ogical and information models for forecast and rapid assessment of new gold deposits in the Arctic zone of Russia

Based on the results of field research, as well as data from stock reports, two types of placer gold were identified within the Vagran placer cluster, which are indicators of primary mineralization. They are used as benchmarks for developing a digital system for predicting parameters and localizing primary sources of placer gold. Formalized typomorphic characteristics of placer gold (size, roundness, fineness, sorting and content of impurity elements), combined in multiplicative indicators, make it possible to forecast the composition and localization of the primary mineralization with greater confidence than ordinary parameters separately. The data required for such an assessment do not require additional field and highly qualified laboratory studies, they are contained in standard reports on the heavy minerals testing, and, in contrast to the characteristics of individual indicator types of placer gold, they give more stable results. The study of the correlation system allowed to identify characteristic indicators for the primary mineralization of gold-sulfide-quartz and hypogenic-hypergenic types, and to give recommendations for conducting prospecting and exploration in order to identify the primary gold content of the cluster. The proposed method of creating forecast estimates allows to computerize the process of determining the prospects for primary mineralization of territories.

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Search-Oriented Technique of the Numerical Forecasting of the Rare-Metal Proximal (Near Drift) Placers: Evidence From the Lovozero Placer District

Chefranov,

Lalomov,

Chefranova

2023

Geologiâ rudnyh mestoroždenij

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Rare metals (including rare earth metals) are significant raw materials which determine technical and scientific level of development of the industry; first of all – innovative technologies. An important source of rare metals can be a group of unique in genesis and mineral composition of loparite placers associated with the Lovozero massif of nepheline syenites (Cola peninsula). In the present work Within the Northern periphery of the Lovozero massif, which includes the Revda placer deposit, the authors have identified the main factors controlling the formation of proximal (near drift) rare-metal loparite placers. They have performed the formalization (numerical evaluation) of this factors and developed multiplicative indicators that reflect the placer potential of territories. To assess the effectiveness of the proposed technique based on the developed multiplicative coefficients, independent forecasts of placer metal content for the western and eastern placer-bearing areas of the Revda group of placers were calculated. For additional verification of the technique, the paper compares the obtained results with similar forecasts obtained using the methods of Linear Regression and Random forest of Regression trees. The developed method allows automating the process of forecasting of placer parameters, which is especially important for assessing deep-seated placers that are difficult to search and exploration and are not shown on the surface.

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ogical and information models for forecast and rapid assessment of new gold deposits in the Arctic zone of Russia

Cited by 3 publications

References 2 publications

A Search-Oriented Method of Numerical Forecasting of Rare-Metal Proximal (Close-to-Source) Placers: Evidence from the Lovozero Placer District

A Search-Oriented Method of Numerical Forecasting of Rare-Metal Proximal (Close-to-Source) Placers: Evidence from the Lovozero Placer District

The development of numerical forecasting systems of primary sources of gold on the results of placer sampling in the example Vagran placer cluster (North Urals)

Search-Oriented Technique of the Numerical Forecasting of the Rare-Metal Proximal (Near Drift) Placers: Evidence From the Lovozero Placer District

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