REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA)
The paper characterizes REE mineralization from carbonaceous metapelites of the Paleoproterozoic Mikhailovka Formation, which is the most ancient gold-bearing horizon of the Lena province (Bodaibo district, Irkutsk region). The conditions of metamorphism of the studied samples do not exceed those of...
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South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2022-09-01
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| Series: | Минералогия |
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| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2022/09/2022_8_3_3.pdf |
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| author | E.E. Palenova E.A. Rozhkova E.V. Belogub M.A. Rassomakhin |
| author_facet | E.E. Palenova E.A. Rozhkova E.V. Belogub M.A. Rassomakhin |
| author_sort | E.E. Palenova |
| collection | DOAJ |
| description | The paper characterizes REE mineralization from carbonaceous metapelites of the Paleoproterozoic Mikhailovka Formation, which is the most ancient gold-bearing horizon of the Lena province (Bodaibo district, Irkutsk region). The conditions of metamorphism of the studied samples do not exceed those of chlorite-muscovite subfacies of greenschist facies (ilmenite-pyrrhotite isograde). The metamorphic allanite is a main REE host, which crystallized before the last stage of plastic deformation and folding. The matter source for its formation is related to REE and Th absorbed on organic matter and clay minerals, as well as the detrital monazite. Late hydrothermal-metasomatic processes resulted in its replacement by hydroxycarbonates (hydroxybastnaesite, ancylite) and hydrous phosphates of light REEs (rhabdophane?), while Th precipitated as a hydrous silicate. Findings of low-temperature metamorphic monazite and xenotime are also described. |
| format | Article |
| id | doaj-art-1cc5a609972d456eabc90439eb3001f0 |
| institution | Kabale University |
| issn | 2313-545X 2782-2044 |
| language | English |
| publishDate | 2022-09-01 |
| publisher | South Urals Federal Research Center of Mineralogy and Geoecology UB RAS |
| record_format | Article |
| series | Минералогия |
| spelling | doaj-art-1cc5a609972d456eabc90439eb3001f02025-02-11T03:53:23ZengSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASМинералогия2313-545X2782-20442022-09-0183476610.35597/2313-545X-2022-8-3-3REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA)E.E. Palenova0E.A. Rozhkova1E.V. Belogub2M.A. Rassomakhin3South Urals Federal Research Center of Mineralogy and Geoecology UB RASSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASThe paper characterizes REE mineralization from carbonaceous metapelites of the Paleoproterozoic Mikhailovka Formation, which is the most ancient gold-bearing horizon of the Lena province (Bodaibo district, Irkutsk region). The conditions of metamorphism of the studied samples do not exceed those of chlorite-muscovite subfacies of greenschist facies (ilmenite-pyrrhotite isograde). The metamorphic allanite is a main REE host, which crystallized before the last stage of plastic deformation and folding. The matter source for its formation is related to REE and Th absorbed on organic matter and clay minerals, as well as the detrital monazite. Late hydrothermal-metasomatic processes resulted in its replacement by hydroxycarbonates (hydroxybastnaesite, ancylite) and hydrous phosphates of light REEs (rhabdophane?), while Th precipitated as a hydrous silicate. Findings of low-temperature metamorphic monazite and xenotime are also described.https://journal.mineralogy.ru/wp-content/uploads/2022/09/2022_8_3_3.pdfree mineralsmonaziterhabdophanebastnaesiteancylitelena gold-bearing provincemetamorphismmuscovite-chlorite subfacies |
| spellingShingle | E.E. Palenova E.A. Rozhkova E.V. Belogub M.A. Rassomakhin REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA) Минералогия ree minerals monazite rhabdophane bastnaesite ancylite lena gold-bearing province metamorphism muscovite-chlorite subfacies |
| title | REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA) |
| title_full | REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA) |
| title_fullStr | REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA) |
| title_full_unstemmed | REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA) |
| title_short | REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA) |
| title_sort | ree minerals in black shales of the paleoproterozoic mikhailovka formation baikal patom highland siberia |
| topic | ree minerals monazite rhabdophane bastnaesite ancylite lena gold-bearing province metamorphism muscovite-chlorite subfacies |
| url | https://journal.mineralogy.ru/wp-content/uploads/2022/09/2022_8_3_3.pdf |
| work_keys_str_mv | AT eepalenova reemineralsinblackshalesofthepaleoproterozoicmikhailovkaformationbaikalpatomhighlandsiberia AT earozhkova reemineralsinblackshalesofthepaleoproterozoicmikhailovkaformationbaikalpatomhighlandsiberia AT evbelogub reemineralsinblackshalesofthepaleoproterozoicmikhailovkaformationbaikalpatomhighlandsiberia AT marassomakhin reemineralsinblackshalesofthepaleoproterozoicmikhailovkaformationbaikalpatomhighlandsiberia |