| Deposit ID | 10000284 |
|---|---|
| MRDS ID | A010332 |
| Record type | Site |
| Current site name | Unnamed Near Salmon Bay |
| Geographic coordinates: | -133.17075, 56.31945 (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
Petersburg B-4(quadrangle 1:63,360 scale)
Petersburg S(quadrangle 1:100,000 scale)
Petersburg(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Prince of Wales(hydrologic unit)
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 |
|---|---|
| Uranium | Primary |
| Thorium | Primary |
| REE Critical | Secondary |
| Copper | Tertiary |
| Materials | Type of material |
|---|---|
| Bastnaesite | Ore |
| Chalcopyrite | Ore |
| Monazite | Ore |
| Parisite | Ore |
| Thorite | Ore |
| Hematite | Gangue |
| Pyrite | Gangue |
| Result | AVERAGE EQUIVALENT URANIUM VALUE IS 0.03%, BUT CHEMICAL ANALYSIS HIGH IS 0.003%. BALANCE OF RADIACTIVITY DUE TO TH. SMALLER VEINS A FEW HUNDRED FEET SW HAVE UP TO 0.72% RAE |
|---|
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Plutonic Rock > Porphyry > Lamprophyre | ||
| |||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Siltstone |
| (1) | -133.17075, 56.31945 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Deposit Is On West Flank Of N-Nw Trending Kashevarof Anticline. Regional Strike And Dip: N15w, 45sw |
| General form | SEE DEPOSIT DESCRIPTION COMMENTS |
|---|---|
| Strike | N3W |
| Dip | 70E |
| Thickness | 0.91M |
| Length | 45.72M |
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1950 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | A010332 | |
| USGS | Alaska Resource Data File | ARDF | PEO56 | |
| USGS | Mineral Resources Data System | MRDS | A010322 |
Houston, J. R., Bates, R. G., Velikanje, R. S., and Wedow, Helmuth, Jr., 1958, Reconnaissance for radioactive deposits in southeastern Alaska, 1952: U. S. Geological Survey Bulletin 1058-A, p. 1-31.
Overstreet, W.C., 1967, The geologic occurrence of monzonite: U.S. Geological Survey Professional Paper 530, 327 p.
Cobb, E. H., 1972, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Petersburg Quadrangle, Alaska: U.S. Geological Survey Open File Report 78-870, 53 p.
Cobb, E. H., 1972, Metallic mineral resources map of the Petersburg quadrangle, Alaska: U. S. Geological Survey Miscellaneous Field Studies Map MF-415, 1 sheet, scale 1:250,000.
U.S. Bureau of Mines, 1980, Claim map, Petersburg quadrangle, Alaska: U.S. Bureau of Mines Map No. 117, 1 sheet, scale 1:250,000.
Grybeck, D. J., Berg, H. C., and Karl, S. M., 1984, Map and description of the mineral deposits in the Petersburg and eastern Port Alexander quadrangles: U.S. Geological Survey Open-File Report 84-837, 86 p., 1 sheet, scale 1:250,000.
Warner, J. D., 1989, Columbium-, rare-earth element-, and thorium- bearing veins near Salmon Bay, southeastern Alaska: U.S. Bureau of Mines Open-File Report 6-89, 25 p.
Brew, D.A., 1997, Reconnaissance geologic map of the Petersburg B-4 quadrangle, southeastern Alaska: U. S. Geological Survey Open-File Report 97-156-F, scale 63,360, one sheet, 23 p. pamphlet.
Karl, S. M., Berg, H. C., Grybeck, D., and Abramson, B. S., 1980, Tables describing metalliferous and selected nonmetallic mineral deposits in the Petersburg and eastern Port Alexander quadrangles, Alaska: U. S. Geological Survey Open-File Report 80-793, 14 p., 4 sheets, scale, 1:250,000
| Subject category | Comment text |
|---|---|
| Deposit | STEEPLY-DIPPING, LOCALLY HIGHLY RADIOACTIVE, CARBONATE VEINS OCCUR AT THREE LOCALITIES IN HEMATITICALLY ALTERED, HORNFELSED SILURIAN GRAYWACKE. THE GRAYWACKE IS CUT BY DEFORMED AND SHEARED FELSIC DIKES AND UNDEFORMED BASALT DIKES (BREW, 1997 [OF 97-156-F]). THE VEINS CONTAIN FLUORITE, MONAZITE, AND A VARIETY OF RARE-EARTH FLUOCARBONATE MINERALS, SOME OF WHICH ARE HIGHLY RADIOACTIVE (HOUSTON AND OTHERS, 1953; EAKINS, 1975, AND GRYBECK, BERG, AND KARL, 1984). THE VEINS ARE UP TO FOUR FEET THICK BUT MOST ARE THINNER AND CAN BE ONLY TRACED FOR A FEW HUNDRED FEET WHERE THEY DISAPPEAR UNDER VEGETATION OR UNDER WATER. THE ORE MINERALOGY OF THE VEINS VARIES GREATLY AND INCLUDES RED HEMATITE, SPECULAR HEMATITE, MAGNETITE, PYRITE, MARCASITE, CHALCOPYRITE, THORITE, MONAZITE, ZIRCON, PARISITE, AND BASTNAESITE. GANGUE MINERALS ARE MAINLY DOLOMITE-ANKERITE, WITH VARYING AMOUNTS OF ALKALI FELDSPAR, CHERT, QUARTZ, CHALCEDONY, CHLORITE, EPIDOTE, SERICITE, KAOLINITE, FLUORITE, MUSCOVITE, |
| Deposit | APATITE, TOPAZ, AND GARNET. THE MAXIMUM RADIOACTIVITY OF THE VEINS AS MEASURED BY THE USGS IS 0.095 EU; THE AVERAGE IS 0.03 EU AND THE HIGHEST URANIUM CONTENT IS 0.3% (HOUSTON AND OTHERS, 1958). THE RARE-EARTH CARBONATE VEINS CONTAIN AN AVERAGE OF 0.79% COMBINED RARE-EARTH OXIDES; ONE HIGH-GRADE GRAB SAMPLE CONTAINED ABOUT 5% RARE-EARTH OXIDES. ONLY TRACE OF THE RARE EARTHS ARE PRESENT IN THE RADIOACTIVE VEINS. GRAB SAMPLES OF VEINS AND FELSIC DIKES TAKEN DURING USGS WORK IN THE EARLY 1980'S COMMONLY CONTAIN MORE THAN 1000 PPM LA, AND SEVERAL CONTAIN 1000 PPM MO (GRYBECK, BERG, AND KARL, 1984). WARNER (1989) SAMPLED SEVERAL VEINS AT THIS SITE TO ASSESS THEIR COLUMBIUM POTENTIAL. A VEIN JUST SOUTH OF BAY POINT CONTAINS 0.2% REE ACROSS A WIDTH OF 8.0 FEET AND A LENGTH OF 1,300 FEET. A VEIN AT BAY POINT CONTAINS 850 PPM CB ACROSS A WIDTH OF 3.4 FEET AND A LENGTH OF 1,200 FEET. ALSO SEE PE055 FOR A DESCRIPTION OF VERY SIMILAR IF NOT IDENTICAL VEINS TO THE SOUTH ON |
| Deposit | PITCHER ISLAND. |
| Deposit | SEE ALSO SALMON BAY OCCURRENCE ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; USGS OPEN FILE 80-793, TABLE 2 |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-NOV-1983 | Hirschmann, M. M. (Elliott, R. L.) | U.S. Geological Survey | |
| Updater | 01-NOV-1998 | Berg, H. C. (Grybeck, D. J.) | 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.