| Deposit ID | 10094006 |
|---|---|
| MRDS ID | A011846 |
| Record type | Site |
| Current site name | J.D. Lyons |
| Geographic coordinates: | -144.04957, 62.78079 (WGS84) |
|---|---|
| Relative position | The J.D. Lyons prospect (Cobb, 1979 [OF 79-1247,p. 18]) is at an elevation of about 4,400 feet on the ridge about 1/4 mile south of the confluence of the two headwater forks of Grubstake Creek . It is in the center of the N1/2, section 35, T. 12 N., R. 7 E., Copper River Meridian. Another geologically similar prospect is at an elevation of about 3,700 feet to the north, but south of Grubstake Creek. The location of these prospects is accurate; they are shown as locality 5 of Richter (1966, figure 5, p. 31), locality 16 of Richter and Matson (1972), and locality 15 of MacKevett and Holloway (1977). |
Political divisions (FIPS codes)
Valdez-Cordova(Census area)
Alaska(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Gulkana D-1(quadrangle 1:63,360 scale)
Gulkana NE(quadrangle 1:100,000 scale)
Gulkana(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Copper River(hydrologic unit)
Copper River(hydrologic accounting unit)
South Central Alaska(hydrologic subregion)
Alaska(hydrologic region)
Federal lands
Ahtna, Incorporated(ANCSA Region)
ANCSA Region NTVPIC(Type of land area)
NTVPIC(Federal land areas administered by NTVPIC)
| Country | State |
|---|---|
| United States | Alaska |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Malachite | Ore |
| Pyrite | Ore |
| Quartz | Gangue |
| Model code | 85 |
|---|---|
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite | ||
| |||
| (1) | -144.04957, 62.78079 |
|---|
| Development status | Prospect |
|---|---|
| Commodity type | Metallic |
| District name | Chistochina |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | A011846 | |
| USGS | Alaska Resource Data File | ARDF | GU018 |
Richter, D.H., 1966, Geology of the Slana district on south-central Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 2l, 36b p., 3 sheets, scale 1:63,360.
Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Gulkana quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1247, 36 p.
Richter, D.H., and Matson, N.A., Jr., 1972, Metallic mineral resources map of the Gulkana quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-419, 1 sheet, scale 1:250,000.
MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.
| Subject category | Comment text |
|---|---|
| Deposit | Model Name = Polymetallic vein (Cox and Singer, 1986; model 22c) |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 20-DEC-00 | W.T. Ellis | Alaska Earth Sciences | |
| Reporter | 20-DEC-00 | Hawley, C.C. | Hawley Resource Group | |
| Reporter | 20-DEC-00 | W.J. Nokleberg | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.