Ores and metals最新文献_第5页

Weathering crusts and their role in formation of post-kimberlite sedimentary sequences 风化壳及其在后金伯利岩沉积层序形成中的作用

Ores and metals Pub Date : 2022-08-06 DOI: 10.47765/0869-5997-2022-10013

N. Zinchuk

{"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}

引用次数: 1

Diamonds in old sedimentary rocks and their source (on the basis of Yakutia kimberlite province) 古沉积岩中的钻石及其来源(以雅库特金伯利岩省为基础)

Ores and metals Pub Date : 2022-08-06 DOI: 10.47765/0869-5997-2022-10011

Leonid Barduchinov, N. Zinchuk

{"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}

引用次数: 0

Geological work in the Republic of Sakha (Yakutia) over 100 years 萨哈共和国(雅库特)100多年的地质工作

Ores and metals Pub Date : 2022-08-06 DOI: 10.47765/0869-5997-2022-10007

V. Kalashnikov, L. Kovalev

引用次数: 2

A new type of gold mineralization in the basement of the Aldan-Stanovoi gold-bearing province 阿尔丹-斯坦诺沃伊含金省基底一种新型金矿化

Ores and metals Pub Date : 2022-08-06 DOI: 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

{"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}

引用次数: 1

North-Asian black shale ore-bearing megaprovince in the Northеastern Eurasia and its prospective minerogeny 欧亚大陆东北部北亚黑色页岩含矿大省及其找矿远景

Ores and metals Pub Date : 2022-08-06 DOI: 10.47765/0869-5997-2022-10009

Vitalii Grinenko, V. Baranov, Vladimir Deviatov

{"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}

引用次数: 0

Prospects for the development of the deposits of the Yuzhno-Yansky tin ore district 中扬锡矿区矿床开发前景展望

Ores and metals Pub Date : 2022-08-06 DOI: 10.47765/0869-5997-2022-10010

V. Kalashnikov

引用次数: 0

The contribution of the TSNIGRI Diamond laboratory to the scientific treasury of Yakutia TSNIGRI钻石实验室对雅库特科学宝库的贡献

Ores and metals Pub Date : 2022-08-06 DOI: 10.47765/0869-5997-2022-10008

Alexander Тolstov, N. Zinchuk

引用次数: 0

Apatite-staffelite ore flotation efficiency improvement using two-stage slurry thickening 两段浆体浓缩法提高磷灰石-staff矿石浮选效率

Ores and metals Pub Date : 2022-01-10 DOI: 10.47765/0869-5997-2021-10032

V. Morozov, Polivanskaya Valeriya

{"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}

引用次数: 0

Geology and pyrite-polymetallic mineralization of the forecasted Limonite deposit, Rassokhinsky ore cluster (Yenisei ridge) 叶尼塞岭Rassokhinsky矿群褐铁矿地质与黄铁矿多金属成矿预测

Ores and metals Pub Date : 2022-01-10 DOI: 10.47765/0869-5997-2021-10026

S. Serdyuk, V. Makarov, V. Kirilenko, Ilya Makarov, E. Muromtsev, Gennady Shvedov

引用次数: 1

Objective method for analysis of mineral resources supply on the example of Russia 以俄罗斯为例的矿产资源供给分析的客观方法

Ores and metals Pub Date : 2022-01-10 DOI: 10.47765/0869-5997-2021-10025

I. Egorova, B. Mikhailov

{"title":"Objective method for analysis of mineral resources supply \u0000on the example of Russia","authors":"I. Egorova, B. Mikhailov","doi":"10.47765/0869-5997-2021-10025","DOIUrl":"https://doi.org/10.47765/0869-5997-2021-10025","url":null,"abstract":"A forecast of nonfuel mineral production in Russia is \u0000considered, based on the integration of the expected life \u0000of specific deposits currently exploited and developed. It \u0000is shown that mineral safety is fully ensured for copper, \u0000nickel, lead, tungsten and tin, whose reserves are sufficient \u0000for their extraction, at least at the current level, for \u000040–50 years and there are real prospects for its significant \u0000growth. The sufficiency of other minerals is much \u0000lower: for molybdenum and chromium, it is limited to \u0000about 30 years, and the extraction of zinc and uranium \u0000in Russia may significantly decrease in 20 years. The situation \u0000is more difficult with the most liquid solid minerals, \u0000like gold and diamonds. The commissioning of mining \u0000enterprises at the developed gold deposits can ensure \u0000a rapid growth in the production of the precious \u0000metal in the coming years. However, at the beginning of \u0000the next decade, the resource base depletion of the Olimpiada \u0000field and a number of other exploited deposits is \u0000predicted. The projects currently implemented for the \u0000development of new fields do not compensate for the lost \u0000capacity. This may account for a long-term (until the beginning \u0000of the 2050s) decline in the Russian gold production, \u0000which may be halved against the current level by \u0000the end of this period. Such a scenario can only be avoided \u0000with the intensification of geological exploration in \u0000the coming years. The earlier decrease in the number of \u0000diamonds mined in Russia, associated with the depletion \u0000of reserves of exploited pipes, is predicted (since 2025). \u0000Unless new deposits are discovered and developed, the \u0000domestic production of precious stones will steadily decline \u0000and, in the 2040s, may be reduced fourfold.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90922465","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}

引用次数: 0