Udachnaya open-pit mine (Udachnaya-Vostochnaya pipe; Udachnaya pipe),
Daldyn-Alakit kimberlite field
Sakha Republic (Yakutia)
This Locality on mindat.org
Discovered in 1955. As of 2010, Udachnaya pipe is controlled by Russian diamond company Alrosa, which planned to halt open-pit mining in favour of underground mining in 2010.
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