Tofty Gulch Placer

The Tofty Gulch Placer is a gold, silver, and tin mine located in Alaska.

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: Tofty Gulch Placer

Commodity

Primary: Gold
Primary: Silver
Primary: Tin
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: Producer
Operation Type: Unknown
Year First Production: 1909
Discovery Year: 1906
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

Not available

Analytical Data

Not available

Materials

Ore: Gold
Unknown: Cassiterite
Unknown: Chromite

Comments

Comment (Deposit): Discovery Year: 1906-07

Comment (Deposit): GOLD IN GRAVEL AND IN UPPER 2-3 FT. OF BEDROCK. GRAVEL AS MUCH AS 7 FT. THICK BENEATH 10-25 FT. OF FROZEN MUCK AND SILT.

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

Comment (Location): USGS MF-371, LOC. 29. COORDINATES REPRESENT MINE MARKED NEAR MOUTH OF TOFTY GULCH ON TANANA (A-2). LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Development): GOLD DISCOVERED IN WINTER OF 1906-07. MINING IN 1909-12, 1917, 1929, 1941, AND 1975. DITCH BUILT FOR OPEN-CUT MINING, 1908. MINED BY WASHING PLANT, 3 BULLDOZERS, AND 2 DRAGLINES IN 1975. PROSPECT DRILLING WEST OF GULCH IN 1941.

Comment (Geology): GRAVEL CONTAINS QUARTZITE AND OTHER EXOTIC BOULDERS. ; MAJOR.UNITS: BEDROCK IS JURASSIC-CRETACEOUS PHYLLITE AND INTERBEDDED GRAYWACKE. BEDROCK CONTAINS MANY QUARTZ VEINS THAT CARRY A LITTLE PYRITE, BUT NO GOLD OR CASSITERITE.

Comment (Deposit): STREAM GRADIENT ABOUT 75 FT. PER MILE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

References

Reference (Deposit): USGS MF-371 (A-2), LOC. 29

Reference (Deposit): USGS BULL. 1058-I, P. 374, 379-82, 397

Reference (Deposit): USBM RI. 5373, P. 6-8

Reference (Deposit): USGS BULL. 535, P. 33

The Top Ten Gold Producing States

These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.