1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Mikado Mine

Producer in Alaska, United States with commodities Gold, Silver, Zinc, Lead, Antimony
Map
XML
JSON
KML
B
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10107527
MRDS ID A012558
Record type Site
Current site name Mikado Mine
Alternate or previous names Carter, Crystal, Eclipse, Engineers Exploration Syndicate, Golden Eagle, Idaho-Alaska Corp., Little Mikado, Overlook, Tobin
Related records 10135873

Geographic coordinates

Geographic coordinates: -148.25329, 67.53973 (WGS84)
Relative position HEAD OF ST. MARY'S GULCH

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chandalar C-3(quadrangle 1:63,360 scale)

Chandalar N(quadrangle 1:100,000 scale)

Chandalar C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • ADGGS GR 42, FIGURE 2; LOCATION IS GIVEN FOR MIKADO LODE; NUMEROUS CLAIMS AND QUARTZ VEINS IN IMMEDIATE VICINITY; MOST OR POSSIBLY ALL MINING ON THE MIKADO VEIN LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Zinc Critical Tertiary
Lead Tertiary
Antimony Critical Tertiary

Comments on the commodity information

  • GEOCHEMICAL SAMPLES SHOW HIGH CONCENTRATIONS OF AG, AS, PB, SB AND ESPECIALLY ZN; CU CONTENT GENERALLY LOW

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore
Stibnite Ore
Limonite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidized To 75 Ft; Principal Oxidation Products: Scorodite And Limonite

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Mikado Phyllite;Mikado Phyllite
    Rock description Mikado Phyllite;Mikado Phyllite

Nearby scientific data

(1) -148.25329, 67.53973
ListMap

Economic information

Comments on the geologic information

  • GENERAL AREA IS UNDERLAIN BY DEVONIAN SCHIST AND PHYLLITE CUT BY GREENSTONE SILLS AND DIKES; THE AREA E OF CHANDALAR LAKE IS CUT BY A SERIES OF NW TRENDING FAULTS; THE CHANDALAR AREA IS PART OF A LARGE REGION THAT IS DOMINATED BY NE TRENDING FOLDS AND THRUST PLATES, LOCALLY INTRUDED BY NE TRENDING BODIES OF GRANITIC ROCK AND BORDERED ON THE S BY E-W TRENDING FOLDS AND A GRANITIC BATHOLITH ELONGATED E-W. MIKADO PHYLLITE, SUBUNIT OF DEV. SCHIST; PROMINENT INTERBED OF PHYLLITE IN QUARTZ-MUSCOVITE SCHIST

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1909
Year of last production 1982

Mining district

District name Chandalar

Comments on the production information

  • REPORT ON 1983 MINING ACTIVITY IN ALASKA STATES: AN ESTIMATED 10,000 OZ AU PRODUCED "DURING THE LAST SEVERAL YEARS"; ADGGS SR 33, P. 16

Comments on the reserve resource information

  • PROVEN RESERVES IN 1979: MORE THAN 30,000 TONS GRADING 1 OZ/TON AU, ADGGS REVIEW OF ALASKA'S MINERAL RESOURCES, 1981-82, P. 20.

Comments on the workings information

  • 60 M SHAFT, 140 M CROSSCUT AND OPEN CUTS, 1909-1913; WORKINGS CAVED BY 1923; MORE THAN 200 M ADDED UNDERGROUND AND SOME SURFACE TRENCHING IN 1959-1960; 260 M OF DRIFTING AND CROSSCUTTING DONE WITH OME ASSISTANCE IN 1962-63; UNKNOWN AMOUNT OF WORK DONE IN LATE 60'S, LATE 70'S AND EARLY 80'S; MILL REDESIGATED, 1981; 125 TPD

Comments on development

  • FIRST UNDERGROUND DEVELOPMENT, 1909-1913; MINE REOPENED BY LITTLE SQUAW MINING CO. IN 1959-1960; UNDERGROUND WORK IN 1962-1963 DONE WITH OFFICE OF MINERALS EXPLORATION (OME) ASSISTANCE; UP TO 100 TPD MILLED INTERMITTENTLY IN THE LATE 60'S TO THE EARLY 80'S; MILL REDESIGNED IN 1981 TO INCLUDE CYANIDE-LEACHING AND FLOTATION CIRCUIT, MILL CAPACITY INCREASED TO 125 TPD; MILL OPERATED FOR 38 DAYS IN 1982; WORK IN 1983 RESTRICTED TO UNDERGROUND DEVELOPMENT DRILLING AND DRIFTING; NO WORK IN 1984

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit NW TRENDING SHEAR ZONE ABOUT 50 FT WIDE CONTAINS SUBPARALLEL, HIGHLY FAULTED AND BRECCIATED AURIFEROUS QUARTZ VEINS UP TO 2 M THICK EXPOSED FOR OVER 900 M ALONG MIKADO FAULT; MIKADO VEIN AVERAGES 6 FT IN THICKNESS OVER 500 FT STRIKE LENGTH; MOST VEINS DISCONTINUOUS, A FEW TENS 'OR HUNDREDS OF FT LONG; VEINS CARRY VISIBLE FREE GOLD AND LESS THAN 5% SULFIDES; SULFIDES PRESENT: PYRITE, ARSENOPYRITE, SPHALERITE, GALENA AND STIBNITE
Deposit SEE ALSO: LITTLE SQUAW, TOBIN CREEK ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-86 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 02-SEP-94 Mosier, Dan U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.