SovietRxiv · Open Access in English
Rediscovering the Soviet scientific archive, in English
25357 full-text translations 14926 English PDFs 22539 abstracts
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This paper surveys the metallogeny and industrial classification of gold ore deposits in Kazakhstan, emphasizing that the region is a major ore gold province with numerous districts and more than 1,000 known mineralization points, occurrences, and deposits. Drawing on accumulated prospecting, explor…
This paper examines geological structures in vein gold deposits that are favorable for the occurrence of gold nuggets, drawing mainly on examples from the Southern Urals and other Soviet gold districts. It argues that nuggets commonly occur in groups and are associated with prolonged vein formation,…
This paper examines quartz vein gold mineralization in the Yenisei Ridge, focusing on vein zones associated with regional zones of fracturing, cleavage, and concealed deep faulting. Using geological observations from the Sovetskoye and Eldorado ore fields, it compares two morphological and mineralog…
This paper examines the morphology, dimensions, and vertical zonation of magmatogenic gold ore fields of the root type, distinguishing single-root and multi-root systems and relating them to subvolcanic and plutonic magmatic complexes. Using comparative morphometric descriptions of ore bodies, vein …
This paper examines secondary zoning in the gold-bearing sulfide veins of the Darasun deposit in Eastern Transbaikalia, where thin, steep ore bodies are controlled by long-lived tectonic zones near a granodiorite contact. Using geological observations, mineralogical characterization, chemical analys…
This paper examines secondary zonation and hypergene enrichment in gold ore deposits of Yakutia, focusing on vein deposits of the Verkhoyansk-Kolyma folded region and the Lebediny and Kuranakh-type deposits of Central Aldan. Using mining observations, sampling by depth intervals, mineralogical chara…
This paper examines how hypergene oxidation changes the mineral composition and processing behavior of gold-sulfide ores, using the Kokpatas deposit as a representative case. The authors calculate element stability coefficients relative to primary ores, relate oxidation stages to mineral assemblages…
This study examines the distribution of sulfide minerals and trace elements in pyrite and bulk sulfide fractions from primary dispersion halos of the Baley gold ore field. Using mineral separation, microscopic examination, and semiquantitative spectral analysis of samples from a transverse section t…
This paper examines controls on gold distribution in the vein system of the Komsomolskoye deposit in the Kuznetsk Alatau, a Berikul group gold deposit hosted by a gabbro-diorite stock. Using geological observations, vein morphology, alteration zoning, mining levels, assay patterns, and correlation o…
This paper examines the distribution of gold among skarn and related ore types in the central sector of the Natalyevskoye gold deposit in the northern Kuznetsk Alatau. Using sampling data from ore bodies, especially lens No. 1, it compares average gold contents in leucodiopside, tremolite, magnetite…
This paper examines the distribution and forms of gold in primary halos around vein type gold deposits, chiefly at the Darasun deposit in Eastern Transbaikalia and the Berikul deposit in the Kuznetsk Alatau. Using a sensitive spectrochemical method and systematic sampling across veins, contacts, hos…
This paper examines productive mineral associations in the sulfide quartz veins of the Kochkar gold arsenic deposit in the Southern Urals, using mineralogical mapping of deep levels, textural observations, and element correlations. The authors distinguish five successive ore stage associations: arse…
This paper examines the paragenetic relationships and sequence of mineral formation in the low-sulfide quartz-gold deposits of the Sarala ore field in the Kuznetsk Alatau. Because structural observations alone had produced divergent interpretations, the authors analyze typomorphic mineral features, …
This paper examines how the composition of host rocks influences ore mineral assemblages in near-surface subvolcanic gold and silver occurrences of the eastern USSR. Using rock analyses from 12 deposits and occurrences, recalculated and compared with the dominant ore associations, the study distingu…
This paper examines how polymerization of silicic acid in hydrothermal solutions may influence the formation of morphological varieties of vein quartz in gold-bearing quartz veins of Northern Kazakhstan. Using electron microscopy of one-stage replicas, the authors compare internal structures in cryp…
The paper examines the possible forms and mobility of gold in endogenous and hydrothermal processes using thermodynamic estimates and laboratory experiments. It reviews entropy and free energy data for gold compounds, emphasizing chloride, hydroxide, and sulfur complexes, then calculates the tempera…
