| Deposit ID | 10003622 |
|---|---|
| MRDS ID | A106380 |
| Record type | Site |
| Current site name | Ronan Copper |
| Geographic coordinates: | -130.05064, 56.0006 (WGS84) |
|---|---|
| Relative position | SEE LOCATION COMMENTS |
Political divisions (FIPS codes)
Prince of Wales-Hyder(Census area)
Alaska(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Bradfield Canal A-1(quadrangle 1:63,360 scale)
Bradfield Canal SE(quadrangle 1:100,000 scale)
Bradfield Canal(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Southern Southeast Alaska(hydrologic accounting unit)
Southeast Alaska(hydrologic subregion)
Alaska(hydrologic region)
Federal lands
Tongass National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State |
|---|---|
| United States | Alaska |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Gold | Primary |
| Copper | Primary |
| Model code | 85 |
|---|---|
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| (1) | -130.05064, 56.0006 |
|---|
| General form | SEE DEPOSIT DESCRIPTION COMMENTS |
|---|
| Commodity type | Metallic |
|---|---|
| Significant | No |
| District name | Hyder |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | A106380 | |
| USGS | Alaska Resource Data File | ARDF | BC089 |
Smith, J.G., 1977, Geology of the Ketchikan D1 and Bradfield Canal A-1 quadrangles, southeastern Alaska: U.S. Geological Survey Bulletin 1425, 49 p.
Alldrick, D. J., 1993, Geology and metallogeny of the Stewart mining camp, northwestern British Columbia: British Columbia Department of Mines and Petroleum Resources Bulletin no. 85, 105 p., 2 plates."
Maas, K. M., Bittenbender, P. E., and Still, J. C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U. S. Bureau of Mines Open-File Report 11-95, 606 p.
Koch, R. D., 1996, Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728A, 35 p.,1 sheet, scale 1:250,000.
| Subject category | Comment text |
|---|---|
| Deposit | THE COUNTRY ROCKS IN THE AREA OF THE RONAN COPPER PROSPECT ARE PELITIC METASEDIMENTARY AND SUBORDINATE ANDESITIC METAVOLCANIC STRATA OF THE JURASSIC OR OLDER MESOZOIC HAZELTON GROUP; THE TRIASSIC TEXAS CREEK GRANODIORITE, WHICH UNDERLIES AND LOCALLY INTRUDES THE HAZELTON; THE EOCENE HYDER QUARTZ MONZONITE, WHICH INTRUDES THE HAZELTON AND TEXAS CREEK ROCKS; AND STILL-YOUNGER TERTIARY LAMPROPHYRE DIKES, WHICH CUT ALL THE OTHER ROCKS (SMITH, 1973, 1977; KOCH, 1996). MAAS AND OTHERS (1995, P. 252, 260) DESCRIBE THE DEPOSIT AS ONE OF GROUP OF GOLD-BEARING PYRRHOTITE DEPOSITS COMPRISING DISSEMINATIONS AND MASSES OF SULFIDE MINERALS, ACCOMPANIED BY QUARTZ, IN SHEAR ZONES IN HAZELTON VOLCANIC ROCKS. THE SULFIDE MINERALS IN THIS GROUP OF DEPOSITS INCLUDE AURIFEROUS PYRRHOTITE, WITH ASSOCIATED CHALCOPYRITE AND ARSENOPYRITE, AND LOCAL SPHALERITE AND GALENA. MAAS AND OTHERS (1995, P. 252) SUGGEST THAT THE RONAN COPPER DEPOSIT IS JURASSIC IN AGE, BASED ON SIMILARITIES IN MINERALOGY, |
| Deposit | STRUCTURAL SETTING, AND HOSTROCK, TO ISOTOPICALLY-DATED JURASSIC DEPOSITS NEARBY IN THE HYDER DISTRICT (SEE, FOR EXAMPLE, BC065, 067). IF SO, THE DEPOSIT IS CONTEMPORANEOUS, AT LEAST IN PART, WITH ISLAND-ARC VOLCANISM IN HAZELTON TIME (ALLDRICK, 1993). |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1998 | Berg, H. C. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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