Drumstick

Prospect, Active

Commodities and mineralogy

Main commodities Ag; Au; Cu; Pb; Zn
Ore minerals chalcopyrite; galena; sphalerite
Gangue minerals calcite

Geographic location

Quadrangle map, 1:250,000-scale EA
Quadrangle map, 1:63,360-scale A-5
Latitude 64.1316
Longitude -143.2114
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Drumstick prospect is on the ridge about a half mile north of the mouth of Silas Pup, a short headwater tributary of My Creek. It is in about the middle of the west half of section 11, T. 27 N., R. 11 E. The location is accurate.

Geologic setting

Geologic description

Although mineralization at the Drumstick prospect was probably recognized earlier in several pits dug in conjunction with work at the nearby Eva prospect (EA099), it first cited as a separate prospect by Full Metal Minerals (2008 [40 mile]) in 2007.
The Drumstick prospect is in Paleozoic gneiss, schist, quartzite, and marble, that have been intruded by the Mount Veta syenite of Jurassic age (Foster, 1976). Other Tertiary to Mesozoic monzonite and granite plutons are about 1 mile east of the prospect, and there are felsic and mafic dikes in the area (Dashevsky and others, 1986). The granitic pluton to the east is epidotized and contains scattered altered zones near the contact (Foster and Clark, 1970).
Full Metal interprets the Drumstick prospect as an extension of the Eva prospect and like it a carbonate replacement deposit that consists of partially oxidized, coarsely crystalline sphalerite, with galena, and chalcopyrite. Three samples of the mineralization were collected from old prospect pits by Full Metal Minerals, (2008 [high grade]; 2008 [map]). Two of the samples contained 21.6 and 11.6 percent zinc, 19.1 and 8.1 percent lead, 222 and 863 grams of silver per tonne, and anomalous gold and copper. The Drumstick prospect is within a 1,100-meter-long by approximately 120-meter-wide soil anomaly marked by lead values of 100 to 7,980 parts per million. The anomaly coincides with subtle vegetation 'kill zones', similar to the one at the LWM prospect (EA 102), 22 kilometers to the northeast.
Stevens (2010) reports that 8 holes were drilled at the Drumstick prospect in 2008. Some notable intercepts are: 1) 1.4 meters that averaged 44.5 grams of silver per tonne, 2.27 percent lead, and 11.75 percent zinc; 2) 6.03 meters that averaged 3 grams of silver per tonne and 0.16 percent zinc; and 3) 1 meter that averaged 14 grams of silver per tonne, 0.39 percent lead, and 1.67 percent zinc.
Geologic map unit (-143.21368878969, 64.1312502141427)
Mineral deposit model Silver-lead-zinc carbonate replacement deposit (Cox and Singer, 1986; model 19a).
Mineral deposit model number 19a
Age of mineralization Probably Jurassic or younger based on nearby Jurassic plutons.
Alteration of deposit Not specifically noted.

Production and reserves

Workings or exploration Probably undocumented prospecting and sampling as far back as the 1980s. In 2008 being explored by Full Metal Minerals and they drilled 8 holes that year.
Indication of production None
Reserve estimates None.
Production notes None.

References

References

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).
Full Metal Minerals, 2008; 40 Mile district: http://www.fullmetalminerals.com/s/40mile.asp (as of March 4, 2008)
Full Metal Minerals, 2008, (Map showing LWC drill sites): http://www.fullmetalminerals.com/in/misc/LWM-drill.gif (as of March 4, 2008).
Full Metals Minerals, 2008, Full Metal reports high grade assay results from LWM prospect: /www.fullmetalminerals.com/s/NewsReleases.asp?ReportID=283603&_Type=News&_Title=Full-Metal-Reports-High-Grade-Assay-Results-from-LWM-Prospect-40-Mile-Prope... ( News Release, Jan 29, 2008)
Stevens, D.L., 2010, 40-Mile project, Fortymile Mining District, East-Central Alaska: Unpublished NI 43-101 report for Full Metal Zinc Ltd. and Full Metal Minerals Ltd., 177 p. (posted on www.sedar.com, April 21, 2011).
Reporters D.J. Grybeck (Contractor, USGS)
Last report date 4/1/2012