Port Houghton Copper Prospect

The Port Houghton Copper Prospect is a copper mine located in Alaska at an elevation of 751 feet.

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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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: Port Houghton Copper Prospect

Commodity

Primary: Copper

Location

State: Alaska
District: Petersburg

Land Status

Land ownership: National Forest
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

Not available

Workings

Type: Surface/Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: L
Description: Foliation Strikes N 50 Degrees-55 Degrees W

Alterations

Not available

Rocks

Not available

Analytical Data

Analytical Data: GRAB SAMPLE ACROSS VEIN ASSAYED 1.34% CU-USGS B 773, P. 130

Materials

Ore: Chalcopyrite
Gangue: Pyrite
Gangue: Pyrrhotite
Gangue: Garnet
Gangue: Quartz
Gangue: Magnetite

Comments

Comment (Deposit): FISSURE VEIN IN SHEAR ZONE BETWEEN LIGHT-COLORED QUARTZ-FELDSPAR SCHIST AND BLACK HORNBLENDE SCHIST VARIES IN WIDTH FROM 2-12 FT.. VEIN CONTAINS QUARTZ, GARNET, AMPHIBOLE, PYRRHOTITE, PYRITE, MAGNETITE, CHALCOPYRITE.

Comment (Commodity): DOUBTFUL TRACES OF AU, NI REPORTED IN ASSAY.

Comment (Location): USGS MF-425, LOC. 18; LOCATION MAY BE INACCURATE. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Development): DEVELOPMENT HISTORY UNKNOWN, BUT THREE ADITS WERE DRIVEN AND THREE OPEN CUTS MADE MANY YEARS BEFORE 1923. NO PRODUCTION RECORDED. PROSPECT WAS ABANDONED BY 1923.

Comment (Workings): THREE ADITS AND THREE OPEN CUTS. TWO SHORT ADITS AND THREE OPEN CUTS CROSSCUT VEIN OVER STRIKE LENGTH OF 450 FT.. MAIN ADIT IS 60 FT. BELOW VEIN OUTCROP, AND CONSISTS OF 110 FT. TUNNEL WITH 115 FT. DRIFT FOLLOWING VEIN.

Comment (Geology): VEIN PARALLELS STRIKE OF FOLIATION OF SCHIST. LIGHT-COLORED QUARTZ-FELDSPAR SCHIST, BLACK HORNBLENDE SCHIST.

Comment (Deposit): THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

References

Reference (Other Database): BAG-MF-425-18

Reference (Deposit): USGS OF 78-698, P. 21 (1978)

Reference (Deposit): USGS B 773, P. 128-130 (1925)

Reference (Deposit): USGS MF-425, LOC. 18 (1972)

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