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

Breen East (Hobson)

Prospect in Alaska, United States with commodities Gold, Antimony
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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10307940
Record type Site
Current site name Breen East (Hobson)

Geographic coordinates

Geographic coordinates: -165.29919, 64.76509 (WGS84)
Relative position The Breen East prospect includes two patented claims, Hobson Gold Lode and the adjacent Great American Lode. These are in the south-central part of section 26, T. 8 S., R. 33 W., Kateel River Meridian. The claims are on the top of the ridge that separates Hobson Creek from upper Manila Creek. Discovery trenches in the northeast part of the Hobson Gold Lode are about at an elevation of 1,600 feet. The location given is near the center end line that separates the two claims; it is within about 500 feet of the coordinates. The location of the discovery cuts on the Hobson Gold Lode claim is about at the site of locality 27 of Hummel (1962, MF-248), who, followed by Cobb (1972 [MF 463], 1978 [OFR 78-93]), appears to have mislocated the Breen East prospect.

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nome D-1(quadrangle 1:63,360 scale)

Solomon NW(quadrangle 1:100,000 scale)

Nome(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Nome(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Antimony Critical Secondary

Materials information

Materials Type of material
Arsenopyrite Ore
Gold Ore
Pyrite Ore
Pyrrhotite Ore
Stibnite Ore
Quartz Gangue

Nearby scientific data

(1) -165.29919, 64.76509
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Breen East prospect includes two claims patented in 1924, the Hobson Gold Lode and the adjacent Great American Lode. Hummel reported this to be an iron sulfide occurrence that may include arsenopyrite, pyrite, and, in some cases, pyrrhotite. The claims are immediately to the east of the northeastmost Sliscovich group of patented claims (NM086). The Breen East claims lie along a steep northeast-trending fault mapped by Hummel (1962, location 27 [MF 248]). Bundtzen and others (1994) show the same northeast-trending fault as a lineament that passes northerly into a fault. The country rock is interlayered calcareous schist, quartz-muscovite schist, and lesser amounts of marble, schistose marble and black quartz schist. Part of the area is underlain by a metagranodiorite (Hummel, 1962 [MF 248]) that approximately corresponds to a muscovite-bearing felsic metavolcanic schist mapped by Bundtzen and others (1994).

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Active?

Mining district

District name Nome

Comments on the workings information

  • Workings / Exploration = Workings at the time of the patent application included six shafts, six surface cuts, and two discovery locations. The two claims were patented in 1924; there has been no recent exploration.

Reference information

Bibliographic references

  • Deposit

    Hummel, C.L., 1962, Preliminary geologic map of the Nome D-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-248, 1 sheet, scale 1:63,360.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p.

Comments on the references

  • Primary Reference = Hummel, 1962 (MF 248)

General comments

Subject category Comment text
Deposit Model Name = Sulfide-bearing quartz veins (?) in metasedimentary rocks.

Reporter information

Type Date Name Affiliation Comment
Reporter 22-OCT-99 Hawley, C.C. and Hudson, Travis L. Hawley Resource Group

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.