Ores and metals最新文献_第2页

New data on the geological structure and zonality of the Vorontsovka gold field in the Northern Urals 关于北乌拉尔沃龙佐夫卡金矿地质结构和地带性的新数据

Ores and metals Pub Date : 2024-01-17 DOI: 10.47765/0869-5997-2023-10017

Ilya Vikentyev, O. Vikentyeva, V. Blokov, R. Vykhristenko, Nadezhda Yushko, Lev Krinochkin

{"title":"New data on the geological structure and zonality of the Vorontsovka gold field in the Northern Urals","authors":"Ilya Vikentyev, O. Vikentyeva, V. Blokov, R. Vykhristenko, Nadezhda Yushko, Lev Krinochkin","doi":"10.47765/0869-5997-2023-10017","DOIUrl":"https://doi.org/10.47765/0869-5997-2023-10017","url":null,"abstract":"Spatial distribution of gold, copper, and iron ore deposits in the Northern Urals with the largest Turya-Auerbakh ore region is controlled by north-west trending linear zones of a probably fault nature. The influence has been demonstrated of regional factors (including the tectonic, magmatic, and geochemical ones) favoring formation of the large Au-As-Sb-Hg-Tl Vorontsovka deposit located within a volcanogenicsedimentary, substantially carbonate rock sequence. Closely spaced swarms of Devonian pre-ore and Carboniferous post-ore mafic dykes have been identified within the deposit. The primary geochemical halos of the Vorontsovka deposit have a multielement composition and, coupled with the ores, form a thick ore-halo zone confined to the gentle tectonic contact of sandstone-siltstone and limestone units. The main halo-forming elements are zonally distributed in the section. The footwall side of the gold deposit (rear zone) is dominated by Zn, Cd, Cu, Pb, Ag, and Bi; the axial zone, by Sb, Hg, Tl, and As; and the hanging side (frontal zone), by \u0000As, Zn, Hg, Pb, Ag, (Cu). In the east (closer to the Auerbakh granitoid massif), Ag, Zn, Pb, Mn, Y, Mo, and W relatively accumulate, while in the west (most remotely from the intrusive), Sb, Ba, As, Hg, Co, Ni, and Sn dominate. The 40Ar/39Ar age of ~391.1 million years, obtained for hydromica of the gold-arsenic ores, corresponds to the period of emplacement of granodiorite of the final Auerbakh massif intrusive phase. The conclusion is made on the crucial magmatic contribution to the formation of gold ores of the deposit.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":" 347","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139618108","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

Deformational and metasomatic transformations of detrital gold in the course of placer formation 块矿形成过程中的碎屑金变形和变质作用

Ores and metals Pub Date : 2024-01-17 DOI: 10.47765/0869-5997-2023-10020

Chayana Khertek, Anatoly Sazonov

{"title":"Deformational and metasomatic transformations of detrital gold in the course of placer formation","authors":"Chayana Khertek, Anatoly Sazonov","doi":"10.47765/0869-5997-2023-10020","DOIUrl":"https://doi.org/10.47765/0869-5997-2023-10020","url":null,"abstract":"The richest gold placers periodically mined since 1838 are known in the north of the Republic of Tyva, within the basin of the Amyl and Sistig-Khem rivers. Ag-Au gold is the most common, and cuprous and mercuric varieties are presented in small quantities. Lode gold occurrences are confined to quartz veins and have no economic value. Detrital gold in the placer deposits has the typical typomorphic features of placer gold: roundness, compositional heterogeneity, the presence of rims and intergranular veinlets of high-fineness gold, and particle deformation structures. We have considered the transformation mechanisms of detrital gold within the mentioned placers due to the deforming interaction of transported particles in the sedimentogenic environment at the stage of motogenesis, as well as crystallophysical effects at the stage of syngenesis – early diagenesis during heterogeneous metasomatic recrystallization of endogenous gold under conditions of differential mobility of the main mineral-forming elements of gold, Au, Ag, \u0000Cu, and Hg. As a result, compositionally polyphase structures formed in the particle, they are high-fineness rims along the periphery of the particles, intergranular veins of high-fineness gold, deformation structures, and increased fineness in the particle kernels.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":" 412","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139617970","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

