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Natrolite & Calcite On Fossil Wood

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PCZ641709

Natrolite & Calcite On Fossil Wood

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: 
4.7 × 2.8 × 1.7 cm
Description

A rare specimen from Uganda  with natrolite on petrified wood, a very uncommon paragenese. The natrolite needles contrast well with the beautiful honeycoloured calcite crystals on which they rest.   An attractive and very unusual specimen.

 

 

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

Peter Crozier Minerals