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  3. Mineral Resource Data System (MRDS)

Smucker

Prospect in Alaska, United States with commodities Silver, Copper, Lead, Zinc, Gold
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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. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10001180
MRDS ID A011883
Record type Site
Current site name Smucker
Alternate or previous names Charlie, Patti, Puzzle, Ambler 4-B

Geographic coordinates

Geographic coordinates: -157.17043, 67.29148 (WGS84)
Relative position Located on ridge east of VABM Sleet in T. 22 N., R. 8 E., Kateel River Meridian. Accurately located to within 300 ft. (100 m) and shown as locality 36 in Mayfield and Grybeck (1978).???

Site location context

Political divisions (FIPS codes)

Northwest Arctic(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ambler River B-3(quadrangle 1:63,360 scale)

Ambler River SE(quadrangle 1:100,000 scale)

Ambler River C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Kobuk River(hydrologic unit)

Kobuk-Selawik Rivers(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Copper Primary
Lead Primary
Zinc Critical Primary
Gold Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Owyheeite Ore
Sphalerite Ore
Calcite Gangue
Chlorite Gangue
Muscovite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) No hydrothermal alteration of wall rock evident.

Mineral occurrence model information

Model code 184
USGS model code 28a
Deposit model name Massive sulfide, kuroko
Mark3 model number 93

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble
    Rock unit name Ambler Group;Ambler Group;Ambler Group
    Rock description Ambler Group;Ambler Group;Ambler Group
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Ambler Group;Ambler Group
    Rock description Ambler Group;Ambler Group

Nearby scientific data

(1) -157.17043, 67.29148
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Layered sulfide zone 9 ft to 27 ft. (3 m to 9 m) thick, continous for at least 6000 ft (2000 m) along strike, consists of banded, fine to medium grained pyrite, sphalerite, galena, chalcopyrite and minor owyheeite in a silica-calcite-pyrite matrix. The country rocks are characteristic of the Devonian-Mississippian Ambler sequence and consist dominantly of well-foliated porphyroblastic quartz-feldspar-muscovite-chlorite schist interlayered with quartz-muscovite-chlorite phyllite, graphitic phyllite, calcite-mica schist and marble. Mineralized zone is repeated by complex folding (Nana Development Corp., written commun., 1997)
  • Age = Devonian

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Active

Mining district

District name Kiana

Comments on the reserve resource information

  • Reserves = Hitzman and others (1986) report greater than eight million metric tons grading 0.8% Cu, 6.8% Zn, 2.3% Pb, 200 g/ton Ag. Bundzten (1995) reported "significant" tonnage grading 1.5% Pb, 5%-10% Zn, 103-343 g/ton Ag, and minor Au.

Comments on the workings information

  • Workings / Exploration = Surface geologic mapping, geochemical sampling (soil grids), electromagnetic measurements, magnetometer measurements, and eight drill holes by 1984 (Nana Development Corp., written commun., 1997). According to Mayfield and Grybeck (1978) two drill samples 2400 ft (820 m) apart intersected layered sulfide zones 9 ft. to 27 ft. (3 m to 9 m) thick assaying 100 g/ton Ag, 2-8% Zn and 1-1.6% Pb. Grades from drill samples indicated 3.8% Zn, 1.2 to 1.6% Pb, 69-514 g/ton Ag. ???

Reference information

Comments on the references

  • Primary Reference = Hitzman and others, 1986

General comments

Subject category Comment text
Deposit Model Name = Kuroko
Deposit Other Comments = Excellent example of stratiform volcanogenic sulfide deposit typical of the Ambler sequence in the southern Brooks Range. This is the westernmost known occurrence of this type deposit in the southern Brooks Range. All available data suggest Smucker to be relatively significant in size (Hitzman and others, 1986)

Reporter information

Type Date Name Affiliation Comment
Reporter 04-MAY-1997 K.R. Leonard U.S. Geological Survey
Reporter 04-MAY-1997 R.L. Elliott U.S. Geological Survey
Reporter 04-MAY-1997 J.M. Schmidt U.S. Geological Survey
Reporter 04-MAY-1997 S.W. Nelson U.S. Geological Survey

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.