Paleovolcanism and the prospecting indicators and outlooks for discovery of new economic-grade copper-zinc massive sulfide ore deposits in the Verkhneuralsk ore region, Southern Urals 南乌拉尔上新乌拉尔斯克矿区古火山和勘探指标以及发现新的经济级铜锌块状硫化物矿床的展望

Ores and metals Pub Date : 2024-01-17 DOI: 10.47765/0869-5997-2023-10016

T. Surin

{"title":"Paleovolcanism and the prospecting indicators and outlooks for discovery of new economic-grade copper-zinc massive sulfide ore deposits in the Verkhneuralsk ore region, Southern Urals","authors":"T. Surin","doi":"10.47765/0869-5997-2023-10016","DOIUrl":"https://doi.org/10.47765/0869-5997-2023-10016","url":null,"abstract":"The principal regularities of distribution of the VMS type mineralization in the Verkhneuralsk ore region in the Southern Urals are characterized. Metallogenic factors of the first kind (stratigraphic, magmatic, lithological, and tectonic) and of the second kind (geotectonic and paleovolcanic) are \u0000shown. A combined convective-postmagmatic ore formation model for the VMS is briefly described, that takes into account a genetic relationship of the VMS ore formation to silicic magmatism of the basalt-rhyolite (“contrast”) volcanic formation, four types of such relationship being distinguished, the spatial, temporal, energetic, and compositional ones. The geological, geochemical, and geophysical prospecting indicators for the Ural type VMS mineralization are presented separately for various classes of forecasting metallogenic areas (ore regions, ore clusters, and ore fields and deposits). In the southern portion of the ore district, a site promising for revealing a new ore deposit has been identified, for which the category P2 forecasted resources have been estimated and a recommendation has been given for the geological exploration.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":" 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139616608","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

Paleogeotectonic position of the Kyzyk Chadr porphyry copper ore field, Republic of Tyva 蒂瓦共和国 Kyzyk Chadr 斑岩铜矿田的古大地构造位置

Ores and metals Pub Date : 2024-01-17 DOI: 10.47765/0869-5997-2023-10019

I. Starostin, Aleksander Chernykh, M. Girfanov

{"title":"Paleogeotectonic position of the Kyzyk Chadr porphyry copper ore field, Republic of Tyva","authors":"I. Starostin, Aleksander Chernykh, M. Girfanov","doi":"10.47765/0869-5997-2023-10019","DOIUrl":"https://doi.org/10.47765/0869-5997-2023-10019","url":null,"abstract":"Regional-scale localization conditions of the Kyzyk-Chadr molybdenum-copper porphyry ore field in the southern folded frame of the Siberian Platform are considered. The porphyry mineralization of the field formed at the Salairian (Early Caledonian) phase of development of the Altai-Sayan segment of the \u0000Central Asian Orogenic Belt (CAOB), in connection with small intrusions of the gabbro-diorite-granodioritegranite Kyzykchadr Complex (Є2–3). The formation of the ore-bearing complex was associated with an accretionalcollisional magmatic belt superimposed on a Vendian–Early Cambrian volcanic-sedimentary island-arc substrate. The complex is only known within the local Ozhu uplifted block with a “batholitic” massif of the gabbrotonalite-plagiogranite Tannu-Ola Complex (Є2), but it is suggested that there could existed some analogous accretional-collisional Cambrian intrusions productive for Mo-Cu porphyry mineralization in some other areas, that were later overlapped by Ordovician–Silurian and Early Devonian volcanosedimentary deposits or broken by \u0000intrusive massifs of the Caledonian collisional volcano-plutonic belt. The rocks of the Salairian and Caledonian magmatic belts were deformed during subsequent geotectonic stages, primarily the Late Paleozoic collision, and overlain by younger sedimentary deposits. The position of economic-grade Mo and Mo-Cu porphyry deposits in the southern Altai-Sayan segment of the CAOB is assumed to be confined to areas of spatial superposition \u0000(overlapping) of magmatic belts of the three geotectonic stages: 1) island-arc volcanic belts (V–Є1), 2) “batholithic” intrusions and small intrusions of the magmatic belt of the accretional-collisional stage (Є2–3), 3) the collisional volcano-plutonic belt (O–D1).","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139616991","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

