Pub Date : 2022-08-06DOI: 10.47765/0869-5997-2022-10013
N. Zinchuk
The principal suppliers of terrigenous material to forming ancient diamond placers are characterized based on the main diamond-bearing districts of the Siberian platform as an example. A special attention is paid to characteristics of the local sources of allothigenous material washed out into sedimentation basins of the period specified, the main of which were weathering crusts formed upon terrigenouscarbonate rocks, trappean formations (dolerites, tuffs, and tuffaceous rock sequences), and kimberlites. A comprehensive comparative investigation of the ancient weathering crusts upon the rocks of various chemical and mineralogical composition allowed tracing the specific features of their hypergene alteration and the typomorphic indications of the eluvial products. The same varieties of primary minerals in redeposited products of weathering of the various rocks may be differentiated at the structural level, and the secondary phyllosilicates may be identified either by occupation of the octahedral positions in their structure, or by mutual superposition of individual silicate layers, or by their polytypic character. Redeposition of the products of weathering of the rocks of various composition near the denudation areas and their predominant accumulation in freshwater basins, as well as a small thickness of the sedimentary layers formed and their insignificant burial, had determined a weak hydrodynamic impact of the environment on the allothigenous minerals (argillaceous, first of all), which did not lead to their sufficient diagenetic alteration. Therefore, the products of various types of the weathering crusts, redeposited in the ancient sedimentary sequences, retain the structural and crystal-chemical peculiarities in relation to the minerals of the eluvial rock masses, which allows tracing the ways of arrival of the terrigenous (including diamondiferous) material into the sedimentation basins.
{"title":"Weathering crusts and their role in formation of post-kimberlite sedimentary sequences","authors":"N. Zinchuk","doi":"10.47765/0869-5997-2022-10013","DOIUrl":"https://doi.org/10.47765/0869-5997-2022-10013","url":null,"abstract":"The principal suppliers of terrigenous material to forming ancient diamond placers are characterized based on the main diamond-bearing districts of the Siberian platform as an example. A special attention is paid to characteristics of the local sources of allothigenous material washed out into sedimentation basins of the period specified, the main of which were weathering crusts formed upon terrigenouscarbonate rocks, trappean formations (dolerites, tuffs, and tuffaceous rock sequences), and kimberlites. A comprehensive comparative investigation of the ancient weathering crusts upon the rocks of various chemical and mineralogical composition allowed tracing the specific features of their hypergene alteration and the typomorphic indications of the eluvial products. The same varieties of primary minerals in redeposited products of weathering of the various rocks may be differentiated at the structural level, and the secondary phyllosilicates may be identified either by occupation of the octahedral positions in their structure, or by mutual superposition of individual silicate layers, or by their polytypic character. Redeposition of the products of weathering of the rocks of various composition near the denudation areas and their predominant accumulation in freshwater basins, as well as a small thickness of the sedimentary layers formed and their insignificant burial, had determined a weak hydrodynamic impact of the environment on the allothigenous minerals (argillaceous, first of all), which did not lead to their sufficient diagenetic alteration. Therefore, the products of various types of the weathering crusts, redeposited in the ancient sedimentary sequences, retain the structural and crystal-chemical peculiarities in relation to the minerals of the eluvial rock masses, which allows tracing the ways of arrival of the terrigenous (including diamondiferous) material into the sedimentation basins.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78015374","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}
Pub Date : 2022-08-06DOI: 10.47765/0869-5997-2022-10011
Leonid Barduchinov, N. Zinchuk
This study provides the results of a complex investigation of a number of kimberlite bodies with halfindustrial diamond content in several regions of the Siberian platform. This allowed us to establish the typomorphic features of the mineral. Diamonds from halfindustrial diatremes of Daldyn-Alakitsky and VerkhneMunsky diamondiferous regions are characterized by the prevalence of crystals with rhombic dodecahedral habit at high content of typical rounded diamonds, being an unfavorable factor of high diamond content. Differences in diamond features between individual kimberlite bodies are less pronounced than between diamondiferous regions, confirming the upper mantle heterogeneity in various parts of the platform. Prevalence of laminar crystals of octahedral, rhombic dodecahedral and transitive between them habits in pipes of the peripheral part of the Siberian platform (pipe Malo-Kuonapskaya) is indicative of the absence of horizontal zonation in alteration of typomorphic features within the investigated territory. Examples of using typomorphic features of diamonds are shown for forecasting kimberlite with high-diamond cobtent within Central-Siberian sub-provinces (Malobotuobinsky, Daldyn-Alakitsky, Morkoka and Sredne-Markhinsky regions, Lena-Anabar (Kyutyungdinsky region) and Tunguska (Baikitsky region)).
