Theoretical basis for forecasting and exploration of primary diamonds deposits of tuffizit type

The actual problem of genesis of diamond deposits of the Ural-Timan province, wrongly interpreted over a long period of time within the model of formation of placers and intermediate collectors is considered. It is shown that many geological, petrographic and mineralogical and geochemical properties of diamond deposits of the Ural type testify to their primacy and belonging to tuffisite facies of mantle kimberlite-lamproites. Convergence of a number of geological properties of these objects is explained by enrichment of diamond-bearing magmatic material by substance of sedimentary rocks during fluid-explosive eruption. The terminology and taxonomy of levels of organization in the range from individual tuffisite body to the regional fluid-explosive structure is considered. Recommended forecast-search complex of research includes the analysis of the density structure of the cross-section in gravitational field, gravity prospecting, electric prospecting, combined with magnetometry, ground radiometry and gamma-spectrometry, a method of geological and petrographic diagnostics, especially of the anomalous geochemical field.