This paper examines contact metasomatism and associated gold mineralization in the Tapsa-Kaa-Khem interfluve of Central Tuva, where Lower Cambrian carbonate and effusive rocks are intruded by granodiorites and affected by fault-controlled alteration. It distinguishes magnesian and calcareous skarns,…
This paper compares ore-forming processes in molybdenum, gold-molybdenum, and gold deposits of Eastern Transbaikalia using mineral parageneses and thermobarometric data from inclusions in ore and gangue minerals. It argues that these deposits share a prolonged multistage pneumatolytic and hydrotherm…
This paper characterizes hydrothermally altered rocks in the Kommunar gold ore field of Khakassia and relates them to stages of postmagmatic and ore-forming activity. Using petrographic observations, chemical comparisons of altered and unaltered rocks, thermometric study of gas-liquid inclusions, aq…
This paper examines vertical and spatial zonation of trace elements in quartz-gold veins of the Sarala ore field, focusing on the Kaskadnoye deposit. Using emission spectral analysis of monomineralic quartz and pyrite and statistical grouping by levels, the authors identify systematic enrichment of …
This paper proposes a classification of endogenous zoning in hydrothermal gold ore deposits, focusing on forms insufficiently distinguished in earlier general studies of ore zoning. Using examples from Soviet and foreign deposits, especially Darasun and Balei in Eastern Transbaikalia, it separates s…
This paper examines the formation of quartz-gold veins using structural, morphological, textural, and mineralogical observations from deposits in Western Siberia, Transbaikalia, Kazakhstan, and the Urals, supplemented by comparative literature data. The authors argue that vein clusters record the up…
This paper examines intra-ore transformations in hydrothermal gold deposits, focusing on the dissolution and redeposition of vein quartz and native gold during successive stages of ore formation. Drawing on observations from gold ore fields in the Soviet Union, it identifies healed fractures, pseudo…
This paper surveys evidence for gold mineralization associated with magnetite deposits, especially skarn and contact metasomatic occurrences, in the Altai-Sayan mountain region and adjacent Siberian areas. Drawing on published reports, field observations, and comparisons with foreign examples, it de…
This paper describes the geological setting and petrographic composition of a gold-bearing intrusive complex in southeastern Gornaya Shoria, an area long known for rich placer gold deposits. It examines several small stock-like massifs, including Ortotag, Bazas, Chezim, and Fedorovsky, characterizin…
This paper describes gold-bearing listvenites associated with hyperbasites in the northern Kuznetsk Alatau and argues that they represent a promising type of gold mineralization for the region. On the basis of geological, petrographic, mineralogical, chemical, and material-balance observations, it d…
This paper reexamines the genetic relationship between gold mineralization and intrusive magmatism in the northern Kuznetsk Alatau, especially the Mariinskaya taiga and Berikul block. On the basis of field observations from 1957 to 1966, structural analysis, and correlations between ore bodies and i…
This paper classifies gold ore mineralization in the Daurian zone of Central Transbaikalia using large-scale geological and structural mapping of the Ilyinsky, Dybyksinsky, Lyubavinsky, and Khaverginsky deposits. It distinguishes three principal types, gold, quartz, sulfide, gold, sericite, sulfide,…
This paper examines the succession and possible inheritance of gold mineralization in the Baley ore district of Eastern Transbaikalia, where gold-bearing formations range from presumed Upper Proterozoic metamorphogenic veins to Paleozoic metasomatic quartzites and Mesozoic quartz-tourmaline, quartz-…
This paper examines Precambrian conglomerates in the northeastern Yenisei Ridge as possible metalliferous formations, especially with respect to gold potential. On the basis of geological investigations in the Tei, Uvolga, Chapa, and Vorogovka interfluve, it distinguishes conglomerate and quartz san…
This paper reinterprets gold mineralization in the Gerfed ore field of the Yenisei Ridge, previously regarded as a metasomatic “main vein” within a contact or tectonic zone. On the basis of field mapping, dump and drill-core observations, sedimentary textures, conglomerate finds, radioactivity patte…
This paper identifies a prospective gold ore district in the Trans-Angara part of the Yenisei Ridge by reinterpreting regional metallogenic zonality and tectonic control. It argues that gold mineralization is concentrated along the boundary between the central gold-bearing zone and the eastern amagm…