{"title":"Diamonds in old sedimentary rocks and their source (on the basis of Yakutia kimberlite province)","authors":"Leonid Barduchinov, N. Zinchuk","doi":"10.47765/0869-5997-2022-10011","DOIUrl":"https://doi.org/10.47765/0869-5997-2022-10011","url":null,"abstract":"This study provides the results of a complex investigation of a number of kimberlite bodies with halfindustrial diamond content in several regions of the Siberian platform. This allowed us to establish the typomorphic features of the mineral. Diamonds from halfindustrial diatremes of Daldyn-Alakitsky and VerkhneMunsky diamondiferous regions are characterized by the prevalence of crystals with rhombic dodecahedral habit at high content of typical rounded diamonds, being an unfavorable factor of high diamond content. Differences in diamond features between individual kimberlite bodies are less pronounced than between diamondiferous regions, confirming the upper mantle heterogeneity in various parts of the platform. Prevalence of laminar crystals of octahedral, rhombic dodecahedral and transitive between them habits in pipes of the peripheral part of the Siberian platform (pipe Malo-Kuonapskaya) is indicative of the absence of horizontal zonation in alteration of typomorphic features within the investigated territory. Examples of using typomorphic features of diamonds are shown for forecasting kimberlite with high-diamond cobtent within Central-Siberian sub-provinces (Malobotuobinsky, Daldyn-Alakitsky, Morkoka and Sredne-Markhinsky regions, Lena-Anabar (Kyutyungdinsky region) and Tunguska (Baikitsky region)).","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78119973","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}
Pub Date : 2022-08-06DOI: 10.47765/0869-5997-2022-10007
V. Kalashnikov, L. Kovalev
The main stages of the creation and development of Russia’s largest mineral resource base in the Republic of Sakha (Yakutia) are considered in connection with the 100th anniversary of the republic formation. Since 1922, the extraction of gold, diamonds, silver, antimony, coal, natural gas, oil, and constructive materials has been developing in the territory of the republic on the basis of the mineral deposits discovered. The mineral resources accumulated during the previous 100 years still determine the economic development of the republic. The most important and effective factor in the impressive successes and achievements of the geologists of Yakutia is the human one. The geological survey, prospection, and exploration of the mineral deposits provide abundant material for the scientific research and generalization. The development of geological works has created a huge flow of geological information that needs systemic generalization. Over the past 100 years, geologists have fulfilled their historical task of creating the mineral resource base and mining industry in the former Yakutian SSR - recent Republic of Sakha(Yakutia). Their activities continue to this day.
{"title":"Geological work in the Republic of Sakha (Yakutia) over 100 years","authors":"V. Kalashnikov, L. Kovalev","doi":"10.47765/0869-5997-2022-10007","DOIUrl":"https://doi.org/10.47765/0869-5997-2022-10007","url":null,"abstract":"The main stages of the creation and development of Russia’s largest mineral resource base in the Republic of Sakha (Yakutia) are considered in connection with the 100th anniversary of the republic formation. Since 1922, the extraction of gold, diamonds, silver, antimony, coal, natural gas, oil, and constructive materials has been developing in the territory of the republic on the basis of the mineral deposits discovered. The mineral resources accumulated during the previous 100 years still determine the economic development of the republic. The most important and effective factor in the impressive successes and achievements of the geologists of Yakutia is the human one. The geological survey, prospection, and exploration of the mineral deposits provide abundant material for the scientific research and generalization. The development of geological works has created a huge flow of geological information that needs systemic generalization. Over the past 100 years, geologists have fulfilled their historical task of creating the mineral resource base and mining industry in the former Yakutian SSR - recent Republic of Sakha(Yakutia). Their activities continue to this day.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86819507","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}
Pub Date : 2022-08-06DOI: 10.47765/0869-5997-2022-10014
Evgenii Sokolov, T. Babkina, Ivan Makogonov, I. Linnik, Egor Khalgaev, Lyudmila Shmatkova, G. Anisimova, L. Kondrat’eva, Veronika Kardashevskaya
