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Rhodochrosite With Manganoan Calcite & Groutite

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Rhodochrosite With Manganoan Calcite & Groutite

Classic Locality

Description Tabs

Description
Locality: 
NChwaning I Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
2 × 4.5 × 6 cm
Largest Crystal: 
0.50cm
Weight: 
59.00gr
Description

This a fine rhodochrosite specimen, with blueish manganocalcite and a really nice spread of groutite from N'Chwaning I Mine on the Kalahari Manganese Field, South Africa...

Mineral Data
What's on the rock

Rhodochrosite

Formula: 
MnCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Cavnic Mine (Kapnikbánya), Cavnic (Kapnic; Kapnik), Maramureș Co., Romania

Manganoan Calcite

Variety Of: 

Calcite

Formula: 
CaCO3
Strunz: 
5.AB.05
Hardness: 
3.0
Formula: 
(Ca,Mn)CO3
Hardness: 
0.0

Groutite

Formula: 
Mn3+O(OH)
Strunz: 
4.FD.10
Hardness: 
3.5 - 4.0
Type Locality: 
Sagamore Mangan No. 2 pit, Ironton, Cuyuna North Range, Crow Wing Co., Minnesota, USA