Little Minook Jr. Cr. Placer

Past Producer in Alaska, United States with commodities Gold, Lead

Geologic information

Identification information

Deposit ID 10002767
MRDS ID A015228
Record type Site
Current site name Little Minook Jr. Cr. Placer
Related records 10160397

Geographic coordinates

Geographic coordinates: -150.04196, 65.44685 (WGS84)
Relative position ABOUT 5 MILES SSE OF RAMPART
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-371, LOC. 49. COORDINATES GIVEN ARE FOR MINE MARKED ON TANANA (B-1) NEAR HEAD OF CREEK. PLACER GROUND CONTINUES DOWNSTREAM TO MOUTH AND UPSTREAM FOR 1/4 MI. 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
Lead Tertiary

Materials information

Materials Type of material
Barite Gangue
Garnet Gangue
Hematite Gangue
Ilmenite Gangue
Magnetite Gangue
Sphene Gangue
Zircon Gangue
Galena Unknown
Gold Unknown

Analytical data

Result FINENESS ABOUT 915-920 AU AND 75-80 AG
Result 13 GLM3 AU, 1.1 GLM3 AG.

Nearby scientific data

(1) -150.04196, 65.44685

Ore body information

  • Width 18.29M

Comments on the geologic information

  • VALLEY NARROW WITH STEEP WALLS. SURFACE OF BEDROCK VERY UNEVEN. ; MAJOR.UNITS: BEDROCK OF LOWER PART OF VALLEY IS DIABASE AND GREENSTONE; FURTHER UPSTREAM BEDROCK IS CHERT AND IRON STAINED TUFF; CREEK HEADS IN PLIOCENE (?) HIGH GRAVEL BENCH. ; REG.COM: GOLD THOUGHT TO BE RECONCENTRATED FROM THE EROSION OF THE AURIFEROUS GRAVEL OF CALIFORNIA BAR.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1898

Workings at the site

  • Type of workings Surface/Underground
    Area 1.1HA

Comments on the workings information

  • GRAVEL IS USUALLY FROZEN.

Comments on development

  • GOLD DISCOVERED IN 1898 OR SOON THEREAFTER; INTERMITTENT SMALL-SCALE MINING UNTIL AT LEAST WW II. DRIFT AND OPEN-CUT MINING REPORTED.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015228

Bibliographic references

  • Deposit

    USGS MF-371 (B-1), LOC. 49

  • Deposit

    USGS BULL. 844-D, P. 165, 175, 184-85, 234

  • Deposit

    USGS BULL. 337, P. 77-78

  • Deposit

    USGS OF 85-213, P. 32-33

General comments

Subject category Comment text
Deposit GOLD IN UPPER 1.5 FT. OF BEDROCK. GRAVEL CARRIES LITTLE GOLD. GRAVEL 4-5 FT. THICK BENEATH 18-25 FT. OF MUCK. MOST OF PAY IN CREEK; BENCHES CONTAIN GOLD IN PLACES.
Deposit STREAM GRADIENT 385 FEET TO THE MILE. WATER SUPPLY IS VERY MEAGER; CREEK USUALLY DRY DURING THE SUMMER. DISCOVERY CLAIM AT MOUTH. LITTLE MINOOK JR. AND FLORIDA CREEKS ARE THE ONLY SMALL TRIBUTARIES OF MINOOK CR. FROM E. OF ANY ECONOMIC IMPORTANCE. ; 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