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Ready Bullion

Prospect in Alaska, United States with commodity Gold
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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 10308572
Record type Site
Current site name Ready Bullion

Geographic coordinates

Geographic coordinates: -148.05295, 64.85966 (WGS84)
Relative position This prospect is located between Ready Bullion Creek and Moose Gulch in the NE1/4 sec. 1, T. 1 S., R. 3 W., Fairbanks Meridian; it is about one mile northwest of the town of Ester.

Site location context

Political divisions (FIPS codes)

Fairbanks North Star(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fairbanks D-3(quadrangle 1:63,360 scale)

Fairbanks N(quadrangle 1:100,000 scale)

Fairbanks C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

LG(Federal land areas administered by LG)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Alteration

  • Pervasive oxidation, attributed to weathering, is prevalent to depths of as much as approximately 50 to 75 meters (Rogers and others, 1998). Fine-grained, botryoidal, chalcedonic quartz coated with magnesium oxide is associated with the oxidation. The rocks have been subjected to pervasive sericitic and silicic, hydrothermal alteration, and contain silicic and stockwork quartz-sericite-sulfide veins (Rogers and others, 1998).

Nearby scientific data

(1) -148.05295, 64.85966
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Ready Bullion prospect is in the Muskox sequence that consists of metamorphosed andesite, basalt, rhyolite and sandstone that have been subjected to amphibolite-grade metamorphism and have retrograded to greenschist facies (Newberry and others, 1996). In 1998, drilling by Placer Dome Exploration, Inc., determined that the Muskox sequence becomes more mafic, phyllitic, fine-grained, and calcareous at depth (Rogers and others, 1998). The Muskox sequence is bounded to the northwest and southeast by northeast-trending high-angle faults. It has been down-dropped and brought into contact with Fairbanks Schist. The Muskox sequence is itself cut by numerous northeast-trending, high-angle faults. Drilling by Placer Dome Exploration, Inc., determined that these high-angle structures dip steeply to the southeast and northwest. Primary exploration targets have been these northeast-trending, high-angle faults that contain gold-bearing, altered and mineralized gouge (Rogers and others, 1998). Pervasive oxidation, attributed to weathering is prevalent to depths of as much as approximately 50 to 75 meters (Rogers and others, 1998). Fine-grained, botryoidal, chalcedonic quartz coated with magnesium oxide is associated with the oxidation. The rocks have been subjected to pervasive sericitic and silicic, hydrothermal alteration, and silicic and stockwork quartz-sericite-sulfide veins (Rogers and others, 1998). From 1990 to 1992, American Copper and Nickel Co. collected soil samples that contained gold values in excess of 500 ppb gold from the prospect (Rogers and others, 1998). Placer Dome conducted trench sampling in 1998 to follow up targets identified by Silverado Gold Mines, Ltd. Silverado's trenching program totalled 7,600 feet of channel samples that had a weighted average grade of 0.041 ounce per ton gold (Rogers and others, 1998). Placer Dome's work found that ore-grade material (greater than 1 ppm gold) was restricted to fault zones containing sericitically altered and silicified gouge with arsenopyrite mineralization. The surrounding host rock typically contained less than 100 ppb gold (Rogers and others, 1998).

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the workings information

  • Workings / Exploration = From 1990 to 1992, American Copper and Nickel Co. (ACNC) collected soil samples from the prospect (Rogers and others, 1998). Airborne geophysical surveys were conducted by the State of Alaska and a more detailed ground VLF survey was performed by ACNC. Placer Dome Exploration, Inc., conducted trench sampling and drilling in 1998. Prior to Placer Dome's work, Silverado Gold Mines, Ltd. also conducted trenching and drilling.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Rogers and others, 1998

General comments

Subject category Comment text
Deposit Model Name = Schist-hosted gold-quartz veins associated with northeast-trending high-angle faults.

Reporter information

Type Date Name Affiliation Comment
Reporter 31-JUL-2001 J.R. Guidetti Schaefer and C.J. Freeman Avalon Development Corporation

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.