METAMANGANOLITH DEPOSITS OF THE URALS
Mineralogy of the metamorphosed manganese sediments, which are hosted by sedimentary complexes of the Urals, is described. One hundred and twelve minerals were identified in the manganese rocks. According to the variable amount of major minerals, the manganese rocks are subdivided on carbonate (I),...
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South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2016-09-01
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| Series: | Минералогия |
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| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2019/09/2016-3-1.pdf |
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| author | A.I. Brusnitsyn E.V. Starikova I.G. Zhukov |
| author_facet | A.I. Brusnitsyn E.V. Starikova I.G. Zhukov |
| author_sort | A.I. Brusnitsyn |
| collection | DOAJ |
| description | Mineralogy of the metamorphosed manganese sediments, which are hosted by sedimentary complexes of the Urals, is described. One hundred and twelve minerals were identified in the manganese rocks. According to the variable amount of major minerals, the manganese rocks are subdivided on carbonate (I), oxide-carbonate-silicate (II), and oxide-silicate (III) types. The formation of a certain mineralogical type of metamorphic assemblage is controlled by the content of organic matter in the primary sediments. The type I → type II → type III consequence reflects the decrease in the amount of organic matter in metalliferous sediments. Mineralogical data indicate that, in primary sediments, Mn accumulated in a silicate form (Mn–Si gel, glass, etc). During diagenesis, the Mn–Si phase was transformed to neotokite with subsequent formation of caryopilite and further crystallization of pyroxmangite, rhodonite, tephroite, and other silicates due to reactions involving caryopilite. The metamorphosed Mn-bearing sediments are characterized by the lowtemperature caryopilite-bearing (or tephroite-caryopilite-pyroxmangite ± rhodonite) and high-temperature caryopilite-free (or tephroite-pyroxmangite ± rhodonite) facies. Their PT-conditions correspond to zeolite and prehnite-pumpellyite (the low-temperature) and green schist and higher grade (the high-temperature) facies. |
| format | Article |
| id | doaj-art-c4f36395f1d04e97bf5e5fd2954ac994 |
| institution | OA Journals |
| issn | 2313-545X 2782-2044 |
| language | English |
| publishDate | 2016-09-01 |
| publisher | South Urals Federal Research Center of Mineralogy and Geoecology UB RAS |
| record_format | Article |
| series | Минералогия |
| spelling | doaj-art-c4f36395f1d04e97bf5e5fd2954ac9942025-08-20T01:58:12ZengSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASМинералогия2313-545X2782-20442016-09-0123331METAMANGANOLITH DEPOSITS OF THE URALSA.I. Brusnitsyn0E.V. Starikova1I.G. Zhukov2St. Petersburg State UniversityRussian Geological Research InstituteInstitute of Mineralogy UB RASMineralogy of the metamorphosed manganese sediments, which are hosted by sedimentary complexes of the Urals, is described. One hundred and twelve minerals were identified in the manganese rocks. According to the variable amount of major minerals, the manganese rocks are subdivided on carbonate (I), oxide-carbonate-silicate (II), and oxide-silicate (III) types. The formation of a certain mineralogical type of metamorphic assemblage is controlled by the content of organic matter in the primary sediments. The type I → type II → type III consequence reflects the decrease in the amount of organic matter in metalliferous sediments. Mineralogical data indicate that, in primary sediments, Mn accumulated in a silicate form (Mn–Si gel, glass, etc). During diagenesis, the Mn–Si phase was transformed to neotokite with subsequent formation of caryopilite and further crystallization of pyroxmangite, rhodonite, tephroite, and other silicates due to reactions involving caryopilite. The metamorphosed Mn-bearing sediments are characterized by the lowtemperature caryopilite-bearing (or tephroite-caryopilite-pyroxmangite ± rhodonite) and high-temperature caryopilite-free (or tephroite-pyroxmangite ± rhodonite) facies. Their PT-conditions correspond to zeolite and prehnite-pumpellyite (the low-temperature) and green schist and higher grade (the high-temperature) facies.https://journal.mineralogy.ru/wp-content/uploads/2019/09/2016-3-1.pdfmn mineralscaryopilitemn deposits of the urals |
| spellingShingle | A.I. Brusnitsyn E.V. Starikova I.G. Zhukov METAMANGANOLITH DEPOSITS OF THE URALS Минералогия mn minerals caryopilite mn deposits of the urals |
| title | METAMANGANOLITH DEPOSITS OF THE URALS |
| title_full | METAMANGANOLITH DEPOSITS OF THE URALS |
| title_fullStr | METAMANGANOLITH DEPOSITS OF THE URALS |
| title_full_unstemmed | METAMANGANOLITH DEPOSITS OF THE URALS |
| title_short | METAMANGANOLITH DEPOSITS OF THE URALS |
| title_sort | metamanganolith deposits of the urals |
| topic | mn minerals caryopilite mn deposits of the urals |
| url | https://journal.mineralogy.ru/wp-content/uploads/2019/09/2016-3-1.pdf |
| work_keys_str_mv | AT aibrusnitsyn metamanganolithdepositsoftheurals AT evstarikova metamanganolithdepositsoftheurals AT igzhukov metamanganolithdepositsoftheurals |