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Harmotome

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SYA1048919

Harmotome

Classic Locality

Description Tabs

Description
Locality: 
Strontian, Highland, Scotland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 3.5 × 2.3 cm
Largest Crystal: 
1.50cm
Description

Sharp lustrous blocky crystals of white harmotome to 1.5 cm on calcite. 

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

Seller Information

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