Nepa

stratabound potash-bearing salt in Russian Federation

Geologic information

CountryRussian Federation
Location:108.2328, 59.2476
(click for info)
Site typearea
Deposit typestratabound potash-bearing salt
Evaporite basinEast Siberian
Basin typeintracratonic basin
Geologic unitAngara Fm-Gazhen beds
Age
Paleozoic
Cambrian
Minimum:Paleozoic-Cambrian
Maximum:Paleozoic-Cambrian
Commodities
Minerals
Potassium minerals:
Other minerals:
Notes:Potash mineralization confined to the SW flank of Nepa structure; abundant intrusive sills in area; potash is low in Mg and higher in Br and Rb than a seawater origin would indicate; sylvite is believed to have formed after carnallite.
Geologic map unit108.2328, 59.2476
Nearby scientific dataFind additional scientific data near this location

Economic information

Depth600-1300m
Production
StatusUnder Development (2000)
Estimates of reserves or resources
Ore tonnage1700 estMillion tonnes
K2O tonnage374 estMillion tonnes
Grade of K2O22% of ore
Data years1992
Data sourceIvanov and others (2000)

Reference information

Comments

Large deposit.

References

Borisenkov, V.I., Zyk, S.N., Galkin, G.A., and Volkova, N.N., 1988, Bromine patterns in the Early Cambrian potash beds of south Siberia: Geochemistry International, v. 25, no. 7, p. 100-107.
Golovkov, B.Y., 1990, Development of potash and salt in the USSR to enter Pacific Rim markets, in Griffiths, J.B., ed., 9th "Industrial Minerals" International Congress, Sydney, 1990, Proceedings: London, Chameleon Press, p. 159-164.
Ivanov, V.N., Nazaryev, V.A., and Neustroyev, V.L., 2000, The mineral resource base of the Irkutsk region; Development problems: Mineral Resources of Russia, Economics and Management, v. 2000, no. 4, accessed February 24, 2009, at http://geoinform.ru/?an=mrr1.Nokleberg, W.J., Bawiec, W.J., Doebrich, J.L., Lipin, B.R., Miller, R.J., Orris, G.J., and Zientek, M.L., 2005, Geology and nonfuel mineral deposits of Greenland, Europe, Russia, and northern central Asia: U.S. Geological Survey Open-File Report OF 2005-1294D, 173 p., accessed September 6, 2012, at http://pubs.usgs.gov/of/2005/1294/d/of2005-1294d.pdf.
Rundkvist, D.V., ed., 2001, Mineragenetic map of Russian Federation and adjacent states (within the boundaries of former USSR): Ministry of Natural Resources of Russian Federation, State Research and Development Enterprise "Aerogeologica", 49 p., 1 map on 18 sheets, scale 1:2,500,000.
Sintsov, A.V., and Migalkin, V.A., 1990, A new potash salt basin, the Lower Tunguska, in the Irkutsk Amphitheater: Transactions (Doklady) of the USSR Academy of Sciences, Earth Science Sections, v. 304, p. 95-98.
Zamaraev, S.M., Geletii, N.K., and Malykh, A.V., 1985, Temperature effect of traps on potassium salts of the Nepa potassium-bearing basin of east Siberia: Soviet Geology and Geophysics, v. 26, no. 4, p. 37-42.
Zveder, L.N., 1982, Prospects for the discovery of potassium salts in the Katanga and Igirma basins of the Siberian Platform: Soviet Geology and Geophysics, v. 23, no. 3, p. 103-105.