Белая гора

Белая гора


Phase: operations
Mine Type: pit

Tags: stockwork

Gold Map

Россия, Хабаровский край. Located in Nikolaevsky district of Khabarovsk Territory on the left bank of the Amur River. The regional city centre of Nikolaevsk-on-Amur is 50 km from Belaya Gora. The deposits are located 39 kilometres apart and are connected by a municipal road. The Mnogovershinnoe mine is located about 70 km from Belaya Gora.

History:

Gold mineralization in the Belaya Gora deposit area was first identified at the end of the 19th century with the discovery of placers in the surrounding watercourse basins.

Some exploration was conducted in the 70s and 80s, with the last detailed exploration stage undertaken between 2006-2008.

Production started in 2010 with ore processed at the Mnogovershinnoe plant (some 70 km away).

In 2013 a processing plant was constructed at Belaya Gora and production rates increased to planned 2.2 Mtpa. The original TEO of Permanent Conditions was prepared in 2008 and was updated in 2016.

Deposit geology:

The genesis of Belaya Gora mineralisation corresponds to the same name extrusion which is developed east from the deposit. The mineralisation is hosted by volcanogenic and volcanoclastic rocks which been altered hydrothermally and transformed into secondary quartzites.

Three mineralisation zones have been defined at the deposit: Stockwork, Pologaya and North-East. The Pologaya zone has already been mined out.

Mineralization has a veinlet-disseminated, pocket character and is associated with quartz veinlets and veins. Gold distribution is extremely irregular and enriched areas are sporadic and unrelated to each other.

Grain size distribution analysis of technological samples showed that native gold in ores is distributed non-uniformly, and is mainly represented by -0.25+0.74 mm size with individual grains up to 0.8 mm.

The ore texture and structure are similar for all zones while Pologaya and North-East ores are dominated by kaolinite and smectites due to more active hypergenesis processes.

Note:

The official resource estimate for Belaya Gora deposit was performed in accordance with GKZ (State Committee for Resources) methodology and approved in 2016. Resources with gold grades greater than 0.3 g/t within the pit were classified as both On-Balance and Off-Balance. Resources outside of the pit were classified as Off-Balance. Minimum mineralization thickness was 5 m, maximum thickness of waste interlayers was 5 m. The approved resources amounted to 12.1 Mt of ore with average grade of 1.89 g/t.

The previous Mineral Resource Estimate prepared in accordance with the JORC Code was estimated by Micromine in 2010 at 14 Mt of ore with average grade of 2.2 g/tforthe Stockwork zone and 1.3 Mt at the average grade of 3 g/t for the Pologaya zone.

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