![]() The pipe was discovered in early 1955 and had a diameter of approximately 800 m and covered and area of some 7 ha, intruding Ordovician limestones. Mir was the first of the main Siberian mines. The grade at Mir varied from as high as 400 carats per hundred tonnes (cpht) to as low as 0.05 cpht, but averaged approximately 60 cpht of which around 25% were gem quality. Mirny Division in the Malaya - Botuobiya (or Mirny) Field, which comprises the mines on the now exhausted Mir pipe and the Internationalnaya (18 km WSW of Mir) pipe (#Location Mir - 62° 31' 36"N, 113° 59' 35"E). ![]() (ALROSA), exploit both kimberlite and alluvial deposits in the Yakutia region, in the Sakha Republic of Siberia, as follows: The diamondiferous pipes are found cutting platformal sequences overlying a crystalline basement which is at a depth of around 4 km, which decreases to the north.Ī series of diamond mining divisions of Almazy Rossii-Sakha Joint Stock Co. There ar etwo groups of kimberlites, namely the diamondiferous varieties which are over Archaean-Proterozic basement and non-diamondiferous, younger, pipes on the margins of the platform. Major diamond deposits are exploited over the north-esatern section of the largely concealed Yakutia Archaean Craton, which is exposed through younger Siberian Platform cover as the Anabar and Aldan Shields to the north and south respectively, in eastern Siberia. No hard copy book more than AUD $44.00 (incl. ![]() ![]() Yakutia Diamonds - Mirny, Mir, International, Aikhal, Jubileynaya, Udachny, Nyurba, Verkhne-Munskoye PorterGeo Database - Ore Deposit Description ![]()
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