Mak North

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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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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