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Harmotome & Calcite

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WND866699

Harmotome & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Setz Quarry, Idar Oberstein, Hunsrück, Rhineland-Palatinate, Germany
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.7 × 5.1 × 2.9 cm
Description

Here we have a vug, filled with glassy and lustrous Calcite crystals. These are scattered with numerous, multifaceted, sharp and transparent Harmotome. Harmotome is rarer species from the Setz Quarry compared with the usual Calcite and Quartz varieties, and this one is in good condition.

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

Calcite

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

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