Based on the study of core material, the lithological features of the deposits of the Kolgan formation of the Frasnian stage in the southwestern part of the East Orenburg arch uplift are considered. This formation is an important oil and gas play. Since picking, almost nonintermittent prospecting and exploration works have been carried out. A large bulk of heterogeneous material is received and processed, which complement and expand the knowledge of the geological structure and genesis of sediments. The research was carried out by petrographic and lithological methods. As a result, 5 lithotypes were identified according to the ratio of carbonate and terrigenous components and structural and textural features. It was found that the carbonate component prevailed in all the selected lithotypes, which distinguished this formation from other similar sections, where terrigenous rocks predominated. The presence of bioturbation of varying degrees of intensity and the presence of tempestites is characteristic.
{"title":"Lithological characteristics of the Kolgan formation of the south-western part of the East Orenburg arch uplift","authors":"Nuriya Sagdeeva","doi":"10.19110/geov.2024.4.2","DOIUrl":"https://doi.org/10.19110/geov.2024.4.2","url":null,"abstract":"Based on the study of core material, the lithological features of the deposits of the Kolgan formation of the Frasnian stage in the southwestern part of the East Orenburg arch uplift are considered. This formation is an important oil and gas play. Since picking, almost nonintermittent prospecting and exploration works have been carried out. A large bulk of heterogeneous material is received and processed, which complement and expand the knowledge of the geological structure and genesis of sediments. The research was carried out by petrographic and lithological methods. As a result, 5 lithotypes were identified according to the ratio of carbonate and terrigenous components and structural and textural features. It was found that the carbonate component prevailed in all the selected lithotypes, which distinguished this formation from other similar sections, where terrigenous rocks predominated. The presence of bioturbation of varying degrees of intensity and the presence of tempestites is characteristic.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"122 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141360621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The paper proposes the derivation of 25 combinatorial-geometric kinds of tetrahedrons belonging to 8 point symmetry groups. Among them are 3 simple forms: cubic (-43m), tetragonal (-42m) and rhombic (222) tetrahedrons; and 5 combinations: trigonal pyramid and monohedron (3m), 2 planar dihedrons (mm2, 2 kinds), 2 axial dihedrons (2, 3 kinds), planar dihedron and 2 monohedrons (m, 5 kinds), 4 monohedrons (1, 11 kinds). It is shown that tetrahedrons with symmetry 23, -4 and 3 — subgroups of the point symmetry group of the cubic tetrahedron — are impossible. The example is recommended for consideration in the course of crystallography on «simple forms and their combinations».
{"title":"From teaching experience. XIV. On the variety of tetrahedrons","authors":"Yuriy Voytehovskiy","doi":"10.19110/geov.2024.4.4","DOIUrl":"https://doi.org/10.19110/geov.2024.4.4","url":null,"abstract":"The paper proposes the derivation of 25 combinatorial-geometric kinds of tetrahedrons belonging to 8 point symmetry groups. Among them are 3 simple forms: cubic (-43m), tetragonal (-42m) and rhombic (222) tetrahedrons; and 5 combinations: trigonal pyramid and monohedron (3m), 2 planar dihedrons (mm2, 2 kinds), 2 axial dihedrons (2, 3 kinds), planar dihedron and 2 monohedrons (m, 5 kinds), 4 monohedrons (1, 11 kinds). It is shown that tetrahedrons with symmetry 23, -4 and 3 — subgroups of the point symmetry group of the cubic tetrahedron — are impossible. The example is recommended for consideration in the course of crystallography on «simple forms and their combinations».","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"25 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141357581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We briefly outlined the history of discovery and study of concentration flows accompanying the growth and dissolution of crystals in solutions. Various crystallogenic consequences associated with concentration flows (changes in the mechanisms of transport of matter to the growing crystal, differences in the growth of the upper and lower faces, distortion of crystal shape, occurrence of hydrodynamic boundary layer around a crystal together with the diffusion layer, etc.) were described. The phenomenon of concentration differentiation (stratification) of the solution under the influence of concentration flows was especially analyzed. The criteria conditions for differentiation of the solution during crystal growth were determined.
