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

Long Area

Past Producer in Alaska, United States with commodities Gold, Silver, Tin, Platinum
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Land status
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10000542
MRDS ID A010743
Record type Site
Current site name Long Area
Alternate or previous names Trail Creek, Birch Creek, Flint Creek, Granite Creek, Greenstone Creek

Geographic coordinates

Geographic coordinates: -155.49752, 64.33838 (WGS84)

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-5(quadrangle 1:63,360 scale)

Ruby S(quadrangle 1:100,000 scale)

Ruby(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • A PRODUCTIVE PLACER AREA OF APPROXIMATELY 100 SQ MI. ROUGHLY CENTERED AROUND GIVEN LOCATION 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
Tin Critical Secondary
Platinum Critical Secondary

Materials information

Materials Type of material
Cassiterite Ore
Gold Ore
Platinum Ore

Analytical data

Result FINENESS OF GOLD AVERAGES ABOUT 0.85 AU, 0.12 AG

Nearby scientific data

(1) -155.49752, 64.33838
ListMap

Economic information

Comments on the geologic information

  • REG.COM: SEVERAL STREAMS HEAD NEAR CONTACT AUREOLE OF GRANITOIDS

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1911
Year of last production 1975

Mining district

District name Ruby District

Land status

Ownership category State

Comments on the production information

  • PRODUCED SOMEWHERE BETWEEN 75,000 TOZ AND 200,000 TOZ AU, SEVERAL THOUSAND (15,000?) LBS OF CASSITERITE CONCENTRATES, 15,000-30,000 TOZ AG AND A FEW OUNCES OF PLATINUM

Reference information

Bibliographic references

  • Deposit

    USGS B 1374, P. 167-169

  • Deposit

    USGS OFR 81-170, P. 10-11, 16-17, 32, 40-42, 51-52, 81-83

General comments

Subject category Comment text
Deposit GOLD IN CONCENTRATED IN FEW FEET ABOVE BEDROCK, BUT MANY STREAMS HAVE 150-250 FEET OF GRAVEL ABOVE BEDROCK

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1984 Hirschmann, M. M. (Elliott, R. L.) 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.