| Udachnaya pipe | |
| Width: | 300px |
| Pushpin Map: | Russia Sakha Republic#Russia |
| Pushpin Label: | Udachnaya pipe |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Sakha Republic, Russia |
| Coordinates: | 66.4333°N 131°W |
| Place: | Mirninsky District |
| Subdivision Type: | Federal subject |
| State/Province: | Sakha Republic |
| Country: | Russia |
| Owner: | Alrosa |
| Products: | Diamonds |
The Udachnaya pipe (Russian: тру́бка Уда́чная, literally lucky pipe) is a diamond deposit in the Daldyn-Alakit kimberlite field in Sakha Republic, Russia.[1] It is an open-pit mine,[2] and is located just outside the Arctic Circle at 66.4333°N 131°W.[3]
Udachnaya was discovered on 15 June 1955, just two days after the discovery of the diamond pipe Mir by Soviet geologist Vladimir Shchukin and his team.[4] It is about 640m (2,100feet) deep, making it the third deepest open-pit mine in the world (after Bingham Canyon Mine and Chuquicamata).[4]
The nearby settlement of Udachny is named for the deposit.
, Udachnaya pipe is controlled by Russian diamond company Alrosa, which planned to halt open-pit mining in favor of underground mining in 2010.[2]
The mine has estimated reserves of of diamonds and an annual production capacity of 10.4e6carat.[5]