Sullivan Creek Placer

Past Producer in Alaska, United States with commodities Gold, Tin, Silver, Copper, Chromium, Lead, REE, Rhenium
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. Land status
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10002749
MRDS ID A015203
Record type Site
Current site name Sullivan Creek Placer
Related records 10281741

Geographic coordinates

Geographic coordinates: -150.87945, 65.09405 (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

Tanana A-2(quadrangle 1:63,360 scale)

Tanana SE(quadrangle 1:100,000 scale)

Tanana(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-371, LOC. 30. PRINCIPAL MINING ACTIVITIES IN DISTRICT ON SULLIVAN CREEK NEAR TOFTY. COORDINATES GIVEN FOR MINE AT TOFTY. 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
Tin Critical Primary
Silver Primary
Copper Tertiary
Chromium Critical Tertiary
Lead Tertiary
REE Critical Tertiary
Rhenium Tertiary

Materials information

Materials Type of material
Cassiterite Ore
Anatase Gangue
Apatite Gangue
Brookite Gangue
Copper Gangue
Magnetite Gangue
Pyrite Gangue
Zircon Gangue
Chromite Unknown
Galena Unknown
Gold Unknown
Monazite Unknown
Xenotime Unknown

Analytical data

Result TWO ASSAYS SHOWED FINENESS OF 807 1/2 AND 821 AU AND 174 AND 169 AG. GRADE: 31 GLM3 AU, 6.5 GLM3 AG.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Metamorphic Rock > Phyllite

Nearby scientific data

(1) -150.87945, 65.09405

Economic information

Comments on the geologic information

  • MAJOR.UNITS: BEDROCK IS JURASSIC-CRETACEOUS PYRITIZED PHYLLITE AND SLATE CUT BY QUARTZ VEINS; SURFACE DECOMPOSED.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1907

Mining district

District name Hot Springs

Land status

Ownership category State

Workings at the site

  • Type of workings Surface
    Area 5.8HA

Comments on development

  • MINING 1907-40'S MAINLY BY OPEN CUT AND HYDRAULIC METHODS. DITCH CONSTRUCTED, 1918. DRAGLINE MINING PLANT OPERATED, 1935.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit MOST OF GOLD AND CASSITERITE IN BASAL 1-2 FT. OF GRAVEL AND IN CREVICES IN TOP FOOT OF PHYLLITE BEDROCK. GRAVELS ARE 2-14 FT. THICK AND OVERLAIN BY 40-70 FT. OF MUCK AND SILT. BENCH PLACERS HAVE RICH "SPOTS" WITH ELIPTICAL AREAS WITH RICHEST PAY IN THE MIDDLE. AT ONE MINE $200,000 WAS PRODUCED "ALMOST ENTIRELY FROM A SPACE OF 5,000 SQ. FT." CASSITERITE OCCURS AS CEMENT IN BRECCIA OF VEIN QUARTZ FRAGMENTS.
Deposit STREAM GRADIENT ABOUT 75 FT. PER MILE. DESCRIPTION FOR ENTIRE LENGTH OF SULLIVAN CREEK, A SOUTH FLOWING TRIBUTARY OF PATTERSON CREEK ; 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-MAY-1987 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.

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.