Last Chance Mine

The Last Chance Mine is a mica mine located in Latah county, Idaho at an elevation of 3,550 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Name: Last Chance Mine  

State:  Idaho

County:  Latah

Elevation: 3,550 Feet (1,082 Meters)

Primary Mineral: Mica

Lat, Long: 46.8786, -116.58080

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.


Satelite image of the Last Chance Mine

Last Chance Mine MRDS details

Site Name

Primary: Last Chance Mine
Secondary: Silver White
Secondary: Maybe, Witherow Lease


Commodity

Primary: Mica
Secondary: Beryllium
Secondary: Feldspar
Tertiary: Uranium


Location

State: Idaho
County: Latah
District: Avon Mica District


Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.


Holdings

Not available


Workings

Type: Surface/Underground


Ownership

Owner Name: Ida Mica And Others
Years: 1968 -

Owner Name: J. Witherow, B. Meier, C. Roseberry


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1888
Discovery Year: 1888
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Clearwater Mountains - Mica Mountain


Mineral Deposit Model

Not available


Orebody

Form: TABULAR, PIPELIKE, SEAMS


Structure

Type: R
Description: Steeply Dipping W Limb Of Anticline Of Great Width

Type: L
Description: Cleavage Planes Of Schists Strike N 55 Deg W. One Pegmatite Strikes N, Dips 77-83 Deg E, Parallel To Foliation


Alterations

Not available


Rocks

Name: Pegmatite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous


Analytical Data

Analytical Data: PEGMATITE COMPOSITION: 35% QUARTZ, 35% ALBITE, 12% TOURMALINE, 14% MUSCOVITE, SPARSE GARNET. A 91 LB COMPOSITE SAMPLE HAD 0.013% BEO.


Materials

Ore: Beryl
Gangue: Feldspar
Gangue: Garnet
Gangue: Tourmaline
Gangue: Vivianite
Gangue: Lithiophilite
Gangue: Quartz
Gangue: Graphite


Comments

Comment (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.

Comment (Workings): SEVERAL HUNDRED FT EXPLORATION TUNNELS

Comment (Geology): SCHISTOSITY OF ENCLOSING ROCKS STRIKES N 40 DEG W, DIPS 80 DEG E

Comment (Reserve-Resource): ADDITIONAL RESERVES MIGHT BE DEVELOPED BY OPENING CAVED WORKINGS

Comment (Location): ON W SLOPE MICA MOUNTAIN, 3/4 MI E OF THE LUELLA, 2200 FT NW OF STEELSMITH MINE AND ON SAME CLAIM AS WITHEROW LEASE 600 FT E

Comment (Production): ITEM 11 BERYL PRODUCTION INCLUDES 50 LBS FROM LAST CHANCE MINE AND 500 LBS. FROM THE WITHEROW MINE

Comment (Development): LAST CHANCE AND WITHEROW MINES ARE ON SAME CLAIM


References

Reference (Deposit): 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.

Reference (Deposit): 5) MINOBRAS (PUB.), 1975, IDAHO INDUSTRIAL MINERALS, P. 44.

Reference (Deposit): 6) PATTEE, E. C., AND OTHERS, 1968, BERYLLIUM RESOURCES OF IDAHO, WASHINGTON, MONTANA, AND OREGON: US BUR MINES REPT. INV. 7148, P. 40-42.

Reference (Deposit): 1925 RECON IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 14

Reference (Deposit): 1943 RECON W. C. STOLL, PROF. PAPER 229

Reference (Deposit): 1944 DIREXPL US BUR MINES, REPT. INV. 3898

Reference (Deposit): 1957 OTHER IDAHO BUREAU OF MINES AND GEOLOGY CO. REPT. 2

Reference (Deposit): 1958 RECON P. L. WEIS AND OTHERS, BULL. 1074-B

Reference (Deposit): 1958 RECON US BUR MINES, REPT. INV. 7148

Reference (Production): 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.

Reference (Deposit): ANDERSON, A. L., 1925, MICA DEPOSITS OF LATAH CO., IDAHO: IDAHO BUREAU OF MINES AND GEOL. PAMPHLET 14, 15 P.

Reference (Deposit): STOLL, W. C., 1950, MICA AND BERYL PEGMATITES IN IDAHO AND MONTANA: USGS PROF. PAPER 229, 64 P.

Reference (Deposit): HUBBARD, C. R., 1957, MINERAL RESOURCES OF LATAH COUNTY: IDAHO BUREAU OF MINES AND GEOLOGY COUNTY REPT. 2, 29 P.


Idaho Gold

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"Where to Find Gold in Idaho" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Idaho. Read more at Where to Find Gold in Idaho.