PGM MINERALS FROM PLACER OF THE MURZINKA-ADUI GRANITE GNEISSIC COMPLEX AND THEIR POSSIBLE SOURCES
The paper presents the results of study of PGM minerals found in a small placer of the MurzinkaAdui granite gneissic block, Central Urals. We studied 65 PGM grains 0.1–0.8 mm in size including 42, 21, and 2 grains of the Os-Ir-Ru (±Pt, Rh) and Pt-Fe (±Ir, Rh, Pd) system, and sperrylite (PtAs2 ), res...
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South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2015-03-01
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| Series: | Минералогия |
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| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2019/09/2015-6.pdf |
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| author | V.V. Murzin A.Yu. Kissin D.A. Varlamov |
| author_facet | V.V. Murzin A.Yu. Kissin D.A. Varlamov |
| author_sort | V.V. Murzin |
| collection | DOAJ |
| description | The paper presents the results of study of PGM minerals found in a small placer of the MurzinkaAdui granite gneissic block, Central Urals. We studied 65 PGM grains 0.1–0.8 mm in size including 42, 21, and 2 grains of the Os-Ir-Ru (±Pt, Rh) and Pt-Fe (±Ir, Rh, Pd) system, and sperrylite (PtAs2 ), respectively. An assemblage of fusible and refractory PGE minerals in the studied placer is similar to the Nurali-Verkhneyvinsky type of PGE mineralization that may indicate that chromitities from transitional zone between dunite-harzburgite series of ophiolite rocks to the banded duniteclinopyroxenite ones are the main PGM source. The Os-Ru trend of variation in compositions was distinguished for the first time for the Os-Ir-Ru hexagonal alloys, but the importance of this trend is still unknown. Possible PGM sources including the run-off from the nearest Pt-bearing ultramafic massifs or destruction of small serpentinite bodies known in the studied area are discussed. |
| format | Article |
| id | doaj-art-a4541cc4ff5d4d408472dfa86921c57d |
| institution | DOAJ |
| issn | 2313-545X 2782-2044 |
| language | English |
| publishDate | 2015-03-01 |
| publisher | South Urals Federal Research Center of Mineralogy and Geoecology UB RAS |
| record_format | Article |
| series | Минералогия |
| spelling | doaj-art-a4541cc4ff5d4d408472dfa86921c57d2025-08-20T02:57:48ZengSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASМинералогия2313-545X2782-20442015-03-01113448PGM MINERALS FROM PLACER OF THE MURZINKA-ADUI GRANITE GNEISSIC COMPLEX AND THEIR POSSIBLE SOURCESV.V. Murzin0A.Yu. Kissin1D.A. Varlamov2Institute of Geology and Geochemistry UB RASInstitute of Geology and Geochemistry UB RASInstitute of Experimental Mineralogy RASThe paper presents the results of study of PGM minerals found in a small placer of the MurzinkaAdui granite gneissic block, Central Urals. We studied 65 PGM grains 0.1–0.8 mm in size including 42, 21, and 2 grains of the Os-Ir-Ru (±Pt, Rh) and Pt-Fe (±Ir, Rh, Pd) system, and sperrylite (PtAs2 ), respectively. An assemblage of fusible and refractory PGE minerals in the studied placer is similar to the Nurali-Verkhneyvinsky type of PGE mineralization that may indicate that chromitities from transitional zone between dunite-harzburgite series of ophiolite rocks to the banded duniteclinopyroxenite ones are the main PGM source. The Os-Ru trend of variation in compositions was distinguished for the first time for the Os-Ir-Ru hexagonal alloys, but the importance of this trend is still unknown. Possible PGM sources including the run-off from the nearest Pt-bearing ultramafic massifs or destruction of small serpentinite bodies known in the studied area are discussed.https://journal.mineralogy.ru/wp-content/uploads/2019/09/2015-6.pdfuralsplatinum group mineralsgranite gneisschromitemurzinka-adui block |
| spellingShingle | V.V. Murzin A.Yu. Kissin D.A. Varlamov PGM MINERALS FROM PLACER OF THE MURZINKA-ADUI GRANITE GNEISSIC COMPLEX AND THEIR POSSIBLE SOURCES Минералогия urals platinum group minerals granite gneiss chromite murzinka-adui block |
| title | PGM MINERALS FROM PLACER OF THE MURZINKA-ADUI GRANITE GNEISSIC COMPLEX AND THEIR POSSIBLE SOURCES |
| title_full | PGM MINERALS FROM PLACER OF THE MURZINKA-ADUI GRANITE GNEISSIC COMPLEX AND THEIR POSSIBLE SOURCES |
| title_fullStr | PGM MINERALS FROM PLACER OF THE MURZINKA-ADUI GRANITE GNEISSIC COMPLEX AND THEIR POSSIBLE SOURCES |
| title_full_unstemmed | PGM MINERALS FROM PLACER OF THE MURZINKA-ADUI GRANITE GNEISSIC COMPLEX AND THEIR POSSIBLE SOURCES |
| title_short | PGM MINERALS FROM PLACER OF THE MURZINKA-ADUI GRANITE GNEISSIC COMPLEX AND THEIR POSSIBLE SOURCES |
| title_sort | pgm minerals from placer of the murzinka adui granite gneissic complex and their possible sources |
| topic | urals platinum group minerals granite gneiss chromite murzinka-adui block |
| url | https://journal.mineralogy.ru/wp-content/uploads/2019/09/2015-6.pdf |
| work_keys_str_mv | AT vvmurzin pgmmineralsfromplacerofthemurzinkaaduigranitegneissiccomplexandtheirpossiblesources AT ayukissin pgmmineralsfromplacerofthemurzinkaaduigranitegneissiccomplexandtheirpossiblesources AT davarlamov pgmmineralsfromplacerofthemurzinkaaduigranitegneissiccomplexandtheirpossiblesources |