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Genthelvite

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PMN756609

Genthelvite

Description Tabs

Description
Locality: 
Huanggang Mine, Hexigten Banner, Chifeng City, Inner Mongolia, China (Peoples Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3 × 3 cm
Largest Crystal: 
3.00cm
Weight: 
20.00gr
Description

Large (for the species) genthelvite of a dark brown variety - pocked by little balls of a to me unknown species (looks like goethite). Nice small cluster with sharp edges and good lustre. Note since the remarkable finds in this mine years ago, these have not appeared on the market any more.

Mineral Data
What's on the rock

Genthelvite

Formula: 
Zn4(Be3Si3O12)S
Strunz: 
9.FB.10
Hardness: 
6.0 - 6.5
Type Locality: 
West Cheyenne Canon, Cheyenne District (St. Peters Dome District), El Paso Co., Colorado, USA