| Deposit ID | 10072067 |
|---|---|
| MRDS ID | W015894 |
| Record type | Site |
| Current site name | Last Chance Mine |
| Alternate or previous names | Silver White, Maybe, Witherow Lease |
| Related records | 10216748, 10144703 |
| Geographic coordinates: | -116.58183, 46.87846 (WGS84) |
|---|---|
| Elevation | 1082 |
| Relative position | ABOUT 6.5 MI N OF DEARY |
Political divisions (FIPS codes)
Latah(county)
Idaho(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Sand Mountain(quadrangle 1:24,000 scale)
Potlatch(quadrangle 1:100,000 scale)
Pullman(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Clearwater(hydrologic unit)
Clearwater(hydrologic accounting unit)
Lower Snake(hydrologic subregion)
Pacific Northwest(hydrologic region)
Federal lands
ST(Federal land areas administered by ST)
| Country | State | County |
|---|---|---|
| United States | Idaho | Latah |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Boise | 041N | 002W | 22 | Idaho |
| Commodity | Importance |
|---|---|
| Mica | Primary |
| Feldspar | Secondary |
| Beryllium Critical | Secondary |
| Uranium | Tertiary |
| Materials | Type of material |
|---|---|
| Beryl | Ore |
| Feldspar | Gangue |
| Garnet | Gangue |
| Graphite | Gangue |
| Lithiophilite | Gangue |
| Quartz | Gangue |
| Tourmaline | Gangue |
| Vivianite | Gangue |
| Result | PEGMATITE COMPOSITION: 35% QUARTZ, 35% ALBITE, 12% TOURMALINE, 14% MUSCOVITE, SPARSE GARNET. A 91 LB COMPOSITE SAMPLE HAD 0.013% BEO. |
|---|
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Pegmatite | ||||||||
| Rock unit name | Pegmatite | ||||||||
| Rock description | Pegmatite | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist |
| Rock unit name | Prichard-Burke Form.-Muscovite-Biotite Schists |
| Rock description | Prichard-Burke Form.-Muscovite-Biotite Schists |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Pegmatite |
| (1) | -116.58183, 46.87846 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Steeply Dipping W Limb Of Anticline Of Great Width |
| Type of structure | Local |
| Structure description | Cleavage Planes Of Schists Strike N 55 Deg W. One Pegmatite Strikes N, Dips 77-83 Deg E, Parallel To Foliation |
| General form | TABULAR, PIPELIKE, SEAMS |
|---|---|
| Strike | N 70 DEG W |
| Dip | 50 DEG E |
| Plunge | 35 DEG |
| Plunge direction | N 36 DEG E |
| Thickness | 7.92M |
| Length | 91.44M |
| Width | 9.14M |
| Development status | Past Producer |
|---|---|
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1888 |
| Year of first production | 1888 |
| District name | Avon Mica District |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | J. Witherow, B. Meier, C. Roseberry |
| Type | Owner |
|---|---|
| Owner | Ida Mica And Others |
| First year | 1968 |
| Type of workings | Surface/Underground |
|---|---|
| Length | 45.72M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W015894 | |
| Idaho Geological Survey | Idaho Mines and Prospects | IMP | PL__50 | http://www.idahogeology.org/ |
ANDERSON, A. L., 1925, MICA DEPOSITS OF LATAH CO., IDAHO: IDAHO BUREAU OF MINES AND GEOL. PAMPHLET 14, 15 P.
STOLL, W. C., 1950, MICA AND BERYL PEGMATITES IN IDAHO AND MONTANA: USGS PROF. PAPER 229, 64 P.
HUBBARD, C. R., 1957, MINERAL RESOURCES OF LATAH COUNTY: IDAHO BUREAU OF MINES AND GEOLOGY COUNTY REPT. 2, 29 P.
WEIS, P. L., ARMSTRONG, F. C., AND ROSENBLUM, S., 1958, RECONNAISSANCE FOR RADIOACTIVE MINERALS IN WASHINGTON, IDAHO, AND WESTERN MONTANA, 1952-1955: USGS BULL. 1074-B, 48 P.
5) MINOBRAS (PUB.), 1975, IDAHO INDUSTRIAL MINERALS, P. 44.
6) PATTEE, E. C., AND OTHERS, 1968, BERYLLIUM RESOURCES OF IDAHO, WASHINGTON, MONTANA, AND OREGON: US BUR MINES REPT. INV. 7148, P. 40-42.
1925 RECON IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 14
1943 RECON W. C. STOLL, PROF. PAPER 229
1944 DIREXPL US BUR MINES, REPT. INV. 3898
1957 OTHER IDAHO BUREAU OF MINES AND GEOLOGY CO. REPT. 2
1958 RECON P. L. WEIS AND OTHERS, BULL. 1074-B
1958 RECON US BUR MINES, REPT. INV. 7148
STOLL, W. C., 1950, USGS PROF. PAPER 229, 64 P. { LESURE, F. G., 1964, IDAHO BUREAU OF MINES AND GEOLOGY SPEC. PAPER 1, P. 131. { PATTEE, E. C., AND OTHERS, 1968, US BUR MINES, P. 25.
| Subject category | Comment text |
|---|---|
| Deposit | OTHER READINGS ON STRIKE RANGE N 6-70 DEG E, ON DIP RANGE 30-90 DEG SE. 5 PEGMATITES. PEGMATITE IN CUT NO. 3 PLUNGES ABOUT 55 DEG, N 65 DEG E. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1975 | Miller, Pat J. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.