Harrais

Prospect in Alaska, United States with commodities Copper, Silver, Lead, Zinc

Geologic information

Identification information

Deposit ID 10001482
MRDS ID A011683
Record type Site
Current site name Harrais
Related records 10136695

Geographic coordinates

Geographic coordinates: -141.62435, 61.02774 (WGS84)
Relative position 1 mi north of toe of Chitina Glacier, at midpoint of unnamed tributary of Chitina River. Best location: MacKevett, 1976, loc. 2. Accurate within radius of 1,000 feet.
(click for info)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Lead Secondary
Zinc Secondary

Materials information

Materials Type of material
Azurite Ore
Bornite Ore
Chalcopyrite Ore
Galena Ore
Malachite Ore
Sphalerite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble
    Rock unit name Skolai Group
    Rock description Skolai Group
    Stratigraphic age (youngest) Late Permian
    Stratigraphic age (youngest) Late Permian

Nearby scientific data

(1) -141.62435, 61.02774

Comments on the geologic information

  • Geologic Description = Small, sporadically distributed pods and disseminations of chalcopyrite, galena, sphalerite, bornite, pyrite, silver, malachite and azurite. Localized in shear zones mainly in Permian marble.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Nizina

Comments on the workings information

  • Workings / Exploration = Several short drifts and surface workings. Assay of massive sulfide pod showed: 4.78 percent Cu, 6.53 percent Pb, 13.15 percent Zn (Seitz, 1963).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011683
USGS Alaska Resource Data File ARDF MC213

Bibliographic references

  • Deposit

    Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.

  • Deposit

    MacKevett, E.M., Jr., 1976, Mineral deposits and occurrences in the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-773-B, scale 1:250,000.

  • Deposit

    Seitz, J.F., 1963, Copper prospect in the upper Chitina Valley, Alaska, in Contributions to Economic Geology of Alaska: U.S. Geological Survey Bulletin 1155, p. 66-72.

Comments on the references

  • Primary Reference = Seitz, 1963

General comments

Subject category Comment text
Deposit Model Name = Lode: massive, disseminated.

Reporter information

Type Date Name Affiliation Comment
Reporter 31-OCT-1997 Leonard, K.R. U.S. Geological Survey
Reporter 31-OCT-1997 Elliott, R.L. U.S. Geological Survey
Reporter 31-OCT-1997 Richter, D.H. U.S. Geological Survey