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Andradite : Ca3Fe3+2[SiO4]3, Hematite : Fe2O3 | |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa This specimen is just so beautiful and uncommon - sparkly maroon crystals of andradite on euhedral crystals of hematite. Even if you collect N''Chwaning stuff, I doubt you have one of these. 3.2 x 3 x 2.8 cm |
| © Rob Lavinsky | Photo ID: 23827 View Count: 477 |
Andradite : Ca3Fe3+2[SiO4]3, Bementite : Mn5Si4O10(OH)6 | |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa Rhombododecahedral andradite garnets with variously intense color, and white bementite (according to the label) present as aggregates of microscopic hexagonal platelets. Image is 5 mm wide. Acquired in 2007. Photo & collection: D. Schläfli keywords: hires |
| © 2007 D. Schläfli | Photo ID: 132904 View Count: 177 |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa Dark red Andradite Garnets cover 3 sides of the matrix, crystals are translucent. The side edge looks damaged this is fans/sprays of Celestine. Measures 6cm x 5cm x 3.5cm Dealer: Margarete Burke, collection of Debbie Woolf |
| © Debbie Woolf | Photo ID: 170839 View Count: 121 |
Apophyllite-(KOH) : KCa4[(OH,F)|Si8O20] · 8H2O | |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa Hydroxyapophyllite from N'chwaning II Mine, Kuruman, Kalahari The N'Chwaning Mine is famous for its fine Rhodos but it also produces curious Hydroxyapophyllites which are totally different from the Indian ones or any others for that matter. This esthetic group perched on its matrix displays very well due the extremely aerial position of the ... |
| © fabreminerals.com | Photo ID: 55628 View Count: 284 |
Apophyllite-(KOH) : KCa4[(OH,F)|Si8O20] · 8H2O | |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa The N'Chwaning Mine is famous for its world-class Rhodochrosite crystals. What most people don't know is that it also produces the somewhat rare mineral Hydroxyapophyllite. This specimen features crystals measuring to 1 cm. in size. The crystals on this specimen exhibit an almost pearly lustre. specimen size = 7 x 3 x 3.4 cm. |
| © Russell G. Rizzo | Photo ID: 114312 View Count: 102 |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa A beautiful group of lustrous apophyllite crystals on drusy calcite. Individual crystals are 10mm x 6mm to 7 mm. Overall size of the specimen is 67mm x 35mm x 42mm. Paul Nicholson collection and photo. |
| © Paul Nicholson | Photo ID: 244878 View Count: 28 |
Apophyllite-(KOH) : KCa4[(OH,F)|Si8O20] · 8H2O | |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa The N'Chwaning Mine is famous for its world-class Rhodochrosite crystals. What most people don't know is that it also produces the somewhat rare mineral Hydroxyapophyllite. This specimen features crystals measuring to 1 cm. in size. The crystals on this specimen exhibit an almost pearly lustre. specimen size = 8 x 7 x 4.5 cm. |
| © Russell G. Rizzo | Photo ID: 235967 View Count: 17 |
Baryte : BaSO4, Pyrite : FeS2 | |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa A 8 cm specimen with Baryte crystals and Pyrite crystals at the base from N'Chwaning II mine, Kalhari, South Africa. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 142567 View Count: 164 |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa A beautiful group of translucent white barite crystals dominated by a large single crystal measuring 20mm across. The overall size of the specimen is 90mm x 40mm x 35mm. Paul Nicholson collection and photo. |
| © Paul Nicholson | Photo ID: 248236 View Count: 25 |
Bixbyite : (Mn3+,Fe3+)2O3, Baryte : BaSO4, Calcite : CaCO3 | |
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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa Black highly lustrous cubes of Bixbyite to 1mm in Manganese matrix with Baryte & Calcite with a pale blue tinge. Measures 4cm x 3.5cm x 3cm. Woolf Collection |
| © Debbie Woolf | Photo ID: 211466 View Count: 78 |
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