Source of information: DonNTY, 2005.
Priazoviey is the eastern marginal block of the Ukrainian shield. It is carved out from adjacent Mediumpridneprovsky block by Orechovo-Pavlograd sutural zone. In its constitution are defined west and east microblocks II order, disjointed by the Centralpriazovsky interblock zone. Priazoviey has a rank of a rare-metallic subprovince. Two large periods are allocated in pre-cambrian history of the formation of the Priazovien rare-metallic mineralization. to which one there correspond two branches of the rare-metallic ore formation. With the first period is connected metamorphogenic rare-metallic ore formation in the Westpriazovsky microblock during Archean and Paleoproterozoic. In nuclear parts of dome patterns are reshaped acidic saltychansky and anadolsky granites containing great amount of orthite and monazit. Common feature for them is inheriting the geochemical characteristics of metamorphic rocks and geochemical specialization on rare earth. Most differentiated rare-metallic pegmatite place in trough patterns surrounding Saltychansky gneisose granite dome of the maiden order. The basis of their productivity is served the composition of primary sedimentary rocks, introduced high-alumina, carbonaceous and other crystalline shales of osipenkovsky series. The most of giant pegmatite fields are Shevchenkovsky and Steep Girder deposits.
The second period is necessary on mezo- and neo- Proterozoic, Paleozoic, Mesozoic and Cenozoic. Rare-metallic ore-grade mineraluization of this period is connected to repeated tectono-magmatic activatings of the Eastpriazovsky microblock and differs by large variety. The large part of fields has not clones among known of formation types. The most giant deposits of East Priazovien are known in the group of endogenic formations. To them, first of all, concern the fields and ore manifestation of magmatic genesis disposed in Centralpriazovsky structural - metallogenic zone. Their formation is connected to widespread occurrence of mezoproterozoic multiphase intrusions of a central type. The maximum concentration of infrequent units is characteristic for most late phase differentiates. A power source for deposit formation of this branch served the Eastpriazovsky pallial diapir fold. The ore-bearing formations characterize containing great amount of light constituents, enrichment alkalines, first of all by natrium, promoting concentration rare metals. There are the Azov zirconium - rareearth disposed in alkaline sienites of Volodarsky pluton, Mazurovsky and Kalinino-Shevchenkovsky zirconium-tantalum-niobium deposits of the October massif, Petrovo-Gnutovsky fluorite-rareearth deposit and large number show of ore. Its are connected with mezoproterozoic intrusive complexes different composition: gabbro - sienite, gabbro - nefelinesienite and subalkaline leucocratic of granites. The durable and the high energy potential of East Priazovien, connected with formation of Dneprovo-Donetsky paleorift, has supplied uniqueness of morphogenetic types rare-metallic of fields and show of ore.