Occurrence in Alaska, United States with commodities Silver, Gold, Mercury, Lead
Warning: This record lacks important information: bibliographic references, which we consider necessary for a comprehensive report.

Geologic information

Identification information

Deposit ID 10308204
Record type Site
Current site name Firebear

Geographic coordinates

Geographic coordinates: -160.15184, 61.07732 (WGS84)
Relative position This occurrence is on a small knob at an elevation of about 700 feet in the NW1/4 sec. 5, T. 11 N., R. 61 W., of the Seward Meridian. It is about 1,500 feet northwest of a saddle having an elevation of 685 feet.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Silver Primary
Gold Primary
Mercury Primary
Lead Secondary

Mineral occurrence model information

Model code 104
USGS model code 25a
Deposit model name Hot-spring Au-Ag
Mark3 model number 45

Nearby scientific data

(1) -160.15184, 61.07732

Comments on the geologic information

  • Geologic Description = This occurrence consists of an epithermal hot spring deposit containing carbonized fossil plant fragments preserved in siliceous cap rock. Grab samples of the deposit contain as much as 0.24 ppm gold, 1.8 ppm silver, 3 ppm mercury, and 380 ppm lead. The country rocks are largely Jurassic volcanic rocks (Box and others, 1993).
  • Age = Tertiary the preservation of a surface hot spring deposit containing plant fragments suggests that they are Tertiary in age.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Aniak

Comments on the workings information

  • Workings / Exploration = No workings are present. Only reconnaissance surface geochemical sampling of this occurrence has been completed.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF RM024

Comments on the references

  • Primary Reference = This record

General comments

Subject category Comment text
Deposit Model Name = Hot spring Au-Ag? (Cox and Singer, 1986; model 25a)
Deposit Other Comments = This description is from unpublished field notes (station #92AM25) of M.L. Miller, U.S. Geological Survey, Anchorage, Alaska.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUN-01 Travis L. Hudson Applied Geology
Reporter 10-JUN-01 Madelyn A. Millholland Millholland & Associates