MNT84548

Adularia & Stilbite

Ex Dr F Krantz (Bonn Germany)
Classic Locality

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Description
Locality: 
Rhône Glacier, Furka, Oberwald, Goms, Valais, Switzerland
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.9 × 4.8 × 4.2 cm
Description

Classic from the Alps: glassy lustrous whiteish stacked and mostly twinned adularia crystals with some chlorite dusting and stilbite crystals on top. Old Krantz specimen, labeled to be from the Rhone Glacier.
 

Mineral Data
What's on the rock

Adularia

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic
Hardness: 
6 Ortho - clase

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

Seller Information

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Seller's terms and conditions

Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger

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