{"title":"Concentration flows. 230 years in the crystallogenic agenda","authors":"Askhab Askhabov","doi":"10.19110/geov.2024.4.3","DOIUrl":"https://doi.org/10.19110/geov.2024.4.3","url":null,"abstract":"We briefly outlined the history of discovery and study of concentration flows accompanying the growth and dissolution of crystals in solutions. Various crystallogenic consequences associated with concentration flows (changes in the mechanisms of transport of matter to the growing crystal, differences in the growth of the upper and lower faces, distortion of crystal shape, occurrence of hydrodynamic boundary layer around a crystal together with the diffusion layer, etc.) were described. The phenomenon of concentration differentiation (stratification) of the solution under the influence of concentration flows was especially analyzed. The criteria conditions for differentiation of the solution during crystal growth were determined.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"100 47","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141359214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The article is devoted to the archaeological and mineralogical analysis of metal products from burial No. 59 from the Kokpomyag burial ground of the Vym culture in Vychegda Permian, dating from the mid-12th to the first half of the 13th century. The chronological framework of the burial is determined, a description of the grave goods is given, and imported silver jewelry from the Perm Kama region and Volga Bulgaria is found. Using analytical SEM, 13 artifacts of copper, bronze, brass and silver composition, the phase and chemical composition of the objects have been studied in detail. The results of the research indicate that Perm foundry workers from Vychegda possessed not only the technology of bronze foundry production, but also silver jewelry making.
{"title":"Mineralogical and geochemical analysis of metal jewelry from burial 59 of Kokpomyag burial ground of Vym culture in Vychegda Perm of the 11th—14th centuries","authors":"V. Silaev, E. Savelyeva, V. Filippov, A. Khazov","doi":"10.19110/geov.2024.4.1","DOIUrl":"https://doi.org/10.19110/geov.2024.4.1","url":null,"abstract":"The article is devoted to the archaeological and mineralogical analysis of metal products from burial No. 59 from the Kokpomyag burial ground of the Vym culture in Vychegda Permian, dating from the mid-12th to the first half of the 13th century. The chronological framework of the burial is determined, a description of the grave goods is given, and imported silver jewelry from the Perm Kama region and Volga Bulgaria is found. Using analytical SEM, 13 artifacts of copper, bronze, brass and silver composition, the phase and chemical composition of the objects have been studied in detail. The results of the research indicate that Perm foundry workers from Vychegda possessed not only the technology of bronze foundry production, but also silver jewelry making.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"03 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141359069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article completes the publication of the «Memories of Mineralogists» of the repressed Professor A. Ya. Mickey, found by the author in the Professor D. P. Grigoriev Archive, kept in the Russian Mineralogical Society. From the correspondence the motivations and life circumstances in which the texts were written become clear. A. Ya. Mickey’s letters are deciphered, attributed and briefly commented. The relevance of the article lies in the need to uphold the priorities of Russian science. The aim of the work is to cover as fully as possible the professional activities of repressed mineralogists as an important component of the history of Russian science. Mention of I. M. Beznarytny, A. K. Boldyrev, P. V. Bryantsev, V. I. Vernadsky, P. Groth, S. A. Zaborovsky, V. A. Zilbermints, L. L. Ivanov, E. P. Kastner, V. I. Kryzhanovsky, E. K. Lazarenko, N. I. Lebedev, A. V. Nechaev, I. I. Tanatar, V. V. Tikhomirov, E. K. Ustiev, N. M. Fedorovsky, G. K. Feldman, A. E. Fersman, P. N. Chirvinsky, and I. I. Shafranovsky should attract the attention of readers. Attention is drawn to the importance of personal archives in the study of the history of science. The of Professor D. P. Grigoriev Archive in letters and other documents reflects several decades of the pre-war and post-war history of Russian mineralogy.
