| Deposit ID | 10101008 |
|---|---|
| MRDS ID | A015072 |
| Record type | Site |
| Current site name | Flat Creek |
| Alternate or previous names | Flat Creek and Marietta Basin, Marietta |
| Geographic coordinates: | -158.00876, 62.40217 (WGS84) |
|---|---|
| Relative position | SEE LOCATION COMMENTS |
Political divisions (FIPS codes)
Yukon-Koyukuk(Census area)
Alaska(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Iditarod B-5(quadrangle 1:63,360 scale)
Iditarod SW(quadrangle 1:100,000 scale)
Iditarod(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Alaska(hydrologic region)
Federal lands
BLM(Federal land areas administered by BLM)
| Country | State |
|---|---|
| United States | Alaska |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Secondary |
| Mercury | Tertiary |
| Antimony Critical | Tertiary |
| Tungsten Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Cinnabar | Ore |
| Gold | Ore |
| Scheelite | Ore |
| Stibnite | Ore |
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Plutonic Rock > Granitoid > Monzonite | ||
| |||
| Host or associated | Host |
|---|---|
| Rock type | Unconsolidated Deposit > Gravel |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Shale |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Argillite |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Sandstone |
| (1) | -158.00876, 62.40217 |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1910 |
| Year of last production | 1956 |
| District name | Iditarod |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | A015072 | |
| USGS | Alaska Resource Data File | ARDF | ID104 | |
| USGS | Mineral Resources Data System | MRDS | A015049 |
MERTIE, J.B., JR., AND HARRINGTON, G.L., 1916, MINERAL RESOURCES OF THE RUBY-KUSKOKWIM REGION, IN BROOKS, A.H., AND OTHERS, MINERAL RESOURCES OF ALASKA, REPORT ON PROGRESS OF INVESTIGATIONS IN 1915: U.S. GEOLOGICAL SURVEY BULLETIN 642, P. 223-266.
SMITH, P.S., 1917, THE LAKE CLARK-CENTRAL KUSKOKWIM REGION, ALASKA: U.S. GEOLOGICAL SURVEY BULLETIN 655 , 162 P., 1 SHEET, SCALE 1:250,000.
MERTIE, J.B., JR., 1936, MINERAL DEPOSITS OF THE RUBY-KUSKOKWIM REGION, ALASKA: U.S. GEOLOGICAL SURVEY BULLETIN 864-C, 115-245.
COBB, E.H., COMPILER, 1972, METALLIC MINERAL RESOURCES MAP OF THE IDITAROD QUADRANGLE, ALASKA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-363, SCALE 1:250,000.
COBB, E.H., 1976, SUMMARY OF REFERENCES TO MINERAL OCCURRENCES (OTHER THAN MINERAL FUELS AND CONSTRUCTION MATERIAL) IN THE IDITAROD AND OPHIR QUADRANGLES, ALASKA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 76-576, 101 P.
SWAINBANK, R.C., BUNDTZEN, T.K., CLOUGH, A.H., HENNING, M.W., HANSEN, E.W., 1995, ALASKA'S MINERAL INDUSTRY, 1994: ALASKA DIVISION OF GEOLOGICAL AND GEOPHYSICAL SURVEYS, SPECIAL REPORT 49, 77 P.
MILLER, M.L., BUNDTZEN, T.K., AND GRAY, J.E., 1996, MINERAL RESOURCE ASSESSMENT OF THE IDITAROD QUADRANGLE, WEST-CENTRAL ALASKA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-2219-B, SCALE 1:250,000, PAMPHLET (IN PRESS).
BAG-MF-363-30
| Subject category | Comment text |
|---|---|
| Deposit | DEEPLY WEATHERED MONZONITE STOCK AT HEAD OF FLAT CREEK CONSTITUTES A RESIDUAL PLACER, WHICH GRADES DOWNSTREAM INTO ALLUVIAL PLACERS AND THEN INTO BENCH AND STREAM PLACERS. BEST PAY IS 3-4 MI. ABOVE MOUTH. GOLD FROM BENCHES IS COARSER AND HIGHER GRADE THAN GOLD FROM CREEK GRAVEL. MERTIE (1936) REPORTED AVERAGE FINENESS OF 878 PARTS AU AND 114 PARTS AG. |
| Deposit | LOWER 4 MI. OF VALLEY HAS GRADIENT OF ABOUT 100 FT./MILE; UPPERMOST MILE OF VALLEY DROPS APPROXIMATELY 1000 FT. |
| Deposit | THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-1987 | Powers, M.T. (Huber, D.F.) | U.S. Geological Survey | ARDF AND MRDS MERGED RECORD |
| Updater | 01-MAY-1994 | Powers, M.T. (Huber, D.F.) | U.S. Geological Survey | |
| Editor | 06-MAR-1998 | Mason, George | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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