A new type of gold mineralization has been revealed in rocks of the basement of the Aldan-Stanovoi goldbearing province, within the Spokoininsky ore cluster of the Tyrkandinsky gold-bearing region of southern Yakutia. A geological model has been created of an object with a bulk-minable nonlinear type gold mineralization related to elements of plicative structures and to the reverse fault type tectonics in the hosting metamorphic rocks of the basement. The modeled object is represented by a combination of lodes with veinlet-disseminated sulfide-(pyrite)quartz mineralization. A complex has been refined of prospecting guides and criteria, that characterizes this mineralization type represented by the ore-bearing lodes with gold-quartz and gold-low-sulfide-quartz veinletdisseminated mineralization in rocks of the basement and Late Jurassic-Early Cretaceous magmatic formations. The structural-geological position, the morphological type, the composition of the ore-hosting rocks and ores, and the principal parametric characteristics of the gold mineralization have been determined. Sampled intervals with the gold grades corresponding to the required parameters for the preliminary estimation have been distinguished in the exploration workings. Forecasted resources of the P2 category have been assessed.
{"title":"A new type of gold mineralization in the basement of the Aldan-Stanovoi gold-bearing province","authors":"Evgenii Sokolov, T. Babkina, Ivan Makogonov, I. Linnik, Egor Khalgaev, Lyudmila Shmatkova, G. Anisimova, L. Kondrat’eva, Veronika Kardashevskaya","doi":"10.47765/0869-5997-2022-10014","DOIUrl":"https://doi.org/10.47765/0869-5997-2022-10014","url":null,"abstract":"A new type of gold mineralization has been revealed in rocks of the basement of the Aldan-Stanovoi goldbearing province, within the Spokoininsky ore cluster of the Tyrkandinsky gold-bearing region of southern Yakutia. A geological model has been created of an object with a bulk-minable nonlinear type gold mineralization related to elements of plicative structures and to the reverse fault type tectonics in the hosting metamorphic rocks of the basement. The modeled object is represented by a combination of lodes with veinlet-disseminated sulfide-(pyrite)quartz mineralization. A complex has been refined of prospecting guides and criteria, that characterizes this mineralization type represented by the ore-bearing lodes with gold-quartz and gold-low-sulfide-quartz veinletdisseminated mineralization in rocks of the basement and Late Jurassic-Early Cretaceous magmatic formations. The structural-geological position, the morphological type, the composition of the ore-hosting rocks and ores, and the principal parametric characteristics of the gold mineralization have been determined. Sampled intervals with the gold grades corresponding to the required parameters for the preliminary estimation have been distinguished in the exploration workings. Forecasted resources of the P2 category have been assessed.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85156722","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}
Pub Date : 2022-08-06DOI: 10.47765/0869-5997-2022-10009
Vitalii Grinenko, V. Baranov, Vladimir Deviatov
The North-Asian ore-bearing black shale megaprovince has first been distinguished in the northеastern Eurasia. Its distinguishing within the two contiguous platforms, the Siberian and East Siberian (buried under the Verkhoyansk-Kolyma folded area) ones, is based on a cyclic formation of rock sequences enriched in clayey and organic matter in the boreal sea basin. Within these contiguous platforms, clayey and black shale rocks was identified, assigned to geological formations of the “class of black shale troughs, depressions, and basins”. Their appearance was synchronous in the evolution of the North-Asian megaprovince. The sedimentogenesis evolution proceeded in the shallow-water Boreal sea basin on the consolidated continental crust from the beginning of the Riphean eonothem through the Early Cretaceous, inclusively, during more than 1513 Ma. The megaprovince embraces ten minerogenic epochs. Its minerogenic specialization is potentially promising for exogenous accumulations of diamonds; dispersed noble metals; elements of the chalcophile, siderophile, and rare metal groups; concentrated hydrocarbons; and energy (combustible) minerals. It was closely genetically related to systemic restructuring of the regime of chemogenous and terrigenous sedimentogenesis in the boreal sea basin and to reactivation of the tectonic processes and magmatic activity within its surrounding continental land.
