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Rhodochrosite Groutite & Manganoan Calcite

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RAF639710

Rhodochrosite Groutite & Manganoan Calcite

Fluorescent

Description Tabs

Description
Locality: 
NChwaning I Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11.5 × 7 × 6 cm
Largest Crystal: 
0.07cm
Weight: 
545.00gr
Description

Rhodochrosite, groetie covered with blue manganoan calcite from N'Chwaning I Mine. A fabulous specimen in excellent condition.   Fluorescent...

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

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

Manganoan Calcite

Variety Of: 

Calcite

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