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Alunogen : Al2(SO4)3·17H2O | |
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Almyras, Agia Varvara, Cyprus Alunogen. Specimen is from the J.L.Bruce collection of the California Institute of Technology, Padadena, California #335. Label said Cyprus mine. Scale at bottom of image is an inch with a rule at one cm. |
| Photo ID: 217126 View Count: 60 | |
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Le Gua, Aubin, Decazeville coal basin, Decazeville, Aveyron, Midi-Pyrénées, France Picture width is 4mm; clear crystals of Alunogen. |
| © Elmar Lackner | Photo ID: 73444 View Count: 632 |
Alunogen : Al2(SO4)3·17H2O | |
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Saint-Georges-de-Lusançon, Millau, Aveyron, Midi-Pyrénées, France Alunogen Field of view 10 mm Photo and collection Patrice Queneau |
| © P.Queneau | Photo ID: 171189 View Count: 133 |
Alunogen : Al2(SO4)3·17H2O | |
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Anna Mine, Alsdorf, Aachen, North Rhine-Westphalia, Germany specimen size = 8 cm |
| © Frank de Wit | Photo ID: 10595 View Count: 1064 |
Alunogen : Al2(SO4)3·17H2O | |
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Carola Mine, Freital, Dresden, Saxony, Germany White crystals of alunogen. Picture size 5.5 mm. Photographer and collection Thomas Witzke. |
| © Thomas Witzke | Photo ID: 11483 View Count: 765 |
Alunogen : Al2(SO4)3·17H2O | |
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Willi Agatz Mine, Dresden, Saxony, Germany Colourless blades of alunogen. Picture size 2 mm. Photographer and collection Thomas Witzke. |
| © Thomas Witzke | Photo ID: 11419 View Count: 712 |
Alunogen : Al2(SO4)3·17H2O, Jarosite : KFe3+ 3[(OH)3|SO4]2 | |
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Ronneburg U deposit, Gera, Thuringia, Germany Colourless to white tabular crystals of alunogen on jarosite. Picture size 5 mm. Photographer and collection Thomas Witzke. |
| © Thomas Witzke | Photo ID: 10667 View Count: 830 |
Alunogen : Al2(SO4)3·17H2O | |
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Tongariro, North Island, New Zealand Width of field is 2.5 mm. Collection of Jesse Crawford. The depth of field has been enhanced using Helicon Focus (5 exposures). Equipment: Nikon D-100 digital camera on a homemade microscope. |
| © 2008 Jesse Crawford | Photo ID: 178135 View Count: 99 |
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Skalny dump, Łaziska, Katowice area, Upper Silesian Coal Basin, Upper Silesia (Śląskie), Poland Sprays of Fe-bearing alunogen formed in cause of a coal-dump fire. Field of view is a bit over 5 mm. |
| © L Kruszewski 2007 | Photo ID: 91513 View Count: 261 |
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Skalny dump, Łaziska, Katowice area, Upper Silesian Coal Basin, Upper Silesia (Śląskie), Poland Sprays and single needles of Fe-bearing alunogen. Photo taken at the Scanning Electron Microscopy and Microanalysis Laboratory of the Faculty of Geology, Warsaw University, Poland. |
| © L Kruszewski | Photo ID: 86763 View Count: 226 |
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