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Calcite Mesolite & Fluorapophyllite

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BSM160408

Calcite Mesolite & Fluorapophyllite

ex Pearl Freeman Collection #X577

Description Tabs

Description
Locality: 
Palabora Mine, Loolekop, Phalaborwa, Limpopo Province, South Africa
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 6.5 × 4.2 cm
Description

 A bed of pale green prehnite gives way to a layer of colourless fluor-apophyllite over which is scattered white crystals of mesolite and a few almost colourless calcite crystals to 2.1cms on edge.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Mesolite

Formula: 
Na2Ca2Si9Al6O30·8H2O
Strunz: 
9.GA.05
Hardness: 
5.0

Fluorapophyllite

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
Provenance

Pearl Freeman Collection

Wed, 2015-07-22 22:52 -- admin
Some History
Dates: 
Post War- 
2011
Type: 
Collector/Collection
Specialisms: 
Baryte, United Kingdom, Peru, Sulphides
About

Pearl and her husband Sid were enthusiastic mineral collectors for several decades; Pearl was also long time treasurer of the British...

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