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Harmotome

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WND796157

Harmotome

Type Locality
Classic Locality

Description Tabs

Description
Locality: 
Samson Mine, St Andreasberg, Goslar, Lower Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.1 × 3.9 × 2.1 cm
Description

A fine and typical specimen covered with plenty of pale grey-white crystals of harmotome. They are well defined, high lustrous and rich of faces. A very good specimen from the type locality.

Very hard to produce a good picture.

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
Wendel Minerals

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