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Harmotome

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PCZ600871

Harmotome

Description Tabs

Description
Locality: 
Whitesmith Mine, Strontian, Argyll, Scotland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 2.4 × 2 cm
Description

A nice little specimen with well-formed and lustrous white harmotome crystals on matrix. This is one of the rarest zeolite minerals and the Strontian mines have produced some of the world's best specimens.

Mineral Data
What's on the rock

Harmotome

Formula: 
(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] ·12H2O
Strunz: 
9.GC.10
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany
Peter Crozier Minerals