Mineral resource base of the CIS countries of the Central Asian region: status, areas of interaction and development 中亚区域独联体国家的矿产资源基础:地位、相互作用和发展领域

Ores and metals Pub Date : 2023-10-09 DOI: 10.47765/0869-5997-2023-10011

Aleksander Chernykh, Mikhail Girfanov, Valery Istomin, DMITRY Fedorov, Vladimir Pashkov, Andrey Svatkov

引用次数: 0

Endogenous gold of the russian Altai 俄罗斯阿尔泰的内生金

Ores and metals Pub Date : 2023-10-09 DOI: 10.47765/0869-5997-2023-10012

Ivan Gaskov

{"title":"Endogenous gold of the russian Altai","authors":"Ivan Gaskov","doi":"10.47765/0869-5997-2023-10012","DOIUrl":"https://doi.org/10.47765/0869-5997-2023-10012","url":null,"abstract":"The Altai of Russia in the geological and metallogenic sense includes the Altai Mountains and the northwestern part of Rudny Altai, and in administrative terms - the Altai Territory and the Altai Republic. Gorny Altai has experienced a complex history of geological development, including subduction, accretion-collision and rifting processes with the formation of various types of magmatism and endogenous gold mineralization. The history of gold mining in the region is associated mainly with placers and currently the reserve of placer gold deposits is almost exhausted, and the prospects for primary mineralization have been little studied. In this regard, the problem of assessing the potential of ore gold in known ore occurrences and promising areas of ore clusters has become urgent in the region.In the Russian part of Rudny Altai, gold reserves are mainly associated with gold-bearing pyrite-polymetallic deposits and less with small gold ore occurrences.Gold-sulfide-skarn, epithermal gold-silver, copper-gold-porphyry and gold-mercury types of mineralization may have important practical significance for the region. The increase in ore gold reserves in the Russian part of Rudny Altai is mainly due to additional exploration of pyrite-polymetallic deposits.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135141987","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

The main stages of ore formation of the Svetloe epithermal gold deposit (Khabarovsk Region) based on the study of the mineral composition of metasomatic rocks and ores 根据交代岩和矿石的矿物组成研究了哈巴罗夫斯克地区Svetloe浅成热液金矿床的主要成矿阶段

Ores and metals Pub Date : 2023-10-09 DOI: 10.47765/0869-5997-2023-10013

Daria Levochskaya, TAMARA Yakich, DMITRY Lesnyak, Maxim Rudmin, Aleksey Ruban, Aleksey Erofeev, Aleksey Mazurov

引用次数: 0

Quartz-tourmaline metasomatites in gold deposits in Aktyuz-Boоrdinsky ore district (Northern Tien Shan, Kyrgyzstan) 吉尔吉斯斯坦北天山aktyuz - bovorrdinsky矿区金矿床中的石英-电气石交代岩

Ores and metals Pub Date : 2023-10-09 DOI: 10.47765/0869-5997-2023-10015

Nikolai Pak, Elena Ivleva, Vitali Shatov, Nadezhda Shatova, Anna Goncharenko

引用次数: 0

Composition, formation conditions, distribution patterns and zoning of gold mineralization in the Stadukhinsky ore-placer region (Western Chukotka) 西楚科奇斯塔图金斯基矿带金矿化组成、形成条件、分布模式及分带

