- Issue
- Journal of Siberian Federal University. Engineering & Technologies. 2013 6 (4)
- Authors
- Tsykin, Rostislav A.
- Contact information
- Tsykin, Rostislav A.: Siberian Federal University, 79 Svobodny, Krasnoyarsk, 660041 Russia; e-mail:
- Keywords
- apatite; francolite; pirochlore; kolumbite; vermiculite; krust of weathering; covered karst
- Abstract
The Yenisey Ridge Proterozoic carbonatite and metasomatite unit developed in the belt of near-meridian strike, 20×2-5 km in size, is described. Dolomite carbonatites host en echelon beds of pyrochlore-apatite ores with the average Nb 2 O 5 grades 0.23 % and the average P 2 O 5 grades 4.71 %. Apatite beds are locally developed. As for metasomatites, muscovite-biotite mica is of specific interest. Cretaceous-Paleocene kaolinite-hydromica weathering crusts of aluminum silicate rocks and polygenetic unconsolidated compositions on carbonatites, representing vermiculite-clayey ochers in combination, are developed in the northern part of the productive zone. Crandallite-bearing ochers with higher Nb 2 O 5 grades are developed in the southern part in the aleurite ferriferous material. In the northern part of the zone the pit mines granular ores consisting of pyrochlore and columbite crystals in the francolite-vermiculite-clayey material. Vermiculite and francolite are stored in special dumps. The author recommends using phosphates of bedrock deposits, special dumps and slimes as a resource for fertilizer production.
- Pages
- 365-373
- Paper at repository of SibFU
- https://elib.sfu-kras.ru/handle/2311/9847
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).