Phosphorites and the raw material apatite of Average Siberia

Igneous and hydrothermal-metasomatic complex deposits of the alkaline-ultrabasic formation, in which apatite is one of the useful minerals, are studied. The conclusion that the raw material base of the Tatarskoye deposit can be extended in the nearest future was made. Stratal phosphoorites are associated with siliceous-carbonate and сlastic= carbonate Vendian and clastic Ordovician and Devoman formatios. The development of the Sarzhakovskoye Vendian deposit is recommended. Mesozoic-Cenozoic carst phosphorites at the outcrops of the siliceous-carbonate formation - the Obladzhanskoye and the Seibinskoye ones - are top - priority objects for development because they can be used as phosphate meliorants.