This paper examines the position of gold mineralization within the Precambrian magmatic evolution of the Trans-Angara part of the Yenisei Ridge, with the aim of improving forecasts for new gold deposits. Using regional petro-metallogenic analysis, it relates gold, rare-metal, and polymetallic minera…
This paper examines the distribution of gold ore fields and deposits in the Yenisei Ridge using statistical analysis undertaken during compilation of a gold-content map and broader geological generalization from 1963 to 1967. It argues that gold mineralization is controlled by a combination of struc…
This paper examines the evolution of granitoid formations and their relationship to gold mineralization in the tectono-magmatic history of the Yenisei Ridge. Using regional geological, petrographic, structural, and geochronological evidence, it distinguishes synorogenic, late-orogenic, and post-orog…
This paper examines gold ore mineralization in the central Barguzin taiga and its genetic and spatial relationships with intrusive magmatic complexes. Based on field investigations conducted in 1962 to 1965, ore occurrence studies, and comparisons of native gold morphology and fineness from placers …
This paper examines the relationship between gold and gold-silver mineralization and hydrothermally altered rocks in Mesozoic to Cenozoic near-surface subvolcanic deposits of the eastern USSR. Using comparative observations from deposits associated with intermediate to basic and acidic to alkaline m…
This paper examines the distribution of gold and minor elements in hydrothermally altered volcanogenic rocks of the Belaya Gora gold ore deposit in the Lower Amur region. Based on analyses of 196 samples by fire assay, chemical spectral, chemical, and spectral methods, it compares unaltered and alte…
This paper examines whether gold contents in granitoid intrusions can serve as evidence for magmatic ore specialization. Using mainly neutron activation analysis, supplemented by spectrochemical determinations, the authors compare bulk rocks and more than 160 mineral separates from granitoid massifs…
This study examines gold distribution in basic and ultrabasic intrusive rocks from the Far East and the Indian Ocean, including dunite, harzburgite, gabbro, peridotite, kimberlite, layered nickel-bearing intrusions, and related olivine inclusions. Using spectrochemical analysis, the authors compare …
This study examines the occurrence, composition, and probable source of gold in rocks and ores of the Gusevogorsk titanomagnetite deposit within the Kachkanar intrusive complex of the Middle Urals. Systematic sampling and separation of native gold grains from ore-processing products showed that most…
This paper examines the disputed origin of gold, uraninite, and associated sulfides in Precambrian gold-bearing conglomerates, especially the Witwatersrand, in relation to sedimentary and hydrothermal interpretations. Drawing on geological distribution patterns, facies analysis, mineral associations…
This paper examines the relationship between gold mineralization and regional metamorphic and ultrametamorphic processes, with particular attention to Precambrian terrains. It argues that economically significant gold concentrations are most commonly associated with rocks of the greenschist facies, …
This paper examines genetic relationships between magmatic complexes and gold mineralization, distinguishing gold supplied by magmatic hydrothermal solutions from gold leached out of disseminated concentrations in the host magmatic rocks. It proposes a grouping of magmatic complexes by composition, …
This paper proposes a classification of gold-bearing ore-magmatic systems associated with granitoid magmatism, based on generalized observations from deeply exposed ore fields in Western Siberia, Kazakhstan, and the Urals. The authors argue that gold-ore fields should be treated as localized petrolo…
This paper outlines research problems in the genesis and geochemistry of gold ore deposits in light of improved analytical methods for detecting gold in rocks and ores. It argues that geochemical surveys can clarify gold distribution, inheritance of mineralization across geological periods, migratio…
The paper studies quasistatic boundary value problems in the linear theory of thermo-viscoelasticity with contact-type boundary conditions, using operator notation based on relaxation and creep kernels and the Laplace-Carson transform. It establishes uniqueness under standard positivity conditions o…
This paper studies nonlinear Hammerstein type equations of the form x + BFx = f in a complex Hilbert space, where F is a bounded hemicontinuous monotone nonlinear operator and B is a densely defined closed linear operator not assumed to be bounded or self-adjoint. Using monotonicity and coercivity h…
