4-2024

CONTENTS # 4/2024

DOI: 10.53085/0034-026X_2024_4_ 04

УДК 553.495:553.075:553.065:553.04

Mashkovtsev G.A., Karmanov E.N., Lugovskaya I.G., Grebenkin N.A., Nesmeyanova A.I., Ovsyannikova T.M., Rzhevskaya A.K., Tuboltsev I.S. (VIMS)

SCIENTIFIC AND METHODOLOGICAL BASICS OF PREDICTION AND MINERAGENIC STUDIES ON VENINE-STOCKWORKS URANIUM DEPOSITS

The article provides: a rationale for the relevance of predictive mineragenic research (PMS) in connection with the acute shortage of prospecting areas for uranium and other strategic minerals; main characteristics of the expected vein-stockwork objects; main directions and sequence of research; ore-bearing criteria for objects of the Streltsovsky type and the «unconformity» type; methods and technologies for conducting PMI. The final part of the article presents methodological approaches to delineation and geological and economic quantitative assessment of predicted uranium resources of category Р₂ of promising local subsoil areas allocated for prospecting and prospecting work.

Keywords: predictive and mineragenic studies, vein-stockwork mineralization, ore-bearing criteria,
hydrothermal-metasomatic changes in rocks.

P. 4-15

DOI: 10.53085/0034-026X_2024_4_16

УДК 550.8:528:553.495

Mironov Yu.B., Fuks V.Z. (Karpinsky Institute)

PRIORITY TERRITORIES FOR PROSPECTING AND PREDICTIVE-METALLOGENIC WORK ON URANIUM, IDENTIFIED ON THE RESULTS OF THE GEOLOGICAL SURVEY WORKS

The results of recent years on the allocation of the promising areas for carrying out the predictive-metallogenic and prospecting work on uranium in the Siberian and Far Eastern districts of the Russian Federation are considered. A brief description of objects indicating the ore formation and its geological-industrial type is given. Information on the predicted resources of the promising objects is provided.

Keywords: uranium, promising areas, ore formations, geological-industrial types, predicted resources.

P. 16-24

DOI: 10.53085/0034-026X_2024_4_25

УДК 553.495;553.078.2 (571.115)

Molchanov A.V.¹, Lazarev F.D.², Kirplyuk P.V.², Onishchenko A.N.², Ledengskiy R.A.², Lazarev A.F.² (1 — FGBU «Karpinsky Institute», 2 — NF FGBU «Karpinsky Institute»)

PROSPECTS FOR IDENTIFYING «UNCONFORMITY» TYPE URANIUM DEPOSITS ON THE SHIELDS OF THE SIBERIAN PLATFORM

The article, based on the analysis of geological and geophysical data, discusses the possibility of identifying «unconformity» type uranium deposits within the zones of ancient structural-stratigraphic unconformities of the Aldan and Anabar shields of the Siberian platform. Specific areas have been outlined for large-scale forecasting, metallogenic and prospecting works.

Keywords: uranium, «unconformity» type deposits, Aldan and Anabar shields, prospects.

P. 25-37

DOI: 10.53085/0034-026X_2024_4_38

УДК 622.349.5

Danilov A.A.¹, Glass I.D.¹, Zhuravlev V.G.², Ishmakova E.A.¹, Ovcharova E.S.¹, Rudenko A.A.³, Fomin V.Yu.² (1 — GRP LLC, 2 — JSC «Elkonsky MMC», 3 — JSC RUSBURMASH)

DISTRIBUTION FEATURES AND PROSPECTS OF MINING OF GOLD AND URANIUM ORES OF THE SEVERNOYE DEPOSIT

In the process of further exploration of the unique complex deposits of the Elkonsky ore district, a variety of technological types and grades of ores were revealed: non-oxidized and semi-oxidized gold-uranium with associated silver, vanadium and molybdenum; oxidized silver-gilded with associated uranium, zonally distributed in the context of deposits. The processing of oxidized ores is carried out in an open way, for non–oxidized ores, an underground mining method is being designed. To extract the main and associated components, it is necessary to use various technologies.

Keywords: Elcon, ore region, technology, uranium, gold, silver, vanadium.

