Occurrence in Alaska, United States with commodity Zinc

Geologic information

Identification information

Deposit ID 10307796
Record type Site
Current site name Katy-O

Geographic coordinates

Geographic coordinates: -154.24296, 63.4485 (WGS84)
Relative position This occurrence is located at an elevation of 2,000 feet (610 m) in an unnamed creek basin in Section 33, R. 23 S., R. 24 E., of the Kateel River Meridian. Location is known to within 300 feet (91 m).
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Geographic areas

Country State
United States Alaska


Commodity Importance
Zinc Primary

Materials information

Materials Type of material
Goethite Ore
Dolomite Gangue

Mineral occurrence model information

Model code 224
USGS model code 32a
BC deposit profile E12
Deposit model name Mississippi Valley, S.E. Missouri Pb-Zn
Mark3 model number 42

Host and associated rocks

  • Host or associated Host
    Stratigraphic age (youngest) Early Devonian

Nearby scientific data

(1) -154.24296, 63.4485

Comments on the geologic information

  • Geologic Description = The Katy-O occurrence is a poorly exposed gossan in a small area of unit 'Dlr' of Andrews and Rishel (1982); it is probably equivalent to the lower Whirlwind Creek Formation of Dutro and Patton (1982). Host unit is inferred to be Lower Devonian, based on fossils. The age of the mineralization is unknown. Gossan in float contains 1 percent zinc (Andrews and Rishel, 1982).
  • Ore Material = Zinc-bearing gossan
  • Age = Host unit is inferred to be Lower Devonian, based on fossils. The age of the mineralization is unknown.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name McGrath

Comments on the workings information

  • Workings / Exploration = The Katy-O occurrence was discovered by WGM Inc. and Patino Ltd. during exploration for base metals in the late 1970s on lands selected by Doyon Ltd. (Andrews and Rishel, 1982). Gossan in float contains 1 percent zinc.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF MD051

Bibliographic references

  • Deposit

    Andrews, Tom, and Rishel, John, 1982, Annual Report for 198, Reef Ridge I-to-XIII Project Areas, Kuskokwim Block, Alaska: Anchorage, Alaska, WGM Inc., Project Report 4, 45 pages, two sheets at 1:63,360 and 1:20,000 scales. (Report held by Doyon, Limited, Fairbanks, Alaska.)

  • Deposit

    Dutro, T.T. Jr., and Patton,W.W. Jr., 1982, New Paleozoic Formations in the northern Kuskokwim Mountains, west-central Alaska: U.S. Geological Survey Bulletin 1529-H, p. H13-H22.

  • Deposit

    Schmidt, J.M., 1997, Shale-hosted Zn-Pb-Ag and barite deposits of Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska, 1997: Economic Geology Monograph 9, p. 35-65.

Comments on the references

  • Primary Reference = Andrews and Rishel, 1982

General comments

Subject category Comment text
Deposit Model Name = Southeast Missouri Pb-Zn (Cox and Singer, 1986; model no. 32a) or Mississippi Valley Type
Deposit Other Comments = See Lynn-Marie (MD042) Mississippi Valley Type occurrence. The Katy-O occurrence is on land selected or conveyed to Doyon Ltd. For further information, contact Doyon Ltd. at 210 1st Ave., Fairbanks, Alaska, 99701.

Reporter information

Type Date Name Affiliation Comment
Reporter 02-JUN-98 Bundtzen, T.K. Pacific Rim Geological Consulting