Reserves and Resources

The following tables summarize Reserves and Resources of ALROSA in accordance with JORC Code.

Diamond Mineral Resources as at 1 July 2016

Deposit Resource category Tonnage
('000 t)
Resource grade
(cpt)
Contained diamonds
('000 cts)
Udachny division
Udachnaya Pipe Measured 13,646 1.16 15,812
Indicated 83,524 1.53 127,801
Inferred 53,991 1.28 68,978
Zarnitsa Pipe Indicated 27,131 0.25 6,858
Verkhne-Munskoe Deposit Indicated 46,914 0.65 30,616
Inferred 17,168 0.57 9,857
Kluch Piropovy Placer and Zakonturnaya Deluvial Placer Indicated 2,447 0.49 599
Inferred 367 0.52 96
Verkhne-Munskoe Deposit (alluvial) Inferred 809 0.68 277
Aikhal division
Jubilee Pipe Measured 18,420 0.86 15,815
Indicated 88,138 0.74 65,401
Inferred 57,821 0.63 36,352
Aikhal Pipe Measured 4,361 4.97 21,666
Indicated 690 3.14 2,168
Inferred 1,716 4.06 6,966
Komsomolskaya Pipe Indicated 3,943 0.38 1,494
Zaria Pipe Indicated 12,392 0.28 3,515
Inferred 27,347 0.13 3,583
Mirny division
Mir Pipe Measured 20,104 3.71 74,521
Indicated 16,538 3.36 55,525
Inferred 1,072 3.11 3,339
International Pipe Measured 1,448 8.21 11,888
Indicated 3,544 8.71 30,848
Vodorazdelnye Galechniki Placer Indicated 1,408 0.66 468
Inferred 440 0.40 88
Irrelyakh Placer Measured 4,776 0.41 990
Indicated 20,865 0.18 1,854
Gornoye Placer Measured 12,733 0.38 2,389
Solur-Vostochnaya
Solur-Vostochnaya Placer Indicated 5,982 1.97 5,903
Inferred 959 1.80 865
Nyurba division
Nyurbinskaya Pipe Measured 1,432 4.12 5,905
Indicated 7,095 4.32 30,623
Inferred 1,217 5.56 6,767
Botuobinskaya Pipe Measured 3,172 5.30 16,827
Indicated 10,139 5.90 59,814
Inferred 2,762 5.71 15,778
Maiskoye Kimberlite Body Indicated 1,231 6.03 7,426
Inferred 1,768 2.99 5,278
Nyurbinskaya Placer Measured 187 7.85 734
Indicated 6,129 5.13 15,717
Inferred 4,762 3.01 7,158
Botuobinskaya Placer Indicated 768 0.98 377
Lomonosov division (PAO Severalmaz)
Arkhangelskaya Pipe Measured 18,231 0.97 17,764
Indicated 29,689 1.08 32,184
Inferred 39,407 1.24 48,941
Karpinsky-1 Pipe Measured 6,971 1.08 7,501
Indicated 6,915 1.72 11,893
Inferred 8,615 1.16 9,993
Pionerskaya Pipe Indicated 58,330 0.47 27,530
Inferred 42,875 0.52 22,502
Lomonosov Pipe Indicated 32,523 0.50 16,230
Inferred 42,250 0.46 19,530
AO Almazy Anabara
All Evaluated Deposits Indicated 38,160 1.33 25,373
Inferred 9,366 0.77 3,621
AO Nizhne-Lenskoe
All Evaluated Deposits Indicated 10,793 0.57 3,075
Inferred 16,068 0.58 4,661
Total for ALROSA Group of Companies
All Deposits covered by the Report Measured 105,482 1.82 191,811
Indicated 515,285 1.09 563,291
Measured + Indicated 620,767 1.22 755,102
Inferred 330,779 0.83 274,629
Total 951,546 1.08 1,029,731
Note: placer sand volumes have been converted to tonnages using a dry bulk density of two tonnes of ore per cubic metre of placer sand.

Diamond Ore Reserves as at 1 July 2016

Deposit Reserves category Tonnage
('000 t)
Resource grade
(cpt)
Contained diamonds
('000 cts)
Udachny division
Udachnaya Pipe Proved 14,406 1.06 15,335
Probable 69,410 1.37 94,894
Zarnitsa Pipe Probable 27,303 0.25 6,857
Verkhne-Munskoe Deposit Probable 46,758 0.65 30,465
Kluch Piropovy Placer and Zakonturnaya Deluvial Placer Probable 2,946 0.41 599
Aikhal division
Jubilee Pipe Proved 18,892 0.84 15,806
Probable 65,106 0.84 54,387
Aikhal Pipe Proved 4,792 4.45 21,330
Probable 758 2.82 2,134
Komsomolskaya Pipe Probable 4,006 0.37 1,490
Zaria Pipe Probable 12,333 0.28 3,469
Mirny division
Mir Pipe Proved 20,028 3.42 68,538
Probable 17,715 3.12 55,315
International Pipe Proved 1,568 7.55 11,840
Probable 3,836 8.01 30,725
Vodorazdelnye Galechniki Placer Probable 1,554 0.60 468
Irrelyakh Placer Proved 5,515 0.36 990
Probable 22,284 0.16 1,834
Gornoye Placer Proved 13,738 0.34 2,328
Nyurba division
Nyurbinskaya Pipe Proved 1,501 3.92 5,882
Probable 7,437 4.10 30,503
Botuobinskaya Pipe Proved 3,325 5.04 16,761
Probable 10,629 5.61 59,580
Maiskoye Kimberlite Body Probable 1,327 5.46 7,242
Nyurbinskaya Placer Proved 188 7.79 733
Probable 6,176 5.09 15,716
Botuobinskaya Placer Probable 832 0.91 376
Lomonosov division (PAO Severalmaz)
Arkhangelskaya Pipe Proved 18,315 0.97 17,735
Probable 29,835 1.08 32,130
Karpinskogo-1 Pipe Proved 7,002 1.07 7,489
Probable 6,949 1.71 11,873
AO Almazy Anabara, All Evaluated Deposits Probable 41,399 1.23 25,373
AO Nizhne-Lenskoe, All Evaluated Deposits Probable 12,800 0.48 3,075
Total for ALROSA Group of Companies
All Deposits covered by the Report Proved 109,270 1.69 184,768
Probable 391,392 1.20 468,505
Total 500,662 1.30 653,274
Note: placer sand volumes have been converted to tonnages using a dry bulk density of two tonnes of ore per cubic metre of placer sand.

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This page was last updated on 7 November 2013 at 18.55