Mineral resources base

ALROSA Group operates in Western Yakutia and the Arkhangelsk region developing primary and placer deposits of diamonds

As of July 1, 2016, ALROSA Group’s reserves under JORC Code amounted to 653 million carats at the average grade of 1.30 carats per ton of ore; the resources overall total was 1 030 million carats (73% are measured and indicated) at the average diamond grade of 1.08 carats per ton of ore.

ALROSA Group conducts mining operations on primary kimberlite pipes and placer diamond deposits. Below is the brief description of the main diamond deposits operated by ALROSA Group that were assessed under JORC.

MIRNY MPD

Internatsionalnaya (Inter) pipe

Internatsionalnaya kimberlite pipe was discovered in 1969; it is a primary deposit that differs from all known diamond deposits of Western Yakutia by larger crystal size and high diamond ore grade with these parameters substantially exceeding those of other deposits. The pipe is located in the basin of the Irelyakh river, in the upper reaches of its right tributaries, Ulakhan-Yuryakh and Machchoba-Salaa creeks, 16 km southwest of Mirny town.

Today it is being developed by underground mining method; open-pit mining completed in 2011.

Internatsionalny became the first underground mine of ALROSA Group. The experience acquired in implementation of design engineering solutions at the mining division prompted further development of underground mining technology at other facilities of the Group.

Mir pipe

Mir kimberlite pipe was discovered in 1955. Diamond content of the pipe is high and the average diamond grade exceeds 3 carats per ton. It is located in the left bank area of the middle course of Irelyakh river within the limits of Mirny town.

Mir pipe has being developed by underground mining method since 2009; open-pit mining completed in 2001.

In 2016 Mir underground mine reached its design capacity – 1 million tons of ore

Alluvial deposits and technogenic reserves (i.e. tailing dumps)

Besides primary deposits Mirny MPD includes Vodorazdelnye Galechniki, Gornoye and Irelyakh alluvial mines and Tailings of the processing plant No. 5 technogenic mine.

UDACHNY MPD

Udachnaya pipe

Udachnaya pipe was discovered in 1955. Open-pit mining was started in 1971 and is still underway. The pipe is located in Udachny town, 550 km north of Mirny town and consists of Western and Eastern ore bodies adjoining in the near-surface part.

The underground mine Udachny was commissioned in 2014. Reaching its design capacity of 4 million tons of ore per year, Udachny will become and one of the largest worldwide.

Zarnitsa pipe

Zarnitsa kimberlite pipe was discovered in 1954 and is the first primary diamond deposit discovered in Russia. It is located 14 km east of Udachny town. In 1988-98, the deposit was on a trial run, commercial development started in 1999.

Alluvial deposits

In 2016 ALROSA has started the construction of service lane and infrastructure facilities at Verkhne-Munskoe deposit.

AIKHAL MPD

Aikhal pipe

Aikhal kimberlite pipe was discovered in 1960. It is located 395 km north of Mirny town, in close proximity to Aikhal settlement.

It has been developed by underground mining method since 2005; the open-pit mining completed in 1997.

Komsomolskaya pipe

Komsomolskaya kimberlite pipe was discovered in 1974. It is located 490 km from Mirny town and 17 km from Aikhal settlement.

Open-pit mining was started in 2000. Low diamond grade at sufficiently high quality of rough diamonds is characteristic for the deposit.

Yubileynaya pipe

Yubileynaya kimberlite pipe was discovered in 1975; it is rated among the largest primary diamond deposits both in Yakutia and abroad. The pipe is located 485 km north of Mirny town and in close proximity to Aikhal settlement.

Open-pit mining was started in 1989.

NYURBA MPD

Nyurbinskaya (Nyurba) pipe

Nyurbinskaya pipe was discovered in 1994 and is rated among the largest pipes on the balance sheet of ALROSA. It is located in close proximity to Nakyn settlement (rotation camp), some 200 km northwest of Nyurba town and 320 km northeast of Mirny town.

Open-pit mining was started in 2001; the pipe is characterized with high diamond content.

Botuobinskaya pipe

Botuobinskaya pipe is located some 3 km southwest of Nyurbinskaya pipe. The Botuobinskaya pipe contains many gem and near-gem quality diamonds with a high transparency and low proportion of colored stones.

In 2015, Botuobinskaya pipe started ore mining. Diamond production at the pipe will exceed 2 million carats when it reaches its design capacity of 400 thousand tons of ore per year.

Nyurbinskya and Botuobinskya placer deposits

The Nyurbinskoye placer deposit is a fragment of a buried Verkhne-Dyakhtarskaya placer. It is a placer localized in the immediate vicinity of the Nyurbinskaya pipe primary deposit, which is a source of diamonds.

The Botuobinskaya placer deposit was explored during detailed exploration of the Botuobinskaya kimberlite pipe. It is closely associated with the kimberlite pipe, both spatially and in origin, adjoining it on the southwest flank.

LOMONOSOV MPD (PJSC Severalmaz)

Arkhangelskaya pipe

The pipe was discovered in 1980; it is located in the Arkhangelsk region 100 km northeast of Arkhangelsk city.

Open-pit mining started here in 2005.

Karpinskogo-1 pipe

The pipe is located 750 m northeast of Arkhangelskaya pipe.

Stripping operations at the pipe were held from 2009; in 2014, diamond mining started at Karpinskogo-1.

JSC ALMAZY ANABARA

The deposits of this enterprise are located in the northwestern part of the Republic of Sakha (Yakutia), within the territory of several uluses (districts). The diamond mining is conducted at 7 placers: Morgogor, Istok, Holomolokh, Ebelyakh, Gusinoye, Ruchey 41 and Kurung-Yuryakh.

JSC NIZHNE-LENSKOYE

The enterprise conducts mining at placer deposits Molodo and Billyakh that are located on the territory of Bulunsky and Anabarsky uluses (districts) of Yakutia, not far from OJSC Almazy Anabara.

Billyakh placer diamond deposit is located in the southern part of Anabarsky ulus (district) of the Republic of Sakha (Yakutia), 320 km of the Arctic Ocean coast in the basin of the middle-high course of Billyakh river, a tributary of Anabar river. The placer development started in 1999.

Molodo placer diamond deposit is located in the north of the Republic of Sakha (Yakutia) on the territory of Bulunsky ulus with the administrative center in Tiksi town. Exploration and mining at the placer was started in 1997.

This page was last updated on 27 August 2013 at 14.04