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Rhodochrosite Gageite & Groutite

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Rhodochrosite Gageite & Groutite

Classic Locality

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 5 × 2 cm
Largest Crystal: 
0.03cm
Weight: 
35.00gr
Description

A rhodocrosite casting with gageite and groutite.  These castings are rare...

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

Gageite

Formula: 
Mn21(Si4O12)2O3(OH)20
Strunz: 
9.DH.35
Crystal System: 
Triclinic Monoclinic
Hardness: 
3.0
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

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
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