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Cotunnite & Dioptase

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JYJ690268

Cotunnite & Dioptase

New Discovery

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 0.8 × 0.6 cm
Description

This is a very rare new mineral for Tsumeb: Cotunite on duftite associated with zincian dolomite and minor dioptase.

The mineral was identified by Raman & SEM-EDS.

Analysis in corresponding section.

Mineral Data
What's on the rock

Cotunnite

Formula: 
PbCl2
Strunz: 
3.DC.85
Hardness: 
1.5 - 2.0
Type Locality: 
Mt Vesuvius, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Dioptase

Formula: 
CuSiO3·H2O
Strunz: 
9.CJ.30
Crystal System: 
Trigonal
Hardness: 
5.0
Streak: 
Green
Type Locality: 
Altyn-Tyube dioptase deposit (Altyn-Tube), Altyn-Tyube area, Kirghiz Steppes (Asiatic Steppes), Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan...
Analysis
Analysis Report - only: Cotunnite & Dioptase
Analysis Report - only: Cotunnite & Dioptase
Analysis Report - only: Cotunnite & Dioptase