Choir Depression
Depression near Choir, Mongolia
From Wikipedia, the free encyclopedia
The Choir Depression is a depression near Choir, Mongolia. It is about 150 km long and 10 to 20 km wide, about 500 m lower than the surrounding upland.[1] It lies at an altitude of 1269 m.
Choir Depression | |
|---|---|
  Choir Depression  Choir Depression | |
| Coordinates: 46°22′N 108°22′E |
Uranium mines
Uranium prospecting began in the Choir Depression in 1955, and the Haraat deposit (of uranium trioxide), identified in 1970, began major drilling in 1988.[2] Following new discoveries in 1997, there is estimated to be 8165 t (18 million lbs.) of uranium trioxide in the depression.[3] In early 1994, the area was licensed to the Gurvan Saihan Joint Venture, with a 70% interest by Denison Mines, and 15% each from the Mongolian government and a Russian state geological concern.[4][5] Rail lines connect the Trans-Mongolian Railway with the mine.
