quartz-metasomatites after K2-volcanics and quartz diorite (stock), andesite
Commodity and development information
Cu-Mo porphyry target discovered by L. Krasny and Y. Chemekov in 1951. Cu-pyrrhotite target Olgondo (Yellow hill) is located on the opposite bank of Olgondo River. Metasomatic zoning from stock away: (Bi+Qrtz) (Mu+Bi+Qrtz) (And+Mu+Qrtz) (Qrtz+Ser). There is 5-km-long NNE extended soil Mo anomaly (10 ppm Mo). Mineralization zone is 300 x 100 m. There is veinlet, disseminated, and lens shaped sulfide mineralization (pyrite, bornite, chalcopyrite(?), pyrrhotite; total 120%). Silicified rock with intensive impregnation of pyrite, chalcopyrite, bornite, covellite are recognized in northern direction for 45 km. Limonite (G+J) replaces not more then 50% sulfides at Olgondo-1 and Intensive limonitization (G+J) presents only on cracks at Olgondo (Yellow Hill).
Study area name
Andrei F. Chitalin (written commun., 2009); Rundkvist (2001)
Mihalasky, Ludington, Alexeiev, and others (2015)
Rundkvist, D.V., ed., 2001 , Mineragenic map of Russian Federation and adjacent states (with the boundaries of former USSR): Russian Federation Ministry of Natural Resources, State Research and Development Enterprise (Aerogeologica), 49 p., Excel workbook, and 1 map on 18 sheets, scale 1:2,500,000, CD-ROM.