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Manganite On Calcite

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Manganite On Calcite

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Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Mixed Specimens
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.1 × 5.8 × 3.7 cm
Weight: 
39.37gr
Description

A deposit of little stellate sprinklings of manganite on calcite. Little white blocks of calcite are deposited both sides on a slightly undulated pancake layer. Then there is a sprinkling of tiny clusters of acicular manganite deposited more on one side than the other.

Mineral Data
What's on the rock

Manganite

Formula: 
Mn3+O(OH)
Strunz: 
4.FD.15
Hardness: 
4.0
Type Locality: 
Manganese deposit, Ilfeld, Nordhausen, Harz, Thuringia, Germany

Calcite

Polymorph of: 
Aragonite and Vaterite
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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