Poorman Creek Placer

Producer in Alaska, United States with commodities Gold, Silver, Tin, Barium-Barite

Geologic information

Identification information

Deposit ID 10107559
MRDS ID A015558
Record type Site
Current site name Poorman Creek Placer
Related records 10208677

Geographic coordinates

Geographic coordinates: -155.5475, 64.09948 (WGS84)
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-405, LOC. 30. TAILINGS MARKED ON RUBY (A-6). COORDINATES GIVEN FOR VILLAGE OF POORMAN. 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 Tertiary
Barium-Barite Tertiary

Materials information

Materials Type of material
Cassiterite Ore
Gold Ore
Barite Unknown

Analytical data

Result ASSAYS SHOWED FINENESS 835-853 1/4 AU AND 154-159 AG

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Metamorphic Rock > Phyllite
  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert

Nearby scientific data

(1) -155.5475, 64.09948

Comments on the geologic information

  • GEOLOGIC CONDITIONS NOT FULLY UNDERSTOOD. POORMAN CR. AREA PROBABLY AT WESTERN LIMIT OF MINERALIZED ZONE. VALLEY WIDE, OPEN, AND ASYMMETRIC; NORTH SLOPE LONGER AND GENTLER THAN SOUTH SLOPE. ; MAJOR.UNITS: BEDROCK WAS PARTLY A CRENULATED PHYLLITE, APPROACHING A SCHIST, AND PARTLY MICA RHYOLITE PORPHYRY PROBABLY BELONGING TO THE PALEOZOIC OR MESOZOIC LAVAS. (ONLY GRANITIC ROCK FOUND IN PLACE IN POORMAN AREA). ; REG.COM: LODE SOURCE PROBABLY CLOSE AND GOLD ACCUMULATED OVER A LONG EROSION INTERVAL.

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Both metallic and non-metallic
Deposit size Small
Significant No
Discovery year 1912
Discoverer Thomas Armstrong, Gus Olson
Year of first production 1913

Mining district

District name Ruby

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner Howard Miscovich
    Home office P.O. Box 28, Mcgrath, Ak. 99627
  • Type Owner
    Owner Miscovich Mining Co.

Comments on the workings information

  • SEVERAL SHAFTS SUNK TO BEDROCK FOR PROSPECTING AND DRIFT MINING.

Comments on development

  • GOLD DISCOVERED 1912. MINED ON VARIOUS SCALES THROUGH 1976. DRIFT MINING REPORTED. MINED IN 1975 BY DRAGLINE AND BULLDOZER.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015558

Bibliographic references

  • Deposit

    USGS MF-405 (A-6), LOC. 30

  • Deposit

    USGS BULL 642, P. 247-248

  • Deposit

    USGS BULL. 864-C, P. 158-162, 165-166

  • Deposit

    USGS OF 77-168 D, P. 88, LOC. 39.

General comments

Subject category Comment text
Deposit Discovery Year: SPRING 1912
Deposit MOST OF GOLD LIES ON BEDROCK OR CLOSE TO BEDROCK. IN PLACES GOLD EXTENDS DOWN INTO THE BEDROCK FOR 2 OR 3 FEET; IN PLACES GOLD EXTENDS UP INTO 2 OR 3 FEET OF GRAVEL. MOST OF MINING ON BENCH CLAIMS OVER A DISTANCE OF ABOUT 3 MILES ALONG THE NORTH BANK OF THE CREEK; THE BURRIED CHANNELS MINED IN PLACES LIE ON THE SECOND-TIER BENCH. BELOW TENDERFOOT CR. THE MAIN PAY STREAKS SWING TO THE SOUTH SIDE OF THE PRESENT CREEK. PAY STREAKS IN OLD CHANNELS NOT RELATED TO THE PRESENT DRAINAGE; 2.5-3 MILES LONG AND AS MUCH AS 1,000 + FT. WIDE. GRAVEL 2-28 FT. THICK; OVERLAIN BY "CHICKEN FEED" AND MUCK. ALLUVIUM 45-80 FT. DEEP. A TYPICAL SECTION CONSISTS OF 6 FT. OF COARSE GRAVEL, 5 FEET OF FINE GRAVEL, AND 44 FEET OF MUCK; ALL FROZEN.
Deposit STREAM GRADIENT UNDER 50 FEET PER MILE. PLACERS MAY NOT HAVE BEEN COMPLETELY PROSPECTED. MOST OF PLACER GROUND PROBABLY HAS BEEN DISCOVERED AND MINED OUT. ; 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-1987 Powers, M.T. (Huber, D.F.) U.S. Geological Survey