{"title":"North-Asian black shale ore-bearing megaprovince in the Northеastern Eurasia and its prospective minerogeny","authors":"Vitalii Grinenko, V. Baranov, Vladimir Deviatov","doi":"10.47765/0869-5997-2022-10009","DOIUrl":"https://doi.org/10.47765/0869-5997-2022-10009","url":null,"abstract":"The North-Asian ore-bearing black shale megaprovince has first been distinguished in the northеastern Eurasia. Its distinguishing within the two contiguous platforms, the Siberian and East Siberian (buried under the Verkhoyansk-Kolyma folded area) ones, is based on a cyclic formation of rock sequences enriched in clayey and organic matter in the boreal sea basin. Within these contiguous platforms, clayey and black shale rocks was identified, assigned to geological formations of the “class of black shale troughs, depressions, and basins”. Their appearance was synchronous in the evolution of the North-Asian megaprovince. The sedimentogenesis evolution proceeded in the shallow-water Boreal sea basin on the consolidated continental crust from the beginning of the Riphean eonothem through the Early Cretaceous, inclusively, during more than 1513 Ma. The megaprovince embraces ten minerogenic epochs. Its minerogenic specialization is potentially promising for exogenous accumulations of diamonds; dispersed noble metals; elements of the chalcophile, siderophile, and rare metal groups; concentrated hydrocarbons; and energy (combustible) minerals. It was closely genetically related to systemic restructuring of the regime of chemogenous and terrigenous sedimentogenesis in the boreal sea basin and to reactivation of the tectonic processes and magmatic activity within its surrounding continental land.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73551399","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}
Pub Date : 2022-08-06DOI: 10.47765/0869-5997-2022-10010
V. Kalashnikov
A brief review of the mineral resource base of the native tin of the Republic of Sakha (Yakutia) is given with a description of the economically important objects of the South Yansky tin ore region. The degree of assimilation of the mineral resource base of the tin in the Russian Federation is low. The undistributed fund has some high-grade ore deposits located within the region involved in the development. The most significant are the deposits of Burgachan, Ilintas, Alys-Khaya, which, together with prospecting ore occurrences, are considered as the basis for the creation of a large cluster for the extraction and production of tin. The involvement of these deposits in exploitation is hindered by their location in the specially protected natural area (SPNT) of Khotu. It is proposed to remove objects from the specially protected natural area.
{"title":"Prospects for the development of the deposits of the Yuzhno-Yansky tin ore district","authors":"V. Kalashnikov","doi":"10.47765/0869-5997-2022-10010","DOIUrl":"https://doi.org/10.47765/0869-5997-2022-10010","url":null,"abstract":"A brief review of the mineral resource base of the native tin of the Republic of Sakha (Yakutia) is given with a description of the economically important objects of the South Yansky tin ore region. The degree of assimilation of the mineral resource base of the tin in the Russian Federation is low. The undistributed fund has some high-grade ore deposits located within the region involved in the development. The most significant are the deposits of Burgachan, Ilintas, Alys-Khaya, which, together with prospecting ore occurrences, are considered as the basis for the creation of a large cluster for the extraction and production of tin. The involvement of these deposits in exploitation is hindered by their location in the specially protected natural area (SPNT) of Khotu. It is proposed to remove objects from the specially protected natural area.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"406 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76534914","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}
Pub Date : 2022-08-06DOI: 10.47765/0869-5997-2022-10008
Alexander Тolstov, N. Zinchuk
Brief information is given on the main stages of scientific activity or the half-century history of the Research Geological Enterprise (NIGP) of PJSC ALROSA, confirming their inheritance from the initial stages of the enterprise (Diamond Laboratory, YaOKI, YaF and YANIGP TsNIGRI) in various scientific areas (geology, tectonics, stratigraphy, paleotectonics, paleogeography, petrophysics, petrography, petrology, petrochemistry, geophysics, geochemistry, complex study of primary and secondary minerals, etc.). Attention is focused on individual stages of such studies, caused by the expansion of the geography of research and the development of a modern set of methods for studying the material composition of rocks. Over the half-century period of activity of the Diamond Laboratory - NIGP PJSC ALROSA (PJSC) in Yakutia, the company’s scientists have transferred and implemented hundreds of forecast and methodological recommendations into geological exploration, published thousands of articles, published more than a hundred monographs on a wide range of areas of geology of solid minerals and, First of all, for diamonds.
