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Natrolite & Calcite Psm Wood

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PDM871185

Natrolite & Calcite Psm Wood

Pseudomorph

Description Tabs

Description
Locality: 
Sipi Caves, Mount Elgon, Manafwa District, Eastern Region, Uganda
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 4.1 × 2.8 cm
Weight: 
40.00gr
Description

A branch of wood replaced by caramel brown calcite and white natrolite. This is a nice geode-like cavity, richly lined with contrasting natrolite needles on calcite rhombohedra.

Found in 02/2012 at the Mount Elgon (a remote locality in Uganda) by the Dutch collector Bert Biemold.

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

Calcite

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

Wood

Variety Of: 

Plant

Seller Information

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