Dowry Creek Platinum Placer

The Dowry Creek Platinum Placer is a pge mine located in Alaska at an elevation of 249 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Dowry Creek Platinum Placer

Commodity

Primary: PGE
Secondary: Gold
Tertiary: Chromium

Location

State: Alaska

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1928
Year Last Production: 1941
Discovery Year: 1928
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Gravel
Role: Host
Age Type: Host Rock
Age Young: Holocene

Analytical Data

Analytical Data: GRADE OF PGM (MEAN OF 5 ANALYSES, RECOMPUTED FREE OF IMPURITIES): 87.56% PT, 7.34% IR, 1.47% OS, 0.12% RU, 1.25% RH, 0.46% PD, 1.80% AU: USGS P 938, P. 26.

Materials

Ore: Gold
Gangue: Magnetite
Gangue: Ilmenite
Unknown: Chromite

Comments

Comment (Workings): LITTLE INFORMATION AVAILABLE ON WORKINGS. PROBABLY USED SAME DRAGLINE EXCAVATOR THAT WAS USED ON CLARA CREEK. ABOUT 0.6 MI. OF TAILINGS VISIBLE ON TOPO MAP.

Comment (Development): 1 CLAIM ESTABLISHED (DISCOVERY). CREEK MINED BY CLARA CREEK MINING CO. AFTER CLARA CREEK PLACER WAS MINED OUT. DOWRY CREEK WAS MINED OUT BY 1940 OR 1941.

Comment (Deposit): LITTLE INFORMATION AVAILABLE. PRESUMABLY MODERN STREAM AND GLACIOFLUVIAL GRAVELS, COBBLES, BOULDERS. PAYSTREAK PROBABLY 0.6 MI. LONG, JUDGING FROM TAILINGS.

Comment (Location): USGS MF-362, LOC. 11. LOCATION IS AT MOUTH OF DOWRY CREEK ON SALMON RIVER, ON ROAD. PLACER EXTENDS AT LEAST 0.6 MI UPSTREAM ON DISCOVERY CLAIM. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991). 1:250000 QUADRANGLE IS A 1957 VERSION.

Comment (Geology): MAJOR.UNITS: BEDROCK CONSISTS MAINLY OF ULTRA BASIC ROCKS OF THE GOODNEWS BAY ULTRAMAFIC COMPLEX (TERT-MES), AS WELL AS UPPER PALEOZOIC (?) SEDIMENTARY ROCKS DOWNSTREAM. ; REG.COM: SOURCE OF PLACER PROBABLY GOODNEWS BAY ULTRAMAFIC COMPLEX.

Comment (Deposit): STREAM GRADIENT 400-500 FT/MI. LITTLE INFORMATION AVAILABLE ON THIS DEPOSIT. TRIBUTARY OF SALMON RIVER. ; INFO.SRC : 1 PUB LIT

Comment (Deposit): THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

References

Reference (Other Database): BAG-MF-362-11

Reference (Deposit): USGS B 918, P. 53 (1940)

Reference (Deposit): USBM OFR 51-86, P. 2, 6, 7 (1986)

Reference (Deposit): USGS MF-362, LOC. 11 (1972)

Reference (Deposit): USGS OF 80-909, P. 17 (1980)

Reference (Deposit): USGS P 938, P. 4, 5, 23, 26 (1976)

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