{"title":"The contribution of the TSNIGRI Diamond laboratory to the scientific treasury of Yakutia","authors":"Alexander Тolstov, N. Zinchuk","doi":"10.47765/0869-5997-2022-10008","DOIUrl":"https://doi.org/10.47765/0869-5997-2022-10008","url":null,"abstract":"Brief information is given on the main stages of scientific activity or the half-century history of the Research Geological Enterprise (NIGP) of PJSC ALROSA, confirming their inheritance from the initial stages of the enterprise (Diamond Laboratory, YaOKI, YaF and YANIGP TsNIGRI) in various scientific areas (geology, tectonics, stratigraphy, paleotectonics, paleogeography, petrophysics, petrography, petrology, petrochemistry, geophysics, geochemistry, complex study of primary and secondary minerals, etc.). Attention is focused on individual stages of such studies, caused by the expansion of the geography of research and the development of a modern set of methods for studying the material composition of rocks. Over the half-century period of activity of the Diamond Laboratory - NIGP PJSC ALROSA (PJSC) in Yakutia, the company’s scientists have transferred and implemented hundreds of forecast and methodological recommendations into geological exploration, published thousands of articles, published more than a hundred monographs on a wide range of areas of geology of solid minerals and, First of all, for diamonds.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80540495","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}
Pub Date : 2022-01-10DOI: 10.47765/0869-5997-2021-10032
V. Morozov, Polivanskaya Valeriya
The studies were performed suggesting that the cause of P2O5 losses during apatite-staffelite ores (ASO) treatment are due to non-selective flocculation of fine classes during flotation. When using strong flocculants, special preparation of condensed slurries is necessary, ensuring their deflocculation before the flotation process. A scheme and mode of preparation of fine classes for the flotation process have been developed, including thickening of the classification overflows using strong anionic flocculants and deflocculation of the thickened product before the flotation process with reagents-dispersants used in the basic flotation mode. A mode of preparation of slimes of ASO ores for flotation is proposed, including thickening of the discharge of the classification operation using the anionic flocculant “Praestol-2540”, conditioning of the condensed product with additions of liquid glass and caustic soda in a ratio of 1 : 1, dilution and re-thickening of deflocculated slimes, consolidation and flotation thickened sludge and sand. The big laboratory tests have shown that the application of the developed regime provides a total increase in the extraction of P2O5 from ore from 70,1 to 71,5 % with an increase in the P2O5 content in apatite concentrate from 37,1 to 37,8 %, which makes the developed technology promising for processing refractory ASO at Kovdorsky GOK.
{"title":"Apatite-staffelite ore flotation efficiency improvement \u0000using two-stage slurry thickening","authors":"V. Morozov, Polivanskaya Valeriya","doi":"10.47765/0869-5997-2021-10032","DOIUrl":"https://doi.org/10.47765/0869-5997-2021-10032","url":null,"abstract":"The studies were performed suggesting that the \u0000cause of P2O5 losses during apatite-staffelite ores (ASO) \u0000treatment are due to non-selective flocculation of fine \u0000classes during flotation. When using strong flocculants, \u0000special preparation of condensed slurries is necessary, \u0000ensuring their deflocculation before the flotation process. \u0000A scheme and mode of preparation of fine classes for the \u0000flotation process have been developed, including thickening \u0000of the classification overflows using strong anionic \u0000flocculants and deflocculation of the thickened product \u0000before the flotation process with reagents-dispersants \u0000used in the basic flotation mode. A mode of preparation \u0000of slimes of ASO ores for flotation is proposed, including \u0000thickening of the discharge of the classification \u0000operation using the anionic flocculant “Praestol-2540”, \u0000conditioning of the condensed product with additions of \u0000liquid glass and caustic soda in a ratio of 1 : 1, dilution \u0000and re-thickening of deflocculated slimes, consolidation \u0000and flotation thickened sludge and sand. The big laboratory \u0000tests have shown that the application of the developed \u0000regime provides a total increase in the extraction \u0000of P2O5 from ore from 70,1 to 71,5 % with an increase \u0000in the P2O5 content in apatite concentrate from 37,1 to \u000037,8 %, which makes the developed technology promising \u0000for processing refractory ASO at Kovdorsky GOK.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"369 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85460869","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}
