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Shigaite from
N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa


09195090017271951649864.jpg
Shigaite

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
06022020017866614878178.jpg
Shigaite, etc.

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
03430490017271987238715.jpg
Shigaite

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
09234870017271987231846.jpg
Shigaite, etc.

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
02107230017864965792402.jpg
Shigaite

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
06022020017866614878178.jpg
Shigaite, etc.

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
03806380017362510201893.jpg
Shigaite

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
07121320017362510204317.jpg
Shigaite, etc.

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
09195090017271951649864.jpg
Shigaite

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
07577420017271951638866.jpg
Shigaite, etc.

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
03430490017271987238715.jpg
Shigaite

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
09234870017271987231846.jpg
Shigaite, etc.

N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
Locality type:Mine
Classification
Species:Shigaite
Formula:Mn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O
Comments:Crystal size is from less than 1 mm to 3.2 cm across
Habit:Hexagonal, tabular crystals
Colour:Pale yellow to burnt orange, brown, and amber-red
Quality for species:Excellent - world class for species or very significant. (!!)
Abundance at site:Rare
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Rhodochrosite128
Pyrochroite19
Baryte18
Calcite7
- var Manganese-bearing Calcite1
Caryopilite5
Gageite4
Waterhouseite2
Gatehouseite2
Data
Mineral Data:Click here to view Shigaite data
Locality Data:Click here to view N'Chwaning I Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
Photo GalleryView Gallery (83 photos)
Data Identifiers
Mindat Occurrence Record ID:509796
Long-form Identifier:1:3:509796:8
GUID (UUID V4):0
Nearest other occurrences of Shigaite
0.6km (0.3 miles) ⓘN'Chwaning II Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
1.2km (0.8 miles) ⓘN'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
2.9km (1.8 miles) ⓘWessels Mine, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
References
Cairncross, B., Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa. p.1-290.
Gutzmer, J. (1996). Genesis and alteration of the Kalahari and Postmasburg manganese deposits, Griqualand West, South Africa (Doctoral dissertation, Rand Afrikaans University).
Cairncross, Bruce, Balayer, P., Bruce,, , (2007) Neufund: Shigait aus den Kalahari-Manganfeldern, SÞdafrika. Lapis, 32 (4) 23-26
Cairncross, Bruce, Beukes, Nicolas J. (2013) The Kalahari Manganese Field: The Adventure Continues. Struik Nature.
Cairncross, Bruce (2016) Connoisseur's Choice: Shigaite, Kalahari Manganese Field, Northern Cape Province, South Africa. Rocks & Minerals, 91 (2) 150-153 doi:10.1080/00357529.2016.1113466
 
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