Brew No. 28

The Brew No. 28 is a copper 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.

Site Name

Primary: Brew No. 28
Secondary: Locality 64
Secondary: Johns Hopkins Inlet North
Secondary: North Shore Johns Hopkins Inlet

Commodity

Primary: Copper
Tertiary: Molybdenum
Tertiary: Silver

Location

State: Alaska
District: Juneau District

Land Status

Land ownership: National Park
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Type: Minerals Only

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Mining Method: Unknown
Discovery Year: 1937
Years of Production:
Organization:
Significant: N

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

Unknown: Pyrrhotite
Unknown: Goethite
Unknown: Hornblende
Unknown: Ilmenite
Unknown: Muscovite
Unknown: Oligoclase
Unknown: Orthoclase
Unknown: Plagioclase
Unknown: Pyrite
Unknown: Calcite
Unknown: Magnetite
Unknown: Garnet
Unknown: Epidote
Unknown: Chlorite
Unknown: Quartz
Unknown: Sericite
Unknown: Sphene
Unknown: Zircon
Unknown: Actinolite
Unknown: Albite
Unknown: Andesine
Unknown: Apatite
Unknown: Biotite
Unknown: Chalcopyrite
Unknown: Sphalerite

Comments

Comment (Deposit): DISC. 1938. NO CLAIMS. SEVERAL ALTERED & MINERALIZED ZONES WITHIN CONTACT ZONE OF PREDOMINANTLY DIORITIC TERRAIN AND GREENSTONE, PHYLLITE OR GRANODIORITE GENERALLY NEAR INTRUSIVE CONTACTS. A FEW ALTERED ZONES NEAR MAFIC DIKES. FEW SULFIDE LENSES PRESENT. BEST VALUES: 1000 PPM CU, TRACE OF MO & AG. SULFIDES: PYRITE & VERY LITTLE CHALCOPYRITE ZONES LARGE BUT TOO LOW GRADE TO ENCOURAGE EXPLORATION. NO ALASKA KARDEX. POINT TO INCLUDE COPPER MINERALIZATION FOR 2 MILES EAST AND WEST OF PLOTTED POINT. EQUIVALENT TO MACKEVETT LOCATION NUMBER 64 AND BREW LOCATION NUMBER 28.

References

Reference (Deposit): MR111-1 pp. 52-80

Reference (Deposit): ECON G 3801 pp. 52-80

Reference (Deposit): OF280 pp. 86-87

Reference (Deposit): P632 pp. 38-39, 51-52

Reference (Deposit): MF436

Reference (Deposit): OF78-316 p. 26

Reference (Deposit): OF78-494 plates 1A, 1B, 2

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