Today, ALROSA, the world’s largest diamond producer, announced the results of a JORC-compliant audit of its mineral reserves and resources. The news came in the company’s press release received by Rough&Polished and saying that ALROSA was pleased to make this debut publication of the reserve audit carried out by Micon International Co. Ltd, an independent consultancy. The audit covered all major diamond fields of ALROSA, which represent about 70% of the company’s mineral resource base in Russia (under the Russian resource classification)*. ALROSA intends to provide periodic updates for the JORC-compliant audit and expand its scope to include other deposits in the future.
As of January 1, 2012, ALROSA’s JORC-compliant reserves reached 631 million carats at an average diamond grade of 1.31 carats per ton, while its total resources amounted to 968 million carats (of which measured and indicated categories accounted for 68%) at an average diamond grade of 1.31 carats per ton.
The following table summarizes the Reserves and Resources of ALROSA’s major assets as of January 1, 2012 (more detailed figures for each deposit are given in the Appendix below).
* ALROSA’s stake in Catoca Mining in Angola was not included in the audit.
ALROSA’S JORC RESERVES AND RESOURCES BY MINE