本文是作者在俄罗斯矿物学会保存的 D. P. Grigoriev 教授档案中发现的被压制的 A. Ya.米基的 "矿物学家回忆"，作者在俄罗斯矿物学会保存的 D. P. Grigoriev 教授档案中找到了这些书信。从通信中可以清楚地看出这些文字的写作动机和生活环境。A. Ya.米基的信件进行了破译、归属和简要评论。文章的现实意义在于需要坚持俄罗斯科学的优先性。该著作的目的是尽可能全面地介绍被压制的矿物学家的专业活动，将其作为俄罗斯科学史的重要组成部分。提到了 I. M. Beznarytny、A. K. Boldyrev、P. V. Bryantsev、V. I. Vernadsky、P. Groth、S. A. Zaborovsky、V. A. Zilbermints、L. L. Ivanov、E. P. Kastner、V. I. Kryzhanovsky、E. K. Lazarenko、N. I.Lebedev, A. V. Nechaev, I. I. Tanatar, V. V. Tikhomirov, E. K. Ustiev, N. M. Fedorovsky, G. K. Feldman, A. E. Fersman, P. N. Chirvinsky, and I. I. Shafranovsky 应该引起读者的注意。提请注意个人档案在科学史研究中的重要性。D. P. Grigoriev 教授档案中的信件和其他文件反映了俄罗斯矿物学战前和战后几十年的历史。
{"title":"From the Professor D. P. Grigoriev Archive: Professor A. Ya. Mickey’s letters","authors":"Yuriy Voytehovskiy","doi":"10.19110/geov.2024.3.4","DOIUrl":"https://doi.org/10.19110/geov.2024.3.4","url":null,"abstract":"This article completes the publication of the «Memories of Mineralogists» of the repressed Professor A. Ya. Mickey, found by the author in the Professor D. P. Grigoriev Archive, kept in the Russian Mineralogical Society. From the correspondence the motivations and life circumstances in which the texts were written become clear. A. Ya. Mickey’s letters are deciphered, attributed and briefly commented. The relevance of the article lies in the need to uphold the priorities of Russian science. The aim of the work is to cover as fully as possible the professional activities of repressed mineralogists as an important component of the history of Russian science. Mention of I. M. Beznarytny, A. K. Boldyrev, P. V. Bryantsev, V. I. Vernadsky, P. Groth, S. A. Zaborovsky, V. A. Zilbermints, L. L. Ivanov, E. P. Kastner, V. I. Kryzhanovsky, E. K. Lazarenko, N. I. Lebedev, A. V. Nechaev, I. I. Tanatar, V. V. Tikhomirov, E. K. Ustiev, N. M. Fedorovsky, G. K. Feldman, A. E. Fersman, P. N. Chirvinsky, and I. I. Shafranovsky should attract the attention of readers. Attention is drawn to the importance of personal archives in the study of the history of science. The of Professor D. P. Grigoriev Archive in letters and other documents reflects several decades of the pre-war and post-war history of Russian mineralogy.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"67 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140976144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Titanosilicates with the structure of sitinakite and ivanyukite were synthesized with the use of enrichment wastes of quartz-leucoxene concentrate (Yarega deposit, Komi Republic) by autoclave method. It was found that using a mixture of mineralizer KOH and NaOH at a concentration of 0.15 and 1 mol/l, K-Na sitinakite was formed. Increasing the concentration of KOH to 0.45 mol/L and decreasing NaOH to 0.7 mol/L led to crystallization of ivanyukite. The obtained titanosilicates are characterized by high sorption activity towards Sr2+ and Cs+ cations. Sorption capacity of K-Na sitinakite and ivanyukite for Sr2+ was 95–110 and 102–114 mg/g, respectively. The Cs+ sorption capacity for K-Na sitinakite is 240 mg/g, the sorption capacity for ivanyukite is much higher — 370–380 mg/g. It was shown that the differences in the sorption capacity of K-Na sitinakite and ivanyukite are caused by the features of the crystal structure.
{"title":"Effect of mineralizer and synthesis duration on sorption properties of sitinakite and ivanyukite","authors":"I Perovskiy, T. Panikorovskii, D Shushkov","doi":"10.19110/geov.2024.3.3","DOIUrl":"https://doi.org/10.19110/geov.2024.3.3","url":null,"abstract":"Titanosilicates with the structure of sitinakite and ivanyukite were synthesized with the use of enrichment wastes of quartz-leucoxene concentrate (Yarega deposit, Komi Republic) by autoclave method. It was found that using a mixture of mineralizer KOH and NaOH at a concentration of 0.15 and 1 mol/l, K-Na sitinakite was formed. Increasing the concentration of KOH to 0.45 mol/L and decreasing NaOH to 0.7 mol/L led to crystallization of ivanyukite. The obtained titanosilicates are characterized by high sorption activity towards Sr2+ and Cs+ cations. Sorption capacity of K-Na sitinakite and ivanyukite for Sr2+ was 95–110 and 102–114 mg/g, respectively. The Cs+ sorption capacity for K-Na sitinakite is 240 mg/g, the sorption capacity for ivanyukite is much higher — 370–380 mg/g. It was shown that the differences in the sorption capacity of K-Na sitinakite and ivanyukite are caused by the features of the crystal structure.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"116 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140977947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We have described jasper pebbles from gravelites of the Dzhezhim formation on the Zhezhimparma uplift in the Southern Timan. The chip has a zonal structure. The central part is composed of devitrified volcanic glass and is surrounded by the rocks with an oolitic and crustified structure, composed of hematite-pigmented microgranular hexagonal quartz aggregates. We made a conclusion that one of the sources of the detrital material was rocks of timanide (preuralide) orogen, which final collision stage was Late Vendian by the age.
