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Shigaite Rhodochrosite & Gageite

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RAF102035

Shigaite Rhodochrosite & Gageite

Rare Mineral

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2 × 1.7 cm
Largest Crystal: 
0.60cm
Description

A very large crystal of shigaite on pink rhodochrosite with some Gageite, that came out from N'Chwaning II Mine. Nice crystal form and colours. This is a very large Shigaite crystal, and as such is very rare. No damage...

Wieght: 6 gr.

Mineral Data
What's on the rock

Shigaite

Formula: 
Mn6Al3(OH)18[Na(H2O)6][SO4]2·6H2O
Strunz: 
7.DD.35
Hardness: 
0.0
Type Locality: 
Ioi mine, Ritto City, Shiga Prefecture, Kinki Region, Honshu Island, Japan

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
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