Little Enchilada

Prospect, Probably inactive

Commodities and mineralogy

Main commodities Cu; Mo; Pb
Other commodities Ag; Au
Ore minerals molybdenite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale EA
Quadrangle map, 1:63,360-scale A-4
Latitude 64.1895
Longitude -142.9676
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Little Enchilada prospect is about 1.3 miles southeast of Mount Veta on a ridge between two forks of Veta Creek. The coordinates are the approximate center of the prospect ,in the SW1/4 section 27, T. 8 S., R. 24 E., of the Fairbanks Meridian. The location is accurate. The Little Enchilada prospect is located within Doyon, Ltd. selected or conveyed land.

Geologic setting

Geologic description

Bedrock in the Mount Veta area consists of granitic plutons of Jurassic to Cretaceous age that include quartz monzonite, quartz latite, and quartz porphyry (Laybourn and Doyon, Ltd., 1979). In the vicinity of the Little Enchilada prospect, biotite-quartz monzonite with well-developed sericitic/phyllic alteration is found in a saddle at an elevation of 4,100 feet. Alteration appears to diminish up the ridge to the north but continues down the ridge to the south for at least one-half mile. Quartz-molybdenite veins cut the altered quartz monzonite. Several other prospects are associated with the Mt. Veta intrusive complex, including East Eva (EA098), Eva Creek (EA099), Oscar (EA096), Oscar West (EA097), unnamed (north of Fish Creek) (EA062), Molly Creek (EA100), Little Whiteman Creek (EA060), and Mitchell (EA101).
At the Little Enchilada prospect, a soil grid on the east side of the ridge exhibits coincident zones of molybdenum and lead enrichment over an area about 488 meters by 610 meters in size that is open in three directions (U.S. Bureau of Mines, 1995]). Rocks collected by the U.S. Bureau of Mines (1995) contain as much as 3,087 ppm molybdenum, 59 ppm copper, and 189 ppm zinc. Rocks collected by Doyon Ltd. contain as much as 1,640 ppm copper, 100 ppm silver, 450 ppm molybdenum, 1,100 ppm lead, and 585 ppb gold. Anomalous copper, silver, and gold are present in altered quartz monzonite as much as 915 meters away from the area of molybdenum mineralization (Laybourn and Doyon, Ltd., 1979). Laybourn and Doyon, Ltd. (1979) suggested that the low to moderate geochemical values and the general nature of the veins and alteration indicate that only the top of the mineralization is exposed. A ground-based survey indicates the IP/resistivity response is slightly stronger on the west side of the ridge than on the east side and that a northeast-trending low-resistivity (fault?) zone crosses the saddle (Dashevsky and others, 1986).
Stream-sediment reconnaissance and follow-up prospecting were conducted in the Little Enchilada prospect area by WGM Inc. in 1977, and reconnaissance mapping and a soil survey were conducted in 1979 (Dashevsky and others, 1986). Arctic Resources Inc. extended the soil sampling grid in 1981, and three lines of IP/resistivity were run by Doyon, Ltd. in 1982. In 1989, Central Alaska Exploration Corp. conducted geologic mapping, and rock and soil sampling in the Little Enchilada prospect area (WGM Inc., 1998 [DLR 98-10]).
Geologic map unit (-142.96988165589, 64.1891536229826)
Mineral deposit model Porphyry Mo (Cox and Singer, 1986; model 21b).
Mineral deposit model number 21b
Age of mineralization The mineralization is probably related to the Jurassic or Cretaceous plutons in which it occurs.
Alteration of deposit Well-developed sericitic/phyllic alteration in biotite quartz monzonite.

Production and reserves

Workings or exploration Stream-sediment reconnaissance and follow-up prospecting were conducted in the Little Enchilada prospect area by WGM Inc. in 1977, and reconnaissance mapping and a soil survey were conducted in 1979 (Dashevsky and others, 1986). Arctic Resources Inc. extended the soil sampling grid in 1981, and three lines of IP/resistivity were run by Doyon Ltd. in 1982. In 1989, Central Alaska Exploration Corp. conducted geologic mapping and rock and soil sampling in the Little Enchilada prospect area (WGM Inc., 1998 [DLR 98-10]).
Indication of production None

Additional comments

The Little Enchilada prospect is located within Doyon, Ltd. selected or conveyed land. For more information contact Doyon, Ltd., Fairbanks, Alaska.

References

References

Caithness Alaska Mining Co., 1990, 1989 annual report, Alaska field operations, appendix 7.2.1A, Doyon reconnaissance geochemical results, part A, volume 2 of 14: Doyon, Ltd. Report 90-06b, 149 p. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Caithness Alaska Mining Co., 1990, 1989 annual report, Alaska field operations, appendix 7.2.1A, Doyon reconnaissance geochemical results, part B, volume 3 of 14: Doyon, Ltd. Report 90-06c, 145 p. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Caithness Alaska Mining Co., 1990, 1989 annual report, Alaska field operations, appendix 7.2.1C, Doyon reconnaissance geochemical results, part C, appendix 7.2.2, rock sample descriptions and appendix 7.2.3, geochemical results, sample locations and descriptions - diskettes, volume 4of 14: Doyon, Ltd. Report 90-06d, 181 p. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Caithness Alaska Mining Co., 1990, 1989 annual report, Alaska field operations, volume 1 of 14: Doyon, Ltd. Report 90-06a, 251 p. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Carter, C.H., 1981, Doyon exploration program, Blocks 4, 5, 8, and 22: Doyon, Ltd. Report 81-27. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Dashevsky, S.S., 1983, Doyon exploration program, Block 8 - Fortymile, 1982: Doyon, Ltd. Report 83-01. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Dashevsky, S.S., and Nicol, D.L., 1985, Geologic field examinations in Doyon, Ltd. Regional Selection Blocks 1,6, 8, 9, 10, 12, 13, 18, 19, 20, 21, and Hughs and MTNT Village Lands, 1984: Doyon, Ltd. Report 85-07. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Dashevsky, S.S., Nicol, D.L., and Bond, J., 1986, Mines, prospects, and geochemical anomalies on Doyon Limited regional overselection lands, Alaska, Blocks 1-8: Doyon, Ltd. Report 86-01a, 300 p. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Laybourn, D. and Doyon, Ltd., 1979, 1979 annual progress report, Little Enchilada prospect: Doyon, Ltd. Report 79-32. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Magathan, E., 1979, The geology of east-central and west-central Yukon: A report prepared for the Louisiana Land and Exploration Company, Denver, Colorado: Doyon, Ltd. Report 79-39. (Report held by Doyon, Ltd., Fairbanks, Alaska).
WGM Inc., 1998, Veta property, 1997 annual report, volume 1: Doyon, Ltd. Report 98-10, 227 p. (Report held by Doyon, Ltd., Fairbanks, Alaska).
Reporters M.B. Werdon; R.L. Flynn
Last report date 5/1/2002