Hidden Treasure

Prospect in Alaska, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10001082
MRDS ID A011766
Record type Site
Current site name Hidden Treasure
Related records 10161035

Geographic coordinates

Geographic coordinates: -143.88254, 61.80077 (WGS84)
Relative position In 5,700 ft elevation saddle, between Fall Creek and Kluvesna Glacier. Best location: MacKevett, 1976, loc. 182. Accurate within radius of 1,000 feet.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Copper Primary

Comments on the commodity information

  • Ore Material = Copper (native)

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Copper Ore

Mineral occurrence model information

Model code 87
USGS model code 23
BC deposit profile D03
Deposit model name Basaltic Cu (BC name is Volcanic redbed Cu)
Mark3 model number 118

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
    Rock unit name Nikolai Greenstone
    Rock description Nikolai Greenstone
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -143.88254, 61.80077

Comments on the geologic information

  • Geologic Description = Bornite and chalcocite in thin veins, and native Cu and chalcocite in amygdules, in Triassic Nikolai Greenstone.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chistochina

Comments on the workings information

  • Workings / Exploration = A short adit and surface open cuts.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011766
USGS Alaska Resource Data File ARDF MC002

Bibliographic references

  • Deposit

    Mendenhall, W.C., 1905, Geology of the central Copper River region, Alaska: U.S. Geological Survey Professional Paper 41, 133 p.

  • Deposit

    Moffit, F.H., and Maddren, A.G., 1909, Mineral resources of the Kotsina-Chitina region, Alaska: U.S. Geological Survey Bulletin 374, 103 p.

  • Deposit

    Moffit, F.H., and Mertie, J.B., Jr., 1923, The Kotsina-Kuskulana district, Alaska: U.S. Geological Survey Bulletin 745, 149 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.

Comments on the references

  • Primary Reference = Moffit and Mertie, 1923

General comments

Subject category Comment text
Deposit Model Name = Basaltic Cu
Deposit Other Comments = One of many failed attempts to develop a native Cu lode.

Reporter information

Type Date Name Affiliation Comment
Reporter 30-OCT-1997 Leonard, K.R. U.S. Geological Survey
Reporter 30-OCT-1997 Elliott, R.L. U.S. Geological Survey
Reporter 30-OCT-1997 Richter, D.H. U.S. Geological Survey