Choir Depression
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.
Notes
- Denison Mines (December 2006). "Annual Information Form" (PDF). p. 62. Archived from the original (pdf) on 2007-09-28. Retrieved 2007-07-24.
- International Uranium Corp (March 2000). "Annual and Transition Report". Archived from the original on 2007-09-30. Retrieved 2007-07-24.
- "International Uranium Corporation Announces 1997 Exploration Results in Mongolia - New 10 Million Pound Uranium Deposit Delineated". 1998-02-18. Retrieved 2007-09-25.
- "Denison Announces NI 43-101 Resource Estimate on Hairhan Deposit in Mongolia". Yahoo! Finance. March 13, 2000. Retrieved 2007-07-24.
- "Exploration and Development: Mongolia". Denison Mines. Archived from the original on 2007-07-11. Retrieved 2007-09-25.
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