The Ebbert is a gold 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
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Ebbert MRDS details
Site Name
Primary: Ebbert
Commodity
Primary: Gold
Secondary: Lead
Secondary: Tin
Secondary: Antimony
Secondary: Silver
Secondary: Arsenic
Location
State: Alaska
District: Fairbanks
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Arsenopyrite
Ore: Galena
Ore: Gold
Ore: Jamesonite
Ore: Stibnite
Comments
Comment (Geology): Geologic Description = Gold is found in quartz-rich portions of a shear zone. The lode was sampled and mapped in 1968 and indicated extremely high gold, silver, lead, antimony, arsenic and tin values (Forbes and others, 1968). Quartz veins and wall rock in old prospect trenches carry as much as 2.87 ppm Au (Pilkington and others, 1969, p. 11). Veins that strike N 70 W, dip 55 S, and veins that strike N 65 E, dip 70 S. Altered schist as much as 1 foot into the footwall of the latter vein carries significant gold. Grab samples from veins contained betweeen 0.05 and 2.87 ppm Au (Pilkington and others, 1969). In 1969, the Ebberts prospect was sampled by International Minerals and Chemicals (IMC) in the vicinity of the main shaft. At this point, the shear zone trends N 85 W and dips 60 S and consists of narrow quartz stockwork zones on the hanging wall and foot wall, separated by altered schist. Stibnite and jamesonite occur on the hanging wall as kidney shaped masses. The mineralized zone was 13 feet wide and averaged 0.06 ounces of gold per ton and 8.4 ounces of silver per ton (Pilkington, 1970). IMC also excavated a dozer trench which crossed the Ebberts shear 200 feet east of the Ebberts shaft. The trench exposure assayed 0.046 ounces of gold per ton and 0.32 ounces of silver per ton over 25 feet.
Comment (Reference): Primary Reference = Pilkington, 1970
Comment (Deposit): Model Name = Polymetallic vein (Cox and Singer, 1986; model 22c).
Comment (Workings): Workings / Exploration = The first activity was by Hugh M. Hinton who conducted hand trenching on the prospect (Saunders, 1960; ATDM MR 49-4). The prospect remained inactive until dozer trenching was conducted by United States Smelting Refining and Mining (USSR"&"M) sometime around 1950. Initial exploration examined the prospect's potential for antimony. In June 1960, Arctic Alaska Fisheries and Enterprises Inc. conducted dozer trenching on the prospect and exposed the Ebberts shear zone which was referred to as the Jamesonite shear zone (Saunders, 1960; ATDM MR 49-4). The Ebbert prospect was mined for antimony via a shallow shaft and open cuts from 1961 through 1964 by Ed Ebbert (R. Vetter, oral commun., 1986). The prospect was idle until 1967 when Ed Ebbert re-opened the shaft and open cuts after finding higher gold values in quartz-rich portions of the shear zone (Anderson and Johnson, 1970). In 1969, the Ebberts prospect was sampled by International Minerals and Chemicals (IMC) in the vicinity of the main shaft (Pilkington, 1970). IMC also excavated a dozer trench which crossed the Ebberts shear 200 feet east of the Ebberts shaft.
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Saunders, R.H., 1960, Notes to accompany prospect map of the Fairbanks-Wolf Creek divide: Alaska Territorial Department of Mines Miscellaneous Report 49-4, 3 p., 2 maps, scale 1:1200.
Reference (Deposit): Pilkington, H.D., 1970, Keystone Mines Inc. exploration program summary: International Minerals & Chemicals Corporation, 61 p. , 1 plate.
Reference (Deposit): Forbes, R.B., Pilkington, H.D., and Hawkins, D.B., 1968, Gold gradients and anomalies in the Pedro Dome-Cleary Summit area, Fairbanks District, Alaska: U.S. Geological Survey Open-File Report 324, 43 p.
Reference (Deposit): Saunders, R.H., 1960, Notes to accompany prospect map of the Fairbanks-Wolf Creek divide: Alaska Territorial Department of Mines Miscellaneous Report 49-4, 3 p., 2 sheets, scale 1:1200.
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