The Mid Vein 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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Mid Vein MRDS details
Site Name
Primary: Mid Vein
Commodity
Primary: Gold
Secondary: Arsenic
Location
State: Alaska
District: Aleutians
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Epithermal vein, generic
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Regional propylitic alteration; no apparent wall-rock alteration around vein.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Comments
Comment (Workings): Workings / Exploration = Twelve channel samples collected along discontinuous outcrop. Six samples yielded gold values between 100 and 650 ppb. The 2 highest samples yielded 1,062 ppb (over 6 m) and 1,748 ppb (over 2 m) gold.
Comment (Exploration): Status = Inactive
Comment (Reference): Primary Reference = Randolph, 1991
Comment (Deposit): Model Name = Epithermal gold vein
Comment (Deposit): Other Comments = See UN009, UN010
Comment (Geology): Geologic Description = Very similar to Makushin Valley (UN009) vein; in particular the east-west trending part of the Makushin Valley vein system. Quartz veins occur in propylitically altered porphyritic andesite and andesitic volcaniclastic rocks of the Unalaska Formation (see Drewes and others, 1961). Discontinuously exposed for at least 900 m on strike, having a width of 5 to 7.5 m.
Comment (Geology): Age = Late Tertiary or younger
References
Reference (Deposit): Drewes, Harold, Fraser, G.D., Snyder, G.L., and Barnett, H.F., Jr., 1961, Geology of Unalaska Island and adjacent insular shelf, Aleutian Islands, Alaska: U.S. Geological Survey Bulletin 1028-S, p. 583-676.
Reference (Deposit): Randolph, D.B., 1991, Unalaska project, 1990 final report: Battle Mountain Exploration Company, Alaska District, 62 p., 5 appendices, 15 plates, various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)
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