| Lat / long: | 44.93679, -113.4628 |
| Primary: | Thorium |
| Secondary: | Copper, Uranium |
| Operation type: | Unknown |
| Deposit type: | QUARTZ VEINS |
| Production size: | None |
| Development status: | Prospect |
| Structure: | FAULTING OCCURED DURING TWO PERIODS: PRE-CHALLIS WHERE SMALL FAULTS TREND N25 - 40E, DIPPING STEEPLY NW, AND OTHERS TRENDING N15 - 20W. THE LONG YEARIAN FAULT (N 67 E, 68 SE) IS HORIZONTALLY OFFSET BY 6500 FT. POST CHALLIS FAULTING DEVELOPED THE LEMHI PASS (N70W STEEP), BULL MOOSE (N29-50W STEEP), AND DAN PATCH (N38W 50 - 90 SW) FAULTS. THESE THREE FAULTS CONVERGE AT THEIR NW TRENDS., BELT SERIES ROCKS REGIONALLY TREND SW AND DIP 20 TO 50 DEGREES GENERALLY TO THE NORTH. |
| Alteration processes: | BELT ROCKS ARE SLIGHTLY METAMORPHOSED AND SERITIZED. |
| MRDS | D003931 |
| DEP | 60000302 |
| Reference | {Deposit:: TRITES, A. F., AND TOOKER, E. W., 1953 , URANIUM AND THORIUM DEPOSITS IN EAST-CENTRAL IDAHO AND SOUTHWESTERN MONTANA: US GEOLOGICAL SURVEY BULL 988-H.}{Deposit:: SHARP, W. N., AND CAUENDER, W. S., 1962 , GEOLOGY AND THORIUM BEARING DEPOSITS OF THE LEMHI PASS AREA, LEMHI CO., IDA., AND BEAVERHEAD CO., MONT.,: US GEOLOGICAL SURVEY BULL 1126 .}{Deposit:: GEACH, R. D., 1972 , MINES AND MINERAL DEPOSITS (EXCEPT FUELS), BEAVERHEAD CO., MONTANA,: MONTANA BUR. OF MINES AND GEOLOGY, BULL 85 .}{Deposit:: STAATZ, M. H., 1972 , GEOLOGY AND DESCRIPTION OF THE THORIUM BEARING VEINS, LEMHI PASS QUAD., IDAHO AND MONTANA: US GEOLOGICAL SURVEY BULL. 1351 .} |
| Reporter | DOYLE, BRIEN (WELLS, JOHN) |