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Dennis Ladue

Prospect in Alaska, United States with commodities Gold, Silver, Barium-Barite, Molybdenum, Antimony, Tungsten, Zinc
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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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10308368
Record type Site
Current site name Dennis Ladue

Geographic coordinates

Geographic coordinates: -142.27463, 63.41873 (WGS84)
Relative position The Dennis Ladue prospect is an area of about 8 square miles. The latitude and longitude correspond to approximately the center of the property. The prospect covers most of sections 11-15 and 21-36, T. 19 N., R. 16 E., of the Copper River Meridian. The location is accurate.

Site location context

Political divisions (FIPS codes)

Southeast Fairbanks(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tanacross B-3(quadrangle 1:63,360 scale)

Tanacross SW(quadrangle 1:100,000 scale)

Tanacross C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Doyon, Limited(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Barium-Barite Critical Secondary
Molybdenum Secondary
Antimony Critical Secondary
Tungsten Critical Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Pyrite Ore
Quartz Gangue
Tourmaline Gangue

Alteration

  • (Local) Alteration at the prospect consists of intense silicification within the granite and rhyolite (DiMarchi and others, 1989).

Nearby scientific data

(1) -142.27463, 63.41873
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Dennis Ladue prospect is underlain by granite, syenite, aplite and porphyritic rhyolite phases of a composite felsic stock. This stock intrudes chlorite schists, biotite schists, and quartzite. The alteration at the property is structurally controlled, and shows evidence of intense silicification within the granite and the rhyolite (DiMarchi and others, 1989). Quartz veins and vein breccia follow north-trending shoots; the veins have traces of pyrite and tourmaline (DiMarchi and others, 1989). The prospect lies within the eastern portion of the Y1 subterrane of the Yukon-Tanana terrane (Foster and others, 1994). In 1995, a re-analysis of WGM Inc. soil and silt samples by Doyon Ltd. revealed anomalous values of tungsten, silver, gold, antimony, arsenic, barium, molybdenum, and zinc.

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Active

Mining district

District name Fortymile

Comments on the workings information

  • Workings / Exploration = In 1975, WGM Inc. conducted a stream silt reconnaissance program on the property, and in 1981 Arctic Resources Inc. analyzed ridgeline soils. In 1985, Doyon Ltd. reanalyzed the silt and soils that contained greater than 20 ppb gold. In 1989 Central Alaska Exploration Corp. did mapping as well as rock, soil, and stream sediment sampling. In 1991, Central Alaska Gold Company conducted rock and soil sampling for gold mineralization.

Reference information

Bibliographic references

  • Deposit

    Foster, H.L., 1970, Reconnaissance geologic map of the Tanacross quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geological Investigations Map I-593, 1 sheet, scale 1:250,000.

  • Deposit

    DiMarchi, J.J., Flanders, R.W., Freeman, L.K., Puchner, C.K., Rohtert, W.R., Stubbs, G.S., and Tolbert, R.S., 1989, 1989 annual report, Alaska field operations, volume 1: Central Alaska Exploration Corporation, 203 p. (Report held by Doyon, Limited, Fairbanks, Alaska.)

  • Deposit

    Foster, H.L., Keith, T.E C., and Menzie, W.D., 1994, Geology of the Yukon-Tanana area of East-Central Alaska: in Plafker, G. and Berg, H.C., eds., The geology of North America, vol. G-1, The geology of Alaska: Geological Society of America, p. 205-240.

  • Deposit

    Doyon, Limited, 1998, Veta Prospects 1997 Volume 1: Fairbanks, Alaska, Doyon, Limited., unpublished report 98-10, 256 p. (Report held by Doyon, Limited, Fairbanks, Alaska.)

Comments on the references

  • Primary Reference = Doyon Ltd., 1998

General comments

Subject category Comment text
Deposit Model Name = Epithermal Au/Ag/W, distal to porphyry? (Doyon Ltd., 1998)
Deposit Other Comments = This property lies within Doyon Ltd. selected lands. For more information, contact Doyon Ltd.

Reporter information

Type Date Name Affiliation Comment
Reporter 13-APR-99 Cameron, C.E. Alaska Division of Geological and Geophysical Surveys

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.