The Little Eldorado Cr. is a gold and silver mine located in Alaska.
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
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Little Eldorado Cr. MRDS details
Site Name
Primary: Little Eldorado Cr.
Secondary: Skookum Cr.
Secondary: Snow Gulch
Secondary: Coarse Money Cr.
Secondary: Bonanza Creek
Secondary: Bonanza Creek Area
Secondary: Includes Bonanza Cr.
Commodity
Primary: Gold
Primary: Silver
Tertiary: Molybdenum
Tertiary: Mercury
Tertiary: Lead
Tertiary: Copper
Location
State: Alaska
District: Chisana
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1913
Discovery Year: 1913
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Ore: Silver
Gangue: Cinnabar
Gangue: Molybdenite
Gangue: Galena
Comments
Comment (Reserve-Resource): SMALL,UNDISCOVERED PLACER DEPOSITS PROBABLY STILL EXIST IN BONANZA CREEK AREA, BUT THESE ARE OF LITTLE RESOURCE VALUE;THE TERTIARY GRAVELS COPPING GOLD HILL MAY BE OF FUTURE ECONOMIC IMPORT SINCE THEY ARE KNOWNTO BE AURIFEROUS, ALBEIT LOW GRADE, AND THEY HAVE AN ESTIMATED VOLUME OF 40 MILLION CUBIC METERS,USGS MF.655K, LOC.65
Comment (Location): BEST LOCATION: RICHTER AND JONES, 1973, I-749. AREA CONTAINS PRODUCTIVE PLACERS AT THE HEADWATERS OF BONANZA CR. DRAINING THE NORTHEAST SIDE OF GOLD HILL. ACCURATE WITHIN 1000 FT RADIUS.
Comment (Production): AU: EST. 50,000 OZ 1913-1959. PRODUCTION IN THE DISTRICT WAS DOMINATED BY BONANZA AND LITTLE ELDORADO CREEKS. PRODUCTION DATA ARE FOR ENTIRE CHISANA DISTRICT. MOST MINING WAS BETWEEN 1913 AND 1915, WHEN ABOUT HALF OF THE DISTRICT'S TOTAL PRODUCTION TOOK PLACE; PRODUCTION SINCE 1940 HAS BEEN MINOR.
Comment (Workings): ATTEMPT WAS MADE AT DRIFT MINING ON UPPER BONANZA CREEK. REPORT OF 85 FT SHAFT WITH 25 FT DRIFT DUG INTO OLD CHANNEL WITHOUT DISCOVERING PAYING GROUND. MANY OF THE GRAVELS WERE FROZEN LOCALLY. CURRENT CONDITION UNKNOWN. FINENESS VALUES BETWEEN 791 AND 818, (REPORTED IN MOFFIT (1954, P. 200) AS ASSAY VALUE OF 16.35 TO 16.90 DOLLARS/OZ, WITH AU AT 20.67 DOLLARS/OZ). TYPE OF WORKINGS: CHIEFLY SURFACE. INTERMITTENT MINING SINCE DISCOVERY IN 1913.
Comment (Deposit): SMALL-SCALE PLACER MINING AND PROSPECTING HAS ALSO TAKEN PLACE ON CHATHENDA CREEK AND ITS TRIBUTARIES, INCLUDING AN ATTEMPT AT DRIFT MINING ON DRY GULCH (NOW CALLED SALT CREEK). PRODUCTION, IF ANY, WAS PROBABLY NOT SIGNIFICANT
Comment (Deposit): HOST MATERIAL IS AURIFEROUS GRAVEL. STREAM, BENCH, AND OLD CHANNEL GRAVELS RANGE FROM 2 TO 12 FT IN DEPTH, AVE. 4 TO 5.5 FT. GOLD IN STREAM PLACERS WAS ON AND IN TOP 1 TO 2.5 FT OF RIPPABLE BEDROCK. GRAVELS ARE THIN, HETEROGENEOUS, AND ANGULAR WITH LOCALLY ABUNDANT BOULDERS.
Comment (Exploration): Status = Active
References
Reference (Deposit): USGS OFR 397
Reference (Deposit): RICHTER, D.H., AND MATSON, N.A., 1972, METALLIC MINERAL RESOURCES MAP OF THE NABESNA QUADRANGLE, ALASKA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-422, SCALE 1:250,000.
Reference (Deposit): BROOKS, 1915, USGS B 622, P. 202-204, 208-216, 222
Reference (Deposit): RICHTER, D.H., AND MATSON, N.A., 1970, GEOCHEMICAL DATA FROM THE NABESNA A-2 QUADRANGLE, ALASKA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 70-275, 12 P., 1 SHEET, SCALE 1:63,360.
Reference (Deposit): CAPPS, S.R., 1916, THE CHISANA-WHITE RIVER DISTRICT, ALASKA: U.S. GEOLOGICAL SURVEY BULLETIN 630, 130 P.
Reference (Deposit): BROOKS, 1921, USGS B 714, P.84
Reference (Deposit): MOFFIT, F.H., 1943, GEOLOGY OF THE NUTZOTIN MOUNTAINS, ALASKA, WITH A SECTION ON THE IGNEOUS ROCKS, BY R. C. WAYLAND, AND GOLD DEPOSITS NEAR NABESNA, BY R. C. WAYLAND, 1943: U.S. GEOLOGICAL SURVEY BULLETIN 933-B, P. 103-199.
Reference (Deposit): RICHTER, D.H., AND OTHERS, 1975, MINERAL RESOURCES MAP OF THE NABESNA QUADRANGLE, ALASKA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-655-K, SCALE 1:250,000.
Reference (Deposit): RICHTER, D.H., AND JONES, D.L., 1973, RECONNAISSANCE GEOLOGIC MAP OF THE NABESNA A-2 QUADRANGLE, ALASKA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS INVESTIGATIONS SERIES MAP I-749, SCALE 1:63,360.
Reference (Deposit): USGS PP 610, P. 25.
Reference (Other Database): BAG-MF-655K-65
Reference (Production): USGS BULL 714,P84;USGS PP610,P.25
Reference (Deposit): MOFFIT, F.H., 1954, GEOLOGY OF THE EASTERN PART OF THE ALASKA RANGE AND ADJACENT AREA: U.S. GEOLOGICAL SURVEY BULLETIN 989-D, P. 65-218.
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