Haystack Mountain

Prospect in Alaska, United States with commodities Gold, Arsenic, Tin, Tungsten, Zinc
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Nearby scientific data
  7. Economic information about the deposit and operations
  8. Mining district
  9. Links to other databases
  10. Bibliographic references
  11. General comments
  12. Reporter information

Geologic information

Identification information

Deposit ID 10307706
Record type Site
Current site name Haystack Mountain

Geographic coordinates

Geographic coordinates: -152.31699, 64.16255 (WGS84)
Relative position The Haystack Mountain prospects cover about 15 square miles and are situated in the numerous streams draining Haystack Mountain. The approximate center of the prospect area is in NW1/4SW1/4 section 5, T. 9 S., R. 24 W., of the Fairbanks Meridian. The North Fork Kuskokwim River provides access to the Haystack Mountain prospects. The southern half of Haystack Mountain, located within T. 9 S., R. 24 W., is situated on land selected by or conveyed to Doyon, Limited.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Kantishna River A-5(quadrangle 1:63,360 scale)

Kantishna River SW(quadrangle 1:100,000 scale)

Kantishna River(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Fork Kuskokwim River(hydrologic unit)

Upper Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Arsenic Critical Secondary
Tin Critical Secondary
Tungsten Critical Secondary
Zinc Critical Secondary

Nearby scientific data

(1) -152.31699, 64.16255

Economic information

Comments on the geologic information

  • Geologic Description = Haystack Mountain is composed of a quartz monzonite stock (Silberman and others, 1978) intruding hornfelsed chert, siltstone, mudstone, and argillite. The sedimentary rocks are of Ordovician to Late Devonian age (Chapman and Yeend, 1981). Sillberman and others (1978) determined a K-Ar biotite age of 64.2 plus or minus 1.9 Ma for the intrusive rock from Haystack Mountain. Regionally, the area contains a system of northeast-trending strike slip and related conjugate faults associated with Cretaceous to Tertiary plutonic rocks and coeval or younger volcanic rocks (Clautice and others, 1993). Pan concentrates collected from several streams draining the northwest, southwest, and northeast sides of Haystack Mountain contain as much as 1,650 ppb Au, 20 ppm Sn, and 135 ppm W. Stream-sediment samples contained up to 40 ppb Au, 7 ppm Sn, and 10 ppm W (Bond, 1985). A pan concentrate from a north-draining stream contained 13 ppm As, 28 ppm W, 120 ppm La, 250 ppm Ce, 29 ppm Th, and 105 ppm Sn. Two rock chip samples of gossan material contained up to 430 ppm Zn, 105 ppm Cu, 109 ppm As, 8,898 ppm Mn, and 190 ppm Sn (Clautice and others, 1993). Bond (1985) reported rock chip samples from buff-colored hornfels and black graphitic schist that contained as much as 15 ppb Au. A sample of calc-silicate hornfels contained 100 ppb Au and 776 ppm As (Clautice and others, 1993). No mineralization was observed in the Haystack Mountain quartz monzonite (Bond, 1985). A regional stream sediment sampling, airborne radiometrics, and mapping program in 1975-76 identified several anomalies (Bond, 1985). There are no indications of production.
  • Age = Probably related to Early Tertiary plutonism.

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Inactive

Mining district

District name Kuskokwim

Comments on the production information

  • Production Notes = There are no indications of production.

Comments on the workings information

  • Workings / Exploration = A regional stream sediment sampling, airborne radiometrics, and mapping program in 1975-76 identified several anomalies (Bond, 1985). In 1985, 2 rock chip, 10 stream sediment, and 7 pan concentrate samples were collected (Bond, 1985).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Bond, 1985

General comments

Subject category Comment text
Deposit Model Name = Plutonic-related mesothermal veining.
Deposit Other Comments = the southern half of Haystack Mountain, located within T. 9 S., R. 24 W., of the Fairbanks Meridian, is situated on land selected by or conveyed to Doyon, Limited. For more information, contact Doyon, Limited.

Reporter information

Type Date Name Affiliation Comment
Reporter 08-NOV-99 Cameron S. Rombach Alaska Division of Geological and Geophysical Surveys

Beyond USGS

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

Authoritative Alaska resources

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