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Prehnite With Apophyllite

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BFM807545

Prehnite With Apophyllite

Pseudomorph

Description Tabs

Description
Locality: 
Jalgoan Quarries, Maharashtra, India
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.8 × 6.7 × 2 cm
Description

A very nice perimorph. 

Prehnite crystals were growing either on Mesolite or Scolecite.

After the weathering of Mesolite or Scolecite, the "hollow" backsite was left, which you can see on 2nd photo.

Also a sharp terminated Apophyllite crystal is grown on the Prehnite.

Mineral Data
What's on the rock

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa

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

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.

If you have any questions please feel free to contact me.

Best regards Matthias


 

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