The Mak North is a gold and silver 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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Mak North MRDS details
Site Name
Primary: Mak North
Commodity
Primary: Gold
Primary: Silver
Secondary: Arsenic
Secondary: Mercury
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: Prospect
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
Ore: Pyrite
Gangue: Quartz
Comments
Comment (Reference): Primary Reference = Randolph, 1991
Comment (Deposit): Model Name = Epithermal gold vein
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). The Mak North vein system is intermittently exposed over a lateral distance of at least 9,000 feet (2,800 m) and a vertical distance of 1,000 feet (300 m). The veins are composed of massive, milky quartz that has been brecciated and then healed by multiple void-filling bands of cockscomb quartz. The Mak North vein system has a reported range in thickness from 2 to 20 feet (0.7 to 7 m).
Comment (Deposit): Other Comments = See also UN009, UN011
Comment (Geology): Age = Late Tertiary or younger
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = The main or 'discovery' zone was originally located from the air and was channel sampled using a line spacing of roughly 15 m. This sampling outlined a length of about 60 m having gold values averaging 0.024 oz/t (0.82 ppm), and having a highest value of 0.034 oz/t (1.17 ppm) over 7.5 m. Other sampling of the vein yielded gold values as high as 690 ppb. The veins have identical Au/Ag/Hg/As and base metal signatures as the east-west veins in the Makushin Valley (UN009) occurrence (Randolph, 1991).
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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