Goose Creek

Prospect, Active

Commodities and mineralogy

Main commodities Au
Other commodities Ag; As; Bi; Pb; Sb; Zn
Ore minerals arsenopyrite; pyrite; sphalerite; stibnite; tetrahedrite
Gangue minerals sericite

Geographic location

Quadrangle map, 1:250,000-scale LG
Quadrangle map, 1:63,360-scale A-1
Latitude 65.077
Longitude -147.36
Nearby scientific data Find additional scientific data near this location
Location and accuracy The location given is the approximate center of the Goose Creek soil anomaly; it is on an unnamed creek between Goose Creek and upper Wolf Creek in the NW1/4 section 21, T. 3 N., R. 2 E., of the Fairbanks Meridian. The location is accurate within 500 feet.

Geologic setting

Geologic description

In 1996, Freegold Recovery Inc. outlined a +5,000 foot long multi-element soil anomaly on the Goose Creek prospect (Freeman and others, 1998). The core of the grid, covering an area approximately 2,000 feet by 1,000 feet, averaged over 100 parts per billion (ppb) gold, three times the mean gold value over the project area. This anomaly trends N 80 W and was extended to a length of 10,000+ feet in 1997. The anomaly is located in lower plate rocks of the Fairbanks Schist and appears to have secondary anomalies associated with district scale northeast trending structures similar to those on the Cleary Hill (ARDF no. LG119), Dolphin (ARDF no. LG112) and Wolf Creek (ARDF no. LG138) prospects. Mineralization is characterized as intrusion and schist-hosted, gold bearing stockwork veins, shears and disseminations. Initial drilling in late 1997 consisted of 5,038 feet of reverse circulation drilling in 11 holes. Preliminary assay results from one hole returned intercepts averaging up to 0.118 ounce of gold per ton over 160 feet in highly sericitized chlorite schist cut by 10 to 20 percent white quartz veins. Anomalous gold is associated with anomalous arsenic, antimony, lead, silver, and zinc. Pyrite is relatively abundant in the sericitic alteration envelope but does not appear to be correlative with gold values.
In 1998, 10 reverse circulation holes totaling 5,017 feet were drilled in the Goose Creek prospect to determine the extent and geometry of the higher grade intercepts encountered in the 1997 drill program. Results indicate that mineralization is controlled by an 85 degree south dipping structure. The gold-bearing alteration envelope around this structure is restricted in size indicating limited potential for bulk tonnage mineralization in this area (Freeman and others, 1998).
Geologic map unit (-147.362449160543, 65.0765781698221)
Mineral deposit model Polymetallic veins (Cox and Singer, 1986; model 22c)
Mineral deposit model number 22c
Age of mineralization Probably about 90 Ma based on analogy with similar gold deposits nearby (Freeman and others, 1998).
Alteration of deposit Sericitic alteration (Freeman and others, 1998).

Production and reserves

Workings or exploration
Soil sampling in 1996 lead to the discovery of a multi-element soil anomaly more than 5,000 feet long. Initial drilling in late 1997 consisted of 5,038 feet of reverse circulation drilling in 11 holes. In 1998, 10 reverse circulation holes totaling 5,017 feet were drilled (Freeman and others, 1998).
In 2011, an induced polarity (IP) and resistivity survey was completed by Freegold Ventures Ltd., indicating potential areas of mineralization. Freegold executed soil sampling between 2011 and 2012 (Abrams and Giroux, 2013).
Indication of production None
Reserve estimates None.
Production notes None.



Reporters C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation); V.C. Zinno (Alaska Earth Sciences, Inc.)
Last report date 12/23/2014