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Apophyllite Natrolite & Calcite

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Apophyllite Natrolite & Calcite

Description Tabs

Description
Locality: 
Bötzingen, Freiburg Region, Baden-Württemberg, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 3.5 × 1.5 cm
Description

Nice combination of Apophyllite on Natrolite and Calcite from the Hauri quarry in the Kaisertuhl volcanic complex. Very photogenic specimen (please forgive my poor photo skills).

Mineral Data
What's on the rock

Apophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,F)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Natrolite

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
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 10 days. After receipt, I will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions please feel free to contact me. Best regards Crystallum