Ores and metals Pub Date : 2023-10-09 DOI: 10.47765/0869-5997-2023-10014

Yuri Nikolaev, Irina Balykova, Sergei Kuzin, Ivan Baksheev, Andrey Apletalin, Vsevolod Prokofiev, Evgeni Vlasov, Ildar Kalko, Valery Kosyatov

{"title":"Composition, formation conditions, distribution patterns and zoning of gold mineralization in the Stadukhinsky ore-placer region (Western Chukotka)","authors":"Yuri Nikolaev, Irina Balykova, Sergei Kuzin, Ivan Baksheev, Andrey Apletalin, Vsevolod Prokofiev, Evgeni Vlasov, Ildar Kalko, Valery Kosyatov","doi":"10.47765/0869-5997-2023-10014","DOIUrl":"https://doi.org/10.47765/0869-5997-2023-10014","url":null,"abstract":"Gold deposits associated with granitoid intrusions have long been known. Recently, a class of deposits was identified among them, called intrusion-related granite systems, IRGS (gold-rare metal formation). The standards of the geological prospecting model for them are the deposits of the Tintin metallogenic belt (Alaska, Canada). In Russia, this type has been studied less; IRGS includes the Shkolnoye and Butarnoye (Magadan region) and Kekura (Chukotka) deposits. Based on field and laboratory studies, generalization of prospecting geological and geochemical data, the characteristics and localization features of gold mineralization associated with granitoids of a large igneous uplift in the South Anyui structural-formational zone (Western Chukotka) were determined. The mineral composition of ores, the sequence of their formation were studied, homogenization temperatures and salt concentrations in gas-liquid inclusions were determined. The geochemical and mineralogical zoning of the ore-magmatic system has been identified, and criteria have been developed for assessing erosion and predicting gold mineralization to depth.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135141713","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

High-grade iron ores in the laterite weathering crust after the banded iron formation in the Simandou mountain range, Republic of Guinea 几内亚西芒杜山脉带状铁形成后红土风化壳中的高品位铁矿

Ores and metals Pub Date : 2023-07-11 DOI: 10.47765/0869-5997-2023-10008

A. Bolonin, I. Myznikov, Alla Nigmatullina

{"title":"High-grade iron ores in the laterite weathering crust after the banded iron formation in the Simandou mountain range, Republic of Guinea","authors":"A. Bolonin, I. Myznikov, Alla Nigmatullina","doi":"10.47765/0869-5997-2023-10008","DOIUrl":"https://doi.org/10.47765/0869-5997-2023-10008","url":null,"abstract":"In West Africa, in the southeastern Guinea, in the Simandou Range region underlain by the Archean gneiss-granite basement, a north–south synclinorium structure is extended, that is composed of the Lower Proterozoic series of metamorphic rocks. A thick sequence of the banded iron formation (itabirites) with interlayers of phyllites and mica schists is exposed in cores of the synclines. According to their composition, the itabirites are subdivided into quartz-magnetite and amphibole-quartz-magnetite varieties. High-grade iron ores (60–66% Fe) formed in a pseudomorphic manner after the itabirites in the Cenozoic lateritic weathering crust. At the North Simandou, Zogota, and Pic-de-Fon deposits, the rich ores compose mantle-shaped orebodies up to 150–350 m deep. The orebodies possess the following vertical zonality: primary magnetite itabirites – martitized itabirites – quartz-martite friable ore – martite friable ore and martite–limonite friable ore – goethite-hematite friable to solid ore – deluvial limonite ore (kanga and cuirass). All the types of the high-grade ores are dominated by hematite. The rich iron ores were formed from itabirites as a result of the oxidation of magnetite to martite, the almost complete removal of silica, and the subsequent additional supply of iron and its precipitation in the form of hydroxides. During the formation of the iron ores, kaolin clays and bauxites were formed after the phyllite interlayers.","PeriodicalId":19636,"journal":{"name":"Ores and metals","volume":"275 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76632964","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