Composition, chemical and typomorphic signs of accessory minerals of Devonian diamondiferous deposits of South and Middle Timan

The article presents а characteristic of accessory minerals diamondiferous deposits of South and Middle Timan. Typomorphic signs of separate minerals-indicators which indicate that diamond-bearing deposit of the Timan are primary sedimentary terrigenous rocks which have passed a stage of crusting accompanied by metasomatic transformations Finally, the conclusion affinity o of primary sources of a diamond-bearing deposit has been made about was indicated as a result of geological and mineralogical researches.