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Minrecordite & Otavite

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JYJ803230

Minrecordite & Otavite

SEM-EDS & Raman no 445

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 2.5 × 2.3 cm
Description

Colourless otavite coated by a second layer of minrecordite on smithsonite. Other minerals associated are dufite and rosasite. 

Several broken crystals have been examined in backscatter mode in the SEM. The core is a smithsonite crystal, followed by second pure otavite generation and a third also Raman confirmed minrecordite layer with (Zn,Mg)1(Ca,Cd1), with respect to their ionic radius. 

Analytical data in the analysis section. 

 

Mineral Data
What's on the rock

Minrecordite

Formula: 
CaZn(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Otavite

Formula: 
CdCO3
Strunz: 
5.AB.05
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia
Analysis
Analysis Report - only: Minrecordite & Otavite
Analysis Report - only: Minrecordite & Otavite
Analysis Report - only: Minrecordite & Otavite
Analysis Report - only: Minrecordite & Otavite