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.
Tofty Gulch Placer MRDS details
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.
