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Riebeckite (Var: Crocidolite) : [ ][Na2][Fe2+3Fe3+2][(OH)2|Si8O22] | |
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Dales Georges member Fe-formation, Wittenoom (Wittenoom Gorge; "Wittenoon Gorge"), Pilbara Region, Western Australia, Australia Crocidolite collected from roadside in Dale's Gorge in Nov 1970. FOV is 5cm. Fibres separating from massive crocidolite. |
| Photo ID: 198392 View Count: 151 | |
Riebeckite (Var: Crocidolite) : [ ][Na2][Fe2+3Fe3+2][(OH)2|Si8O22] | |
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Filadelfia Mine, Alto Chapare District, Chapare Province, Cochabamba Department, Bolivia Fibrous blue crocidolite. Harvard Mineralogical Museum, no. 112670. |
| © 2008 Peter Cristofono | Photo ID: 159906 View Count: 262 |
Riebeckite (Var: Crocidolite) : [ ][Na2][Fe2+3Fe3+2][(OH)2|Si8O22] | |
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Filadelfia Mine, Alto Chapare District, Chapare Province, Cochabamba Department, Bolivia Width of field is 5.4 mm. Collection and photo Jesse Crawford. Composit photo using CombineZP. Equipment Nikon D-100 digital camera on a homemade microscope. Fibrous riebeckite. It looks a little dangerous doesn't it? |
| © 2008 Jesse Crawford | Photo ID: 230710 View Count: 35 |
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Griqualand, Northern Cape Province, South Africa A curious example of Crocidolite (also known as "Blue Asbestos") from South Africa, this specimen consists of a sharp, blocky group of Crocidolite crystals in minor association with Pyrite. The crystal is dark blue and exhibits a sharp "cat's eye" effect. Specimen size is 5.2cm x 3.2cm x 2.9cm. |
| © Jasun McAvoy | Photo ID: 260660 View Count: 30 |
Riebeckite (Var: Crocidolite) : [ ][Na2][Fe2+3Fe3+2][(OH)2|Si8O22] | |
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Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa Fibres length: 5 cm. Currently in J. Parafiniuk collection. |
| © J. Witkowski | Photo ID: 37308 View Count: 607 |
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Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa Crocidolite. Specimen size 5,5x2,5cm. Photo and Collection; Jorge M. Alves. |
| © Jorge M. Alves | Photo ID: 82372 View Count: 218 |
Riebeckite (Var: Crocidolite) : [ ][Na2][Fe2+3Fe3+2][(OH)2|Si8O22] | |
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Prieska District, Namaqualand, Northern Cape Province, South Africa 7.6 x 3.9 x 2.8 cm. Crocidolite is a form of riebeckite [Na2][Fe2+3Fe3+][(OH)2|Si8O22], which is easily apparent when you see the specimens densely-packed hair-like fibers. This variety is often called "blue asbestos" due to its deep blue-black color. This is an old-time piece from mining in South Africa. Fortunately, it was not used much ... |
| © Rob Lavinsky | Photo ID: 210685 View Count: 84 |
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Prieska District, Namaqualand, Northern Cape Province, South Africa A rich mat of gray-blue Crocidolite fibers. FOV is 3 cm. Photo and collection of Lee Johnson. |
| © Lee Johnson | Photo ID: 239210 View Count: 22 |
Riebeckite (Var: Crocidolite) : [ ][Na2][Fe2+3Fe3+2][(OH)2|Si8O22] | |
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Transvaal, South Africa Overall size 9 x 4,5 x 2,5 cm - Field of view 4 cm - Photo by Stefanie Menig |
| © 2005 - S.Menig | Photo ID: 35193 View Count: 494 |
Riebeckite (Var: Crocidolite) : [ ][Na2][Fe2+3Fe3+2][(OH)2|Si8O22] | |
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Blackburn Circle area, Gloucester, Essex Co., Massachusetts, USA Blue fibrous riebeckite variety crocidolite. View is about 2 mm across. P. Cristofono specimen and photo, field collected 2009. |
| © 2009 Peter Cristofono | Photo ID: 235585 View Count: 38 |
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