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Osmium (Var: Iridosmine) : (Os,Ir), Tulameenite : Pt2CuFe, Chromite-Magnesiochromite Series | |
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Jerusalem Creek, Woodburn, Fifield, Cunningham Co., New South Wales, Australia SEM image of surface of tulameenite micronugget from picture #158731. We see scratched surface of medium-grey in BSE tulameenite with more bright V-shape inclusion of intergrown tabular crystals of iridosmine with composition (Os.49Ir.45Ru.05Rh.01). The later is much more harder of malleable tulameenite matrix and has positive relief. Dark-grey ... |
| © Pavel M. Kartashov | Photo ID: 158735 View Count: 205 |
Osmium : (Os,Ir,Ru), Iridium : (Ir,Os,Ru), Rutheniridosmine : (Ir,Os,Ru), Iridium (Var: Osmiridium) : (Ir,Os,Ru), Osmium (Var: Iridosmine) : (Os,Ir) | |
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Adamsfield, Tasmania, Australia Alluvial grains of "osmiridium" (mostly osmium), probably mined in the 1950's. There is 1g of the metal with about 100 grains from about 0.5-2mm in size, some with crystal forms; the circle is 10 mm diameter. |
| © Ralph Bottrill | Photo ID: 84781 View Count: 533 |
Osmium (Var: Iridosmine) : (Os,Ir) | |
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Tumet river, Assosa region, Wallaga (Welega; Wollega; Ouallega) Province, Ethiopia SEM image. Typical hexagonal tabular crystal of osmium with composition Os.58Ir.42 - according to L. Cabri classification it had belong to iridosmine field, but according to 50% rule, accepted by IMA, it is osmium now. The crystal is composed by hexagonal prisme, two hexagonal dipyramides and pinacoids. Note zone of the crystal enriched with ... |
| © Pavel M. Kartashov | Photo ID: 138661 View Count: 369 |
Osmium : (Os,Ir,Ru) | |
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Urals Region, Russia An irregular-shaped fragment of native osmium, 3 mm long. It is thought to be collected at a placer somewhere near Nizhnii Tagil. EDS analyzis showed Os>Ir>Ru, which discludes naming this one 'rutheniridosmine' (as it was named while obtaining). |
| © L Kruszewski 2006 | Photo ID: 67877 View Count: 406 |
Osmium : (Os,Ir,Ru) | |
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Urals Region, Russia Harvard Museum of Natural History specimen no. 95546. Label is about 5.5 cm long. P. Cristofono photo. |
| © 2007 Peter Cristofono | Photo ID: 94789 View Count: 291 |
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Ekaterinburgskaya (Sverdlovskaya) Oblast', Middle Urals, Urals Region, Russia These crystals were obtained in an old collection and were labeled as "Iridosmine (Rutheniridosmine)" but the current nomenclature is Osmium - a rare combination of Osmium, Iridium, and Ruthenium. These 3 specimens consist of thin, brilliantly metallic crystals that range in size from 2mm to 2.85mm. |
| © Jasun McAvoy | Photo ID: 260198 View Count: 33 |
Osmium : (Os,Ir,Ru) | |
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Mednorudyanskoye Cu Deposit, Nizhnii Tagil, Ekaterinburgskaya (Sverdlovskaya) Oblast', Middle Urals, Urals Region, Russia 0.2mm osmium crystal from a placer |
| © Maurice de Graaf | Photo ID: 23573 View Count: 1947 |
Osmium (Var: Iridosmine) : (Os,Ir) | |
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Mednorudyanskoye Cu Deposit, Nizhnii Tagil, Ekaterinburgskaya (Sverdlovskaya) Oblast', Middle Urals, Urals Region, Russia Width of field is 0.5 mm. Collection of Jesse Crawford. The depth of field is enhanced using Helicon Focus (23 exposures) Equipment: Nikon D-100 on a homemade microscope. |
| © 2008 Jesse Crawford | Photo ID: 174996 View Count: 160 |
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Neiva River, Sysert' district, Ekaterinburgskaya (Sverdlovskaya) Oblast', Middle Urals, Urals Region, Russia 0.8x0.6x0.3 mm hexagonal dipyramidal-pinakoidal crystal of osmium with very widespread composition (Os.51Ir.42Ru.07) - according to L. Cabri classification it had belong to iridosmine compositional field, but according to 50% rule, accepted by IMA, it is osmium now. The crystal is composed by hexagonal dipyramide and pinacoids. Note skeletoidal ... |
| © Pavel M. Kartashov | Photo ID: 167478 View Count: 468 |
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