{"title":"On the question of the age of the Dzhezhim formation of the South Timan","authors":"Natal'ya Nikulova, K. Kulikova, A. Sandula","doi":"10.19110/geov.2024.3.5","DOIUrl":"https://doi.org/10.19110/geov.2024.3.5","url":null,"abstract":"We have described jasper pebbles from gravelites of the Dzhezhim formation on the Zhezhimparma uplift in the Southern Timan. The chip has a zonal structure. The central part is composed of devitrified volcanic glass and is surrounded by the rocks with an oolitic and crustified structure, composed of hematite-pigmented microgranular hexagonal quartz aggregates. We made a conclusion that one of the sources of the detrital material was rocks of timanide (preuralide) orogen, which final collision stage was Late Vendian by the age.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140975386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The purpose of this study is to study the microstructure and 3D modeling of Paleoproterozoic stromatolites Segosia columnaris and Sundosia mira in the eastern part of the Fennoscandian shield (Karelian craton). The premise of the study is the extensive paleontological material collected by researchers in the 1950s and 1980s. Modern methods, including SEM analysis, 3D modeling, and the results of Raman spectroscopy are used. As a result of studying the microstructure of stromatolites, possible remnants of cyanobacteria involved in the formation of these structures were identified, which potentially indicated the biogenic origin of the studied samples. The results of Raman spectroscopy obtained by other authors also indicate the biogenic nature of the studied samples. For the first time, images of the spatial shapes of the studied stromatolites were obtained by 3D visualization software, which could be used to refine the classification of stromatolites by morphological features. 3D modeling of stromatolite buildings allowed restoring their original shape.
{"title":"Paleoproterozoic stromatolites Segosia columnaris and Sundosia mira of the Eastern part of the Fennoscandian Shield: microstructure and 3D modeling","authors":"Andrew Lyutikov","doi":"10.19110/geov.2024.3.2","DOIUrl":"https://doi.org/10.19110/geov.2024.3.2","url":null,"abstract":"The purpose of this study is to study the microstructure and 3D modeling of Paleoproterozoic stromatolites Segosia columnaris and Sundosia mira in the eastern part of the Fennoscandian shield (Karelian craton). The premise of the study is the extensive paleontological material collected by researchers in the 1950s and 1980s. Modern methods, including SEM analysis, 3D modeling, and the results of Raman spectroscopy are used. As a result of studying the microstructure of stromatolites, possible remnants of cyanobacteria involved in the formation of these structures were identified, which potentially indicated the biogenic origin of the studied samples. The results of Raman spectroscopy obtained by other authors also indicate the biogenic nature of the studied samples. \u0000For the first time, images of the spatial shapes of the studied stromatolites were obtained by 3D visualization software, which could be used to refine the classification of stromatolites by morphological features. 3D modeling of stromatolite buildings allowed restoring their original shape.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"59 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140974469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Paleozoic section on the Kozhim River of the Subpolar Urals is the best sequence of the northern Urals. The border of Carboniferous-Permian deposits are observed on the opposite banks of the Kozhim River and are represented by two types of sections: on the right bank — the Kozhym skeletal mound, on the left bank — depression deposits of mixed composition (Losinoostrov Fm.). The article presents the first information on the isotopic composition of carbon and oxygen in the Lower Permian limestones of the Losinoostrov Fm. It is shown that the obtained data on the isotopic composition on the 13C–18O diagram are visually separated into three clusters. The first cluster with the lowest values of 13C (–0.3…1.1 ‰) and 18O (23.5…25.0 ‰) included the most intensively silicified rocks (siliceous bioclastic limestones, secondary silicitolites, siliceous-carbonate-argillaceous mixtolites and siliceous-argillaceous limestone). The third cluster, with the highest values of 13C (3.9…5.1 ‰) and 18O (26.0…26.8 ‰), includes bioclastic and peloid-micritic limestones. In this case, the 13C values correspond to the range of variations in the carbon isotopic composition indicated in review works on the chemostratigraphic correlation of Permian deposits. The second cluster occupies an intermediate position and is characterized by the values of 13C (2.0…2.8 ‰) and 18O (24.3…25.4 ‰). This cluster is predominantly represented by limestones enriched with terrigenous materials. A comparison is made of the isotopic composition of the limestones of the Losinoostrov Formation with the coeval limestones of the Kozhim skeletal mound, which showed higher values of 13C and 18O in the latter.
{"title":"Isotopic composition of carbon and oxygen in Upper Carboniferous-Lower Permian carbonate rocks of the Losinoostrov Formation (Subpolar Urals, Kozhim River)","authors":"N. Inkina","doi":"10.19110/geov.2024.3.1","DOIUrl":"https://doi.org/10.19110/geov.2024.3.1","url":null,"abstract":"The Paleozoic section on the Kozhim River of the Subpolar Urals is the best sequence of the northern Urals. The border of Carboniferous-Permian deposits are observed on the opposite banks of the Kozhim River and are represented by two types of sections: on the right bank — the Kozhym skeletal mound, on the left bank — depression deposits of mixed composition (Losinoostrov Fm.). The article presents the first information on the isotopic composition of carbon and oxygen in the Lower Permian limestones of the Losinoostrov Fm. It is shown that the obtained data on the isotopic composition on the 13C–18O diagram are visually separated into three clusters. The first cluster with the lowest values of 13C (–0.3…1.1 ‰) and 18O (23.5…25.0 ‰) included the most intensively silicified rocks (siliceous bioclastic limestones, secondary silicitolites, siliceous-carbonate-argillaceous mixtolites and siliceous-argillaceous limestone). The third cluster, with the highest values of 13C (3.9…5.1 ‰) and 18O (26.0…26.8 ‰), includes bioclastic and peloid-micritic limestones. In this case, the 13C values correspond to the range of variations in the carbon isotopic composition indicated in review works on the chemostratigraphic correlation of Permian deposits. The second cluster occupies an intermediate position and is characterized by the values of 13C (2.0…2.8 ‰) and 18O (24.3…25.4 ‰). This cluster is predominantly represented by limestones enriched with terrigenous materials. \u0000A comparison is made of the isotopic composition of the limestones of the Losinoostrov Formation with the coeval limestones of the Kozhim skeletal mound, which showed higher values of 13C and 18O in the latter.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140974869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sergey Skublov, N. Hamdard, M. Ivanov, A. Gavrilchik, V. Stativko
The SIMS method (secondary ions mass-spectrometry) determined the impurity composition of a beryl crystals (aquamarine) from the pegmatites of the Pashki lithium deposit (Nuristan province, Afghanistan). 12 local determinations of the content of 20 chemical elements (including halogens and water) were performed. In comparison with aquamarine from rare metals, including spodumene pegmatites from other regions of the world, the studied beryl is significantly enriched with large ion lithophile elements: Li (about 1100 ppm), Na (4500 ppm) and K (300 ppm). High concentrations of alkaline elements in the beryl of lithium pegmatites are considered as a genetic sign of the high potential of alkalis created during the crystallization of spodumene associated with beryl and other lithium minerals. This well-known genetically determined feature of beryl, characteristic of productive lithium pegmatites, therefore is promising in the development of search and evaluation criteria for lithium pegmatites of Nuristan and other pegmatite provinces.
{"title":"Impurity composition of beryl from spodumene pegmatites of Pashki deposit (Nuristan province, Afghanistan)","authors":"Sergey Skublov, N. Hamdard, M. Ivanov, A. Gavrilchik, V. Stativko","doi":"10.19110/geov.2024.2.5","DOIUrl":"https://doi.org/10.19110/geov.2024.2.5","url":null,"abstract":"The SIMS method (secondary ions mass-spectrometry) determined the impurity composition of a beryl crystals (aquamarine) from the pegmatites of the Pashki lithium deposit (Nuristan province, Afghanistan). 12 local determinations of the content of 20 chemical elements (including halogens and water) were performed. In comparison with aquamarine from rare metals, including spodumene pegmatites from other regions of the world, the studied beryl is significantly enriched with large ion lithophile elements: Li (about 1100 ppm), Na (4500 ppm) and K (300 ppm). High concentrations of alkaline elements in the beryl of lithium pegmatites are considered as a genetic sign of the high potential of alkalis created during the crystallization of spodumene associated with beryl and other lithium minerals. This well-known genetically determined feature of beryl, characteristic of productive lithium pegmatites, therefore is promising in the development of search and evaluation criteria for lithium pegmatites of Nuristan and other pegmatite provinces.","PeriodicalId":23572,"journal":{"name":"Vestnik of geosciences","volume":"5 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140664860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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