| Deposit ID | 10002219 |
|---|---|
| MRDS ID | A013120 |
| Record type | Site |
| Current site name | Mount Brock |
| Alternate or previous names | Mount Brack |
| Related records | 10282822 |
| Geographic coordinates: | -136.28211, 59.10973 (WGS84) |
|---|---|
| Relative position | This occurrence is in Glacier Bay National Park and Preserve about 0.8 miles northwest of the summit of Mount Brock; it is on a ridgetop at an elevation of approximately 3,900 feet. It corresponds to location 6 of Cobb (1972 [MF424]). A more detailed location is shown in Figure C-67 of Brew and others (1978). Note: Mount Brock is shown on some maps as Mount Brack. Schorr (1991) asserts that the correct name is Mount Brock, named for Canadian geologist R.W. Brock who visited Muir Inlet in 1913. |
Political divisions (FIPS codes)
Hoonah-Angoon(Census area)
Alaska(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Skagway A-4(quadrangle 1:63,360 scale)
Skagway SE(quadrangle 1:100,000 scale)
Skagway C(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Glacier Bay(hydrologic unit)
Northern Southeast Alaska(hydrologic accounting unit)
Southeast Alaska(hydrologic subregion)
Alaska(hydrologic region)
Federal lands
Glacier Bay National Park(National Park)
National Park NPS(Type of land area)
NPS(Federal land areas administered by NPS)
| Country | State |
|---|---|
| United States | Alaska |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Copper | Primary |
| Lead | Primary |
| Zinc Critical | Primary |
| Gold | Secondary |
| Antimony Critical | Secondary |
| Materials | Type of material |
|---|---|
| Arsenopyrite | Ore |
| Chalcopyrite | Ore |
| Galena | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Ankerite | Gangue |
| Calcite | Gangue |
| Quartz | Gangue |
| Model code | 85 |
|---|---|
| USGS model code | 22c |
| Deposit model name | Polymetallic veins |
| Mark3 model number | 46 |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Siltstone |
| (1) | -136.28211, 59.10973 |
|---|
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| District name | Juneau (Glacier Bay subdistrict) |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | A013120 | |
| USGS | Alaska Resource Data File | ARDF | SK014 |
MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1971, Mineral resources of Glacier Bay National Monument, Alaska: U.S. Geological Survey Professional Paper 632, 90 p., 12 plates, scale 1:250,000.
Cobb, E.H., 1972, Metallic mineral resources map of the Skagway quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-424, 1 sheet, scale 1:250,000.
Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p.
Cobb, E.H., 1981, Summaries of data and lists of references to metallic and selected nonmetallic mineral occurrences in the Skagway quadrangle, Alaska, Supplement to Open-File Report 78-316, Part A in Summaries of data to January 1, 1980: U.S. Geological Survey Open-File Report 81-82-A, 11 p.
Berg, H.C., 1984, Regional geologic summary, metallogenesis, and mineral resources of southeastern Alaska: U.S. Geological Survey Open-file Report 84-572, 298 p., 1 plate, scale approx. 1:600,000.
Schorr, A.E., 1991, Alaska Place Names, 4th edition: Anchorage, Alaska, The Denali Press, 191 p.
Still, J.C., 1991, Bureau of Mines mineral investigations in the Juneau mining district, Alaska, 1984 - 1988, v. 2, Detailed mine, prospect, and mineral occurrence descriptions, section B, Glacier Bay subarea: U.S. Bureau of Mines of Mines Special Publication, 69 p.
Cobb, E.H., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in the Skagway quadrangle, Alaska; Supplement to Open-File Report 78-316; Part A, Summaries of data to January 1, 1980: U.S. Geological Survey Open-File Report 81-82-A, 11 p.
| Subject category | Comment text |
|---|---|
| Deposit | Model Name = Polymetallic veins (Cox and Singer, 1986; model 22c). |
| Deposit | Other Comments = the deposit is within Glacier Bay National Park and Preserve where exploration and development is restricted. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 04-FEB-2001 | T.C. Crafford | T. Crafford & Associates |
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.