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Kizhuyak Lode, Mid

Prospect in Alaska, United States with commodities Silver, Gold, Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10002662
MRDS ID A015102
Record type Site
Current site name Kizhuyak Lode, Mid
Related records 10278850

Geographic coordinates

Geographic coordinates: -152.6394, 57.87748 (WGS84)
Relative position This prospect is located on the southeast coast of Larsen Island in sec. 35, T. 26 S., R. 21 W., of the Seward Meridian (Berg and Cobb, 1967, figure 15, locality 7; Rose and Richter, 1967, figure 1, locality 5; Cobb, 1972, MF 460, locality 15; McGee, 1972, locality 2; MacKevett and Holloway, 1977, locality 14. Site location is accurate to within a few hundred feet.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Kodiak D-2 NW(quadrangle 1:24,000 scale)

Kodiak NE(quadrangle 1:100,000 scale)

Kodiak(quadrangle 1:250,000 scale)

Federal lands

NTVALL(Federal land areas administered by NTVALL)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Copper Primary

Materials information

Materials Type of material
Arsenopyrite Ore
Chalcopyrite Ore
Gold Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Stibnite Ore
Quartz Gangue

Alteration

  • (Local) Some Quartz Rusty

Mineral occurrence model information

Model code 274
USGS model code 36a.1
Deposit model name Low-sulfide Au-quartz vein, Chugach-type
Mark3 model number 26

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone

Nearby scientific data

(1) -152.6394, 57.87748
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = This prospect, first staked in 1903 or 1904, is the northern extension of Kizhuyak Lode, south (KD018). The showings had been worked on and off by several persons up to the time of Capps' visit in 1934 (Capps, 1937) and Roehm's visit in 1936 (Roehm, 1936, PE 131-1). The quartz vein cuts granodiorite, strikes north-south to N.15 E., and dips steeply to the west. The vein is 3 to 5 feet in thickness and in most places is only slightly mineralized; however, local bands of nearly massive sulfides do occur, in some places up to 4 feet in thickness. The sulfides consist of arsenopyrite, pyrite, pyrrhotite, and traces of chalcopyrite. Roehm (1936, PE 131-1) also mentions sphalerite and stibnite, apparently present in only minor amounts. Disseminated pyrrhotite is present in the wallrock adjacent to the vein. ? A dump sample collected by Rose and Richter assayed 0.16 ounce per ton gold, 1.00 ounce per ton silver, trace copper, and 5.5 percent arsenic. A grab sample collected by Capps ran 0.14 ounce per ton gold, and 0.74 ounce per ton silver. Roehm collected 2 samples here and reported 0.02 to 0.48 ounce per ton gold and 0.10 to 1.00 ounce per ton silver. Roehm also collected a sample of the lode on the small islet just to the south and reported 0.30 ounce per ton gold and 0.40 ounce per ton silver.
  • Age = Tertiary

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Kodiak

Comments on the workings information

  • Workings / Exploration = At the time of Capps' and Roehm's visits (1934 and 1936) this prospect was developed by a 33-foot adit driven northward from the beach and an open cut located about 500 feet northeast of the adit. Several tons of sulfide ore were stacked at the portal to the adit in 1934 but there is no record of any production. Sampling by Capps, Rose and Richter, and Roehm reported 0.02 to 0.48 ounce per ton gold and 0.10 to 1.00 ounce per ton silver.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Capps, 1937

General comments

Subject category Comment text
Deposit Model Name = Chugach-type low-sulfide gold-quartz vein (Bliss, 1992; model 36a.1).
Deposit Other Comments = Site is on land conveyed to the Koniag Corporation.

Reporter information

Type Date Name Affiliation Comment
Reporter 05-OCT-1998 S.H. Pilcher U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.