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Slate Creek Placers

Producer in Alaska, United States with commodities Gold, 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. Geologic structures
  9. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10001090
MRDS ID A011775
Record type Site
Current site name Slate Creek Placers
Related records 10280560

Geographic coordinates

Geographic coordinates: -144.83186, 63.16718 (WGS84)

Site location context

Political divisions (FIPS codes)

Southeast Fairbanks(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Mount Hayes SE(quadrangle 1:100,000 scale)

Mount Hayes(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Copper River(hydrologic unit)

Copper River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • COORDINATES GIVEN ARE FOR ARBITRARILY CHOSEN POINT ON SLATE CREEK; FOR LOCATION OF INDIVIDUAL PLACER WORKINGS, SEE ADGGS GR 28, FIGURE 1 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
Platinum Critical Secondary

Materials information

Materials Type of material
Gold Ore
Platinum Ore

Analytical data

Result AU VALVED AT 18.47 DOLLARS/OZ
Result EQUIVALENT TO FINENESS OF 893.6 GIVEN AU AT 20.67 DOLLARS/FINE OZ, USGS BULL 263, P. 207

Nearby scientific data

(1) -144.83186, 63.16718
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Slate Creek Fault Zone, Denali Fault

Comments on the geologic information

  • CREEK FOLLOWS FAULT ZONE SEPARATING UPPER PALEOZOIC SLATES OF MANKOMEN FORMATION FROM CONGLOMERATE, QUARTZITE AND TUFF OF OLDER CHISANA FORMATION; VALLEY MAY BE UNDERLAIN BY GRABEN CONTAINING CURIFEROUS CONGLOMERATE, SANDSTONE AND SHALE OF TETIARY GAKONA FORMATION ; MAJOR.UNITS: SEE GEOLOGY COMMENTS ; REG.COM: PROXIMAL SOURCE TERTIARY CONGLOMERATE AND BENCHES OF GLACIAL ORIGIN; ULTIMATE SOURCE PROBABLY IN ROCKS N OF DENALI FAULT; AU PROBABLY RECONCENTRATED SEVERAL TIMES

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1900

Comments on development

  • MINED SINCE 1900; ABOUT 1/3 OF PRODUCTION TOOK PLACE BETWEEN 1898 AND 1907; MAJOR MINING ENDED 1962; SMALL-SCALE MINING SINCE THEN

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THREE AGES OF GRAVELS CONTAIN AU: 1. PRESENT STREAM GRAVELS, 2. BENCH GRAVELS OF GLACIAL ORIGIN ON W SIDE OF LOWER SLATE CREEK, 3. TERTIARY CONGLOMERATE; STREAM GRAVELS ARE THE SOURCE OF NEARLY ALL PRODUCTION, BUT BENCH DEPOSITS CONTAIN ECONOMICALLY SIGNIFICANT VALVES LOCALLY; RICHEST PLACERS WERE AT AND BELOW JUNCTION WITH MILLER GULCH; CLAIMS ABOVE MILLER GULCH MUCH LEANER THAN THOSE BELOW
Deposit MAJOR PRODUCER OF CHISTOCHINA DISTRICT, SEE ALSO: MILLER GULCH ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1985 Leonard, Kenneth R. (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.