P. 38-45

DOI: 10.53085/0034-026X_2024_4_46

УДК 553.04:378.1

Vercheba A.A.¹, Lugovskaya I.G.², Borovkov Yu.A.¹ (1 — MGRI, 2 –VIMS)

STAFFING FOR URANIUM GEOLOGY IS A NECESSARY CONDITION FOR EFFECTIVE REPRODUCTION AND DEVELOPMENT OF THE URANIUM MINERAL RESOURCE BASE

Aspects of the organization of scientific and technical cooperation between Russian enterprises of the uranium mining industry and universities and ways to increase the attractiveness of the mining engineer profession are considered.

Keywords: personnel, resources, education, science, uranium.

P. 46-51

DOI: 10.53085/0034-026X_2024_4_52

УДК 551.4.044:528.88:551.2:553.49

Ustinov S.A., Petrov V.A., Minaev V.A., Chepchugov A.M., Svecherevskiy A.D., Kochkin I.A. (IGEM RAS)

FORECAST AND PROSPECTING MODEL OF THE TUYUKAN URANIUM ORE CLUSTER AREA BASED ON THE EARTH REMOTE SENSING DATA AND STRUCTURAL-TECTONOPHYSICAL APPROACH

Based on the author’s approach using geoinformatic technologies, processing of Earth remote sensing data, using structural-geomorphological, spatial-geometric, spatial-density and tectonophysical methods for the Tuyukan uranium ore cluster it was possible to identify specific features of the development of the framework of faults, formulate and spatially visualize structural and tectonophysical criteria that determine the location of ore mineralization within the area. By standardizing and determining the weight coefficients of each criteria, a digital structural weight of evidence model was created, the accuracy of which, based on comparison with reference ore objects, was 81 %. This model serves as an important basis for a clearer setting of prospecting geological exploration work, primarily for uranium, within the boundaries of the state geological map O-49-XII.

Keywords: weight of evidence model, uranium, Earth remote sensing data, structures of ore fields and deposits, tectonophysics, stress-strain field, mineral-forming system, Patom Highland, Tonod uplift, Tuyukan ore cluster.

P. 52-65

DOI: 10.53085/0034-026X_2024_4_66

УДК 553.495

Danilenko A.S., Vasilevskiy P.Yu., Ermakova D.A., Dedyulin I.N. (VNIPIpromtekhnologii)

REASSESSMENT OF THE URANIUM RESOURCE BASE OF PROSPECTIVE AREAS OF THE VITIMSKY URANIUM MINE DISTRICT, TAKEN INTO ACCOUNT OF THE SITUATION LEVEL OF THE PRODUCTIVE AQUIFER AND THE BOTTOM OF PERFORMANCE ROCKS

The article is devoted to assessing the increase in the uranium resource base of the Vitim uranium ore region due to the involvement of low-water deposits in the development. The authors carried out work to create a database of geological exploration results and develop a regional geofiltration model. As a result of modeling, maps of the roof and levels of the productive horizon were obtained. Comparison of maps made it possible to delineate poorly watered deposits, assess their resources and formulate recommendations for additional study of hydrogeological conditions.

Keywords: groundwater modeling, calibration, permafrost rocks, poorly watered areas, resource assessment, in-situ leaching, uranium.

P. 66-77

DOI: 10.53085/0034-026X_2024_4_78

УДК 553.495 (553.07)

Kochkin B.T. (IGEM RAS)

HYDRODYNAMIC URANIUM MINERAL SYSTEMS AS A BASIS FOR FORECASTING ANCIENT SANDSTONE TYPE DEPOSITS

Hydrodynamic systems of various natures are activated in the zones of convergent interaction of tectonic plates and, under certain conditions, the processes of uranium ore formation in the sedimentary cover are concentrated on their boundaries. Historical reconstructions based on plate tectonics can be used as the basis for forecasting areas favorable for the formation of ancient sandstone type uranium deposits.

Keywords: uranium, sandstone type deposits, hydrodynamic systems, predictive criteria.

P. 78-83

DOI: 10.53085/0034-026X_2024_4_84

УДК 546.791.027:553.495 (477+672.4)

Bakhur A.E., Pechenkin I.G. (VIMS)

VIMS RESEARCH TO TEST THE HYPOTHESIS OF A POSSIBLE SHIFT IN THE ²³⁵U/²³⁸U ISOTOPE RATIO IN NATURE AND THE USE OF THIS PHENOMENON IN THE SEARCH FOR ANCIENT RICH URANIUM DEPOSITS

It was experimentally confirm the possibility of ²³⁵U/²³⁸U ratio shift in uranium ores, using the example of research by VIMS employees in 1970–1972 of the Severinskoye uranium deposit in the northern part of the Kirovograd uranium ore district. It varied towards both the «burnout» of ²³⁵U and its accumulation, depending on the conditions of mineralization localization and the nuclear transformations taking place in it. Information from the French Commissariat of Atomic Energy (CEA), on the discovery of a natural self-sustaining nuclear fission reaction on September 25, 1972, only confirmed the experimental results and conclusions of the VIMS scientists obtained earlier.

Keywords: VIMS, uranium isotopes, sodium-uranium (albitite) formation, Severinskoye deposit, Oklo phenomenon.

P. 84-92

DOI: 10.53085/0034-026X_2024_4_93

УДК 622.772: 622.791: 669.822: 571.54/55

Avdonin G.I., Saltykov A.S., Prozorova M.V., Chepchugov A.M., Gryaznov V.M., Konoplev A.V., Loginov A.V. (VIMS)

THE EXPERIENCE OF MINERAL AND TECHNOLOGICAL TESTING AND GEOTECHNOLOGICAL STUDIES OF ORES AT THE TUYUKANSK DEPOSIT

The article presents the results of low-volume mineralogical and technological testing conducted for the first time at the Tukan uranium deposit with the isolation of natural types of ores and their geotechnological research. As a result: the technological types of ores — granite and shale — have been identified; the features of uranium extraction have been determined. An increased percent-age of extraction was obtained with the predominance of proprietary uranium minerals in the ores, and underexploitation — with the predominance of sorbed (in titanates), impurity (in accesso-ry) and multicomponent gel forms of uranium. The urgency of processing uranium ore of granite composition by heap leaching is emphasized.

Keywords: low-volume mineralogical and technological testing, geotechnological properties of ores, mineral forms of a useful component, sulfuric acid leaching.

P. 93-103

DOI: 10.53085/0034-026X_2024_4_104

УДК 622.277

Ivanov A.G.¹, Arsentev Yu.A.², Ivanov D.A.³, Nekoz S.Yu.² (1 — Vnipipromtechnologies JSC, 2 — RGGRU-MGRI, 3 — Weatherford Company)

FEATURES OF WATERPROOFING OF THE BACKWATER SPACE OF TECHNOLOGICAL WELLS OF UNDERGROUND URANIUM LEACHING

High-quality waterproofing of technological wells of borehole underground uranium leaching using cement mortars is the key to ensuring its trouble-free operation during the period of field development. In this paper, an overview of the works and recommendations for ensuring high-quality waterproofing of the backwater space of technological wells, including the use of polymer pipes as production columns, is carried out. Recommendations for the performance of well cementing work and calculations of the technological parameters of the work are given.

Keywords: technological wells, polymer casing pipes, cement mortar, waterproofing quality, factors of high-quality cementing.

P. 104-109

DOI: 10.53085/0034-026Х_2024_4_110

УДК 338.28:553.495 (470.638)

Yakushina O.I., Pechenkin I.G., Lugovskaya I.G. (VIMS)

URANIUM ORE DISTRICT OF THE CAUCASIAN MINERAL WATERS CONTRIBUTION OF VIMS SPECIALISTS TO ITS FORMATION

The article highlights the role of VIMS specialists in the study of uranium deposits of a previously unknown genetic type in the area of Caucasian Mineral Waters. Not only the Beshtaugorskoye and Bykogorskoye deposits were discovered, but also ore extraction and processing were carried out in record time, due to the country’s high demand for uranium. In addition, new minerals have been identified and an original luminescent search method (including nighttime luminescence) has been developed.

Keywords: VIMS, Caucasian Mineral Waters, uranium, Beshtaugorskoye deposit, Bykogorskoye deposit, luminescent method.

P. 110-117