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Nikolayevsky is a volcanic hosted massive sulphide deposit of the Rudny Altay Volcanic Arc of eastern Kazakhstan. The deposit is ~115 km WNW of Ridder, ~115 km east of Semey, 27 km south of the Russian border, and 45 and 10 km SE of the Orlovsky and Artemyevsky Cu-Zn deposits respectively (#Location: 50° 32' 0"N, 81° 52' 30"E).
The deposit was brought into production in 1964, and in 2009 treated 1.55 Mt of ore averaging 1.95% Cu and 2.98% Zn.
For details of the Rudny Altay Volcanic Arc, see the Orlova record.
Mineralisation largely comprises massive ore with lenses of disseminated material. The main ore lenses is generally 50 to 70 m thick, locally increasing at 80 to 100 m, and persists down dip for 600 m below its original outcrop to where it pinches out. It had an original NE-SW trending strike length of ~500 km and dips at 40 to 50°SE, flattening to sub-horizontal at lower levels.
Mineral resources remaining as at 1 January, 2011 were (IMC Group Consulting Ltd, 2011. Competent Persons Report to Kazakhmys Plc):
Measured resource - 3.114 Mt @ 1.31% Cu, 4.96% Zn, 0.25 g/t Au, 28.57 g/t Ag, 0.48% Pb;
Indicated resource - 4.311 Mt @ 1.28% Cu, 3.47% Zn, 0.43 g/t Au, 41.92 g/t Ag, 0.73% Pb;
TOTAL resource - 7.425 Mt @ 1.29% Cu, 4.10% Zn, 0.36 g/t Au, 36.32 g/t Ag, 0.62% Pb;
Ore reserves (same date and source - included in resource - Note reserves exceed resources ?)
TOTAL reserve - 7.992 Mt @ 1.03% Cu, 3.29% Zn, 0.28 g/t Au, 28.98 g/t Ag, 0.50% Pb.
This summary is drawn from the limited information in IMC Group Consulting Limited, 2011. Competent Persons Report on the Mining Assets of Kazakhmys Plc, Kazakhstan and Kyrgyzstan, Appendix III, 342p.
The most recent source geological information used to prepare this summary was dated: 2012.
This description is a summary from published sources, the chief of which are listed below.
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