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Ophir Creek Placer

Past Producer in Alaska, United States with commodity 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. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10003030
MRDS ID A015548
Record type Site
Current site name Ophir Creek Placer
Related records 10281599

Geographic coordinates

Geographic coordinates: -154.50308, 64.49952 (WGS84)
Location accuracy 10000(meters)

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Ruby S(quadrangle 1:100,000 scale)

Ruby C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Nowitna National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-405, LOC. 25. PLACER MINE MARKED ON RUBY (B-5). TRIBUTARY OF THE SULATNA RIVER.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -154.50308, 64.49952
ListMap

Economic information

Comments on the geologic information

  • MAJOR.UNITS: BEDROCK PROBABLY GREENSTONE CLOSE TO CONTACT WITH SCHIST.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1913

Mining district

District name Ruby

Comments on development

  • RICH GOLD DISCOVERY REPORTED IN 1913; NO MINING IN 1915. WAS SOME MINING IN 1955 AND/OR 1956. APPARENTLY INACTIVE FOR A NUMBER OF YEARS PRIOR TO 1976. NO ACTIVITY IN 1975-76; CONDITION OF AIRSTRIP ON RIDGE AND ROAD TO CREEK AND OF TAILINGS LOOKED AS THOUGH WORK HAD BEEN DONE IN THE 1950'S.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GOLD IN STREAM PLACER.
Deposit STREAM GRADIENT APPROXIMATELY 100 FEET PER MILE IN MINING AREA. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-87 Powers, M.T. (Huber, D.F.) 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.