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Natrolite

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MNT152623

Natrolite

Classic Locality

Description Tabs

Description
Locality: 
Hohentwiel, Singen, Freiburg Region, Baden-Württemberg, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 3.4 × 3 cm
Description

One of the well known german classics: the Hohentwiel phonolite was famous for the orange yellowish to whiteish natrolite occurrences and in old times a lot of specimens have been recovered. Nowadays it is a nature reserve and any digging/collecting is forbidden - since decades. This is a nice example with an open vug hosting some acicular white natrolite crystals on the typical radial orange-brownish aggregates in phonolite.

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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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