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

Unnamed

Occurrence in Alaska, United States with commodities Silver, Arsenic, Lead, Copper, Antimony, Tin, Zinc
Map
XML
JSON
KML
C
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. Mineral occurrence model information
  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 10308650
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -154.55297, 63.45949 (WGS84)
Relative position This occurrence is located on southern flanks of Mystery Mountains at approximately 1,500 feet (457 m) elevation in Section 35, T. 23 S., R. 22 E., of the Kateel River Meridian. Location is imprecise and judged to be within a two mile (3.2 km) radius.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Medfra B-4(quadrangle 1:63,360 scale)

Medfra S(quadrangle 1:100,000 scale)

Medfra C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Takotna River(hydrologic unit)

Upper Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Doyon, Limited(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Arsenic Critical Primary
Lead Primary
Copper Secondary
Antimony Critical Secondary
Tin Critical Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Tourmaline Gangue

Alteration

  • Tourmaline.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) -154.55297, 63.45949
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Occurrence consists of tourmaline-bearing altered dacite porphyry with iron oxide spots after pyrite. Anomalous silver, lead, and arsenic values occur in grab samples; elevated levels of antimony, copper, zinc, and tin also occur. Limited assay data is provided in King and others (1980) and Patton and Moll (1983).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name McGrath

Comments on the workings information

  • Workings / Exploration = Not indicated; see Patton and Moll (1983) and King and others (1980) for analytical data.

Reference information

Bibliographic references

  • Deposit

    Patton, W.W., Jr., and Moll, E.J., 1983, Mineral resource assessment map of the Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-811-G, 3 sheets, scale 1:250,000.

  • Deposit

    King, H.D., Risoli, D.A., Cooley, E.F., O'Leary, R.M., Speckman, W.A., Speisman, D.L., and Galland, D.W., 1980, Final results and statistical summary of analyses of geochemical samples from the Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-811F, 134 pages.

Comments on the references

  • Primary Reference = Patton and Moll, 1983

General comments

Subject category Comment text
Deposit Model Name = Polymetallic Vein (Cox and Singer, 1986; model no. 22c)
Deposit Other Comments = The unamed (MD081) occurrence is on land selected or conveyed to Doyon Ltd. For further information, contact Doyon Ltd. at 210 1st Ave., Fairbanks, Alaska, 99701.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-JUN-1998 Bundtzen, T.K. Pacific Rim Geological Consulting

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.