Pub Date : 2022-01-10DOI: 10.47765/0869-5997-2021-10026
S. Serdyuk, V. Makarov, V. Kirilenko, Ilya Makarov, E. Muromtsev, Gennady Shvedov
The development of Russia’s largest Gorevskoye leadzinc deposit (Gorevsky GOK, Novoangarsky OK) will depend on promising deposits of the Angara polymetallic ore region, in particular, those of the Rassokhinsky ore cluster. Based on the analysis of geological and geophysical information of previous and current studies, a major Limonite pyrite-polymetallic (massive sulfide) deposit is forecasted within it. The main lithological and stratigraphic criterion for the localization of ores is determined by their confinement to high-carbon black quartz-sericite schists of the upper subformation of the Potoskuy suite of the Upper Riphean. In the top of this pack, layered and massive pyrite-polymetallic ores, 70– 140 m thick, are localized. Based on PPA data, lead and zinc content in core varies from fractions of a percent to several percent, based on the ICP-AES method: 0,1– 3,7 % Pb, 0,1–6,4 % Zn, Pb : Zn ratio is 1 : (1–10).
{"title":"Geology and pyrite-polymetallic mineralization of the forecasted \u0000Limonite deposit, Rassokhinsky ore cluster (Yenisei ridge)","authors":"S. Serdyuk, V. Makarov, V. Kirilenko, Ilya Makarov, E. Muromtsev, Gennady Shvedov","doi":"10.47765/0869-5997-2021-10026","DOIUrl":"https://doi.org/10.47765/0869-5997-2021-10026","url":null,"abstract":"The development of Russia’s largest Gorevskoye leadzinc \u0000deposit (Gorevsky GOK, Novoangarsky OK) will \u0000depend on promising deposits of the Angara polymetallic \u0000ore region, in particular, those of the Rassokhinsky \u0000ore cluster. Based on the analysis of geological and geophysical \u0000information of previous and current studies, \u0000a major Limonite pyrite-polymetallic (massive sulfide) \u0000deposit is forecasted within it. The main lithological \u0000and stratigraphic criterion for the localization of ores is \u0000determined by their confinement to high-carbon black \u0000quartz-sericite schists of the upper subformation of the \u0000Potoskuy suite of the Upper Riphean. In the top of this \u0000pack, layered and massive pyrite-polymetallic ores, 70– \u0000140 m thick, are localized. Based on PPA data, lead and \u0000zinc content in core varies from fractions of a percent \u0000to several percent, based on the ICP-AES method: 0,1– \u00003,7 % Pb, 0,1–6,4 % Zn, Pb : Zn ratio is 1 : (1–10).","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73670831","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}
Pub Date : 2022-01-10DOI: 10.47765/0869-5997-2021-10025
I. Egorova, B. Mikhailov
A forecast of nonfuel mineral production in Russia is considered, based on the integration of the expected life of specific deposits currently exploited and developed. It is shown that mineral safety is fully ensured for copper, nickel, lead, tungsten and tin, whose reserves are sufficient for their extraction, at least at the current level, for 40–50 years and there are real prospects for its significant growth. The sufficiency of other minerals is much lower: for molybdenum and chromium, it is limited to about 30 years, and the extraction of zinc and uranium in Russia may significantly decrease in 20 years. The situation is more difficult with the most liquid solid minerals, like gold and diamonds. The commissioning of mining enterprises at the developed gold deposits can ensure a rapid growth in the production of the precious metal in the coming years. However, at the beginning of the next decade, the resource base depletion of the Olimpiada field and a number of other exploited deposits is predicted. The projects currently implemented for the development of new fields do not compensate for the lost capacity. This may account for a long-term (until the beginning of the 2050s) decline in the Russian gold production, which may be halved against the current level by the end of this period. Such a scenario can only be avoided with the intensification of geological exploration in the coming years. The earlier decrease in the number of diamonds mined in Russia, associated with the depletion of reserves of exploited pipes, is predicted (since 2025). Unless new deposits are discovered and developed, the domestic production of precious stones will steadily decline and, in the 2040s, may be reduced fourfold.
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