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Talapoosa

The Talapoosa project (“Talapoosa”) is a low-sulfidation gold-silver deposit in the Walker Lane gold trend of western Nevada, approximately 45 kilometers east of Reno. The Talapoosa land package covers approximately 14,870 acres.

Talapossa Location Map

Since 1977, eight mining companies have carried out exploration and development with 564 drill holes totaling 71,000 meters along with extensive metallurgical test work and environmental studies. In the mid 1990’s, Miramar Mining Corporation cited a historic (pre NI-43-101) measured and indicated resource of 42.7 million tons containing 1.06 million ounces of gold and 14.5 million ounces of silver. Miramar permitted and was granted approval to mine Talapoosa. Due to prevailing low gold prices, Miramar did not proceed with the construction of a mine.

Talapoosa is a volcanic-related, quartz-adularia, low-sulfidation, epithermal gold-silver system. The mineralized area at Talapoosa is approximately 2,200 feet long, up to 1000 feet wide and 500 feet thick down dip. Gold and silver mineralization occurs as quartz-chalcedony veins, hydrothermal breccias surrounded by margins of stockwork veining. The upper 70 meters is predominately oxidized. The deposit is faulted by post-mineral dip slip movement along high angle faults into the outcropping Main Zone and down faulted Bear Creek Zone to the south.

Approximately 50,000 metres of historic drill core, stored in the Reno office, was re-logged by Gunpoint. In 2011, Gunpoint drilled 7,000 meters comprising seven PQ diamond core holes located along two drill sections. The drill fences, spaced approximately 250 meters apart, provided two representative sections through the Bear Creek zone. The re-logging together with Gunpoint’s drill results led to the re-interpretation of the controls on mineralization at Talapoosa. Historically, the mineralization was modeled as a gently south dipping body of stockwork and disseminated mineralization, roughly coincident with the distribution of the welded tuff horizon. The previous models did not consider post-mineral faulting. Gunpoint interpreted the mineralization as being hosted by a series of steeply south dipping veins and hydrothermal breccias, hosted within a competent welded tuff unit approximately 200 meters thick.

Talapoosa Figure 1

The PQ drill core program was designed to define the vein orientations and provide core for metallurgical testwork.  All mineralized material (maximum interval of 5 feet), was split and the half-core was analyzed using Metallic Screen Fire Assay techniques side by side with corresponding 50 gram Fire Assays to determine the influence of nugget effect on overall grade. The comparison of the standard fire assay versus Metallic Screen Fire Assays for individual intervals, demonstrates that standard fire assays, the technique used in nearly all historic drill core analysis, is subject to a nugget effect which appears to result in the potential average grade being understated by as much as 10% to 20%.

In 2013, Gunpoint contracted Tetra Tech to complete a revised NI 43-101 resource estimate. The updated resource estimate added approximately 380,000 ounces of gold and 5.4 million ounces of silver to the previous NI 43-101 resource completed in September, 2010. The increase in both grade and ounces is the direct result of Gunpoint’s re-interpretation of the controls on mineralization. Historic drilling northwest and southeast of the Talapoosa deposit intercepted similar grades of mineralization and were not included in NI 43-101 resource estimate.

Talapoosa Resource Summary

Cutoff
AU g/t
Ore Type Category Tonnes Grade
Au g/t
Grade
Ag g/t
Contained
Gold
(ounces)
Contained
Silver
0.445 Oxide Measured 3,126,050 1.29 18.96 117,253 1,728,323
0.445 Sulphide Measured 14,044,820 1.22 16.50 501,215 6,760,763
0.445 Oxide Indicated 1,412,000 1.10 14.25 45,328 586,999
0.445 Sulphide Indicated 12,681,600 0.94 12.36 349,005 4,573,274
0.445 Oxide Total M&I 4,538,050 1.23 17.49 162,581 2,315,321
0.445 Sulphide Total M&I 26,726,420 1.09 14.54 850,220 11,334,037
0.445 Oxide     +
Sulphide 
Total M&I 31,264,470 1.11 14.97 1,012,802 13,649,358
0.445 Oxide     +
Sulphide
Inferred 11,198,000 0.72 6.65 233,532 2,172,766

Tetra Tech, 2013.

During 2015-2018, Timberline Resources had an option to acquire Talapoosa. In 2015, Timberline contracted WSP Canada to provide a Preliminary Economic Assessment study. Assuming gold at US$1,150 and silver at $16.00 per ounce, the PEA indicated an after-tax net present value of US$136 million (5% discount rate) and an IRR of 38.8%. The capital payback was 3.1 years.

Preliminary Economic Assessment

Mine Operation Open pit, heap leach
Mine Life 11 years
Annual Gold Production 55,000 oz
Annual Silver Production 679,000 oz
All-In Sustaining Cost $599/oz
Initial Capital Cost $51 million
Capital Payback 3.1 years
After-Tax IRR 38.8%
After-Tax NPV (5%) $136 million

WSP Canada, 2015

Regionally, Gunpoint completed a broad reconnaissance scaled mapping and geochemical