TOMAMAEITE Cu3 Pt IN NATIVE OSMIUM FROM RIVER SEDIMENTS IN THE NIZHNIE SERGI REGION, CENTRAL URALS
The article is devoted to tomamaeite Cu3 Pt from inclusions in a native osmium grain from alluvial river sediments in the Nizhnie Sergi region, Sverdlovsk oblast. It is the fourth finding of this mineral in the Urals. In addition to tomamaeite, native osmium Os0.36Ir0.33Ru0.31 contains the inclusion...
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South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2022-06-01
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| Series: | Минералогия |
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| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2022/06/2022_8_2_1.pdf |
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| author | V.V. Sharygin I.G. Mikhailov |
| author_facet | V.V. Sharygin I.G. Mikhailov |
| author_sort | V.V. Sharygin |
| collection | DOAJ |
| description | The article is devoted to tomamaeite Cu3 Pt from inclusions in a native osmium grain from alluvial river sediments in the Nizhnie Sergi region, Sverdlovsk oblast. It is the fourth finding of this mineral in the Urals. In addition to tomamaeite, native osmium Os0.36Ir0.33Ru0.31 contains the inclusions of digenite (or, possibly, roxbyite), millerite, Fe-Ni-Pt alloy, an unidentified Pd mineral, magnesiohornblendite, and lowCa pyroxene. In composition, tomamaeite is close to the ideal formula Cu3 Pt and contains minor amounts of (wt. %) Pd (up to 2.0), Ir (up to 1.7), Ru and Ni (up to 0.6), and Fe (up to 0.2). In addition to native osmium, two grains of native ruthenium Ru0.54Os0.23Ir0.23 and Ru0.40Os0.31Ir0.29 are found in sediments. Our data suggest that the PGE minerals in river sediments could be sourced from mafic-ultramafic massifs located in the Nizhnie Sergi area. The formation of tomamaeite and coexisted minerals is related to the process of postmagmatic transformation of the primary PGE mineral assemblage, probably, during serpentinization of ultramafic rocks. |
| format | Article |
| id | doaj-art-083f2a2dfeb74927a4f3481e98926d0e |
| institution | Kabale University |
| issn | 2313-545X 2782-2044 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | South Urals Federal Research Center of Mineralogy and Geoecology UB RAS |
| record_format | Article |
| series | Минералогия |
| spelling | doaj-art-083f2a2dfeb74927a4f3481e98926d0e2025-02-11T04:03:57ZengSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASМинералогия2313-545X2782-20442022-06-018251410.35597/2313-545X-2022-8-2-1TOMAMAEITE Cu3 Pt IN NATIVE OSMIUM FROM RIVER SEDIMENTS IN THE NIZHNIE SERGI REGION, CENTRAL URALSV.V. Sharygin0I.G. Mikhailov1Institute of Geology and Mineralogy SB RAS OOO NTPP «Geopoisk»The article is devoted to tomamaeite Cu3 Pt from inclusions in a native osmium grain from alluvial river sediments in the Nizhnie Sergi region, Sverdlovsk oblast. It is the fourth finding of this mineral in the Urals. In addition to tomamaeite, native osmium Os0.36Ir0.33Ru0.31 contains the inclusions of digenite (or, possibly, roxbyite), millerite, Fe-Ni-Pt alloy, an unidentified Pd mineral, magnesiohornblendite, and lowCa pyroxene. In composition, tomamaeite is close to the ideal formula Cu3 Pt and contains minor amounts of (wt. %) Pd (up to 2.0), Ir (up to 1.7), Ru and Ni (up to 0.6), and Fe (up to 0.2). In addition to native osmium, two grains of native ruthenium Ru0.54Os0.23Ir0.23 and Ru0.40Os0.31Ir0.29 are found in sediments. Our data suggest that the PGE minerals in river sediments could be sourced from mafic-ultramafic massifs located in the Nizhnie Sergi area. The formation of tomamaeite and coexisted minerals is related to the process of postmagmatic transformation of the primary PGE mineral assemblage, probably, during serpentinization of ultramafic rocks.https://journal.mineralogy.ru/wp-content/uploads/2022/06/2022_8_2_1.pdftomamaeitenative osmiumnizhnie sergi regioncentral urals |
| spellingShingle | V.V. Sharygin I.G. Mikhailov TOMAMAEITE Cu3 Pt IN NATIVE OSMIUM FROM RIVER SEDIMENTS IN THE NIZHNIE SERGI REGION, CENTRAL URALS Минералогия tomamaeite native osmium nizhnie sergi region central urals |
| title | TOMAMAEITE Cu3 Pt IN NATIVE OSMIUM FROM RIVER SEDIMENTS IN THE NIZHNIE SERGI REGION, CENTRAL URALS |
| title_full | TOMAMAEITE Cu3 Pt IN NATIVE OSMIUM FROM RIVER SEDIMENTS IN THE NIZHNIE SERGI REGION, CENTRAL URALS |
| title_fullStr | TOMAMAEITE Cu3 Pt IN NATIVE OSMIUM FROM RIVER SEDIMENTS IN THE NIZHNIE SERGI REGION, CENTRAL URALS |
| title_full_unstemmed | TOMAMAEITE Cu3 Pt IN NATIVE OSMIUM FROM RIVER SEDIMENTS IN THE NIZHNIE SERGI REGION, CENTRAL URALS |
| title_short | TOMAMAEITE Cu3 Pt IN NATIVE OSMIUM FROM RIVER SEDIMENTS IN THE NIZHNIE SERGI REGION, CENTRAL URALS |
| title_sort | tomamaeite cu3 pt in native osmium from river sediments in the nizhnie sergi region central urals |
| topic | tomamaeite native osmium nizhnie sergi region central urals |
| url | https://journal.mineralogy.ru/wp-content/uploads/2022/06/2022_8_2_1.pdf |
| work_keys_str_mv | AT vvsharygin tomamaeitecu3ptinnativeosmiumfromriversedimentsinthenizhniesergiregioncentralurals AT igmikhailov tomamaeitecu3ptinnativeosmiumfromriversedimentsinthenizhniesergiregioncentralurals |