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  3. Alaska Resource Data File (ARDF)

Top Dollar

Prospect, Active

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Commodities and mineralogy

Main commodities Au
Ore minerals arsenopyrite; gold
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale CI
Quadrangle map, 1:63,360-scale B-2
Latitude 65.4433
Longitude -144.7586
Nearby scientific data Find additional scientific data near this location
Location and accuracy The location is the approximate center of 20 mining claims about 5 miles southwest of Circle Hot Springs and about 0.6 mile southeast of the center of section 12, T. 7 N., R. 14 E. The location is generally accurate and probably well within the claim boundaries.

Geologic setting

Geologic description

Note: This prospect is probably within a large block of ground that is currently (2008) being explored by Millrock Resources Inc. (2008). The geology and past exploration within the block is discussed in the ARDF site for the '88 group' (CI001).
The Top Dollar claims are in the Paleozoic metamorphic rocks intruded by Cretaceous to Tertiary granitic rocks . The region is transected by regional-scale, northeast-trending shear zones and northeast-trending mafic dikes.
Gold mineralization occurs as gold-arsenopyrite-quartz veins and stockwork zones in massive, hornfelsed, micaceous quartzite and schist. The mineralization is near the intrusive contact of the Cretaceous 'Two Bit' granite pluton; possibly as mineralized pendants above the pluton. Rock, samples contain up to 14 parts per million gold, highly anomalous arsenic and antimony, and variably anomalous bismuth and base metals (D.D. Adams, written communication, 1998).
Geologic map unit (-144.761042424222, 65.4429374164441)
Mineral deposit model Gold-arsenopyrite veins in hornfels and schist.
Age of mineralization Possibly genetically related to the nearby Cretaceous granitic pluton.
Alteration of deposit Silicification, quartz-sericite, chlorite, and iron-oxides.

Production and reserves

Workings or exploration Only surface sampling.
Indication of production None

References

References

Millrock Resources Inc., 2008. Ketchem: http://www.millrockresources.com/index.php/projects/ketchem/ (as of May 25, 2008).
Reporters C.J. Freeman, J.R. Guidetti Schaefer, A.S. Clements (Avalon Development Corporation); D.J. Grybeck (Port Ludlow, WA)
Last report date 6/5/2008