The forecasting and prospecting models of polychronous and polygenic gold deposits: Peculiarities of their development and representation

Forecasting and prospecting models of mineral deposits are traditionally compiled in tabular form accompanied with a graphic representation. The table considers the factors (criteria) of ore control (structural, lithological, metamorphic, etc.) and prospecting guides (geochemical, panned heavy-mineral concentrate mineralogical, geophysical, etc.) as attributive elements. Such tables usually “summarize” all the ore control factors, regardless of the duration of gold accumulation and the stage-by-stage nature of ore formation. This often leads to “mixing” of elements of different ages (including mutually exclusive ones), which hampers understanding the regularities of gold mineralization and complicates justification of an effective forecasting and prospecting complex. Therefore, the compilation of forecasting and prospecting models of polychronous and polygenic gold ore deposits should take into account characteristic features of each stage of the ore formation and should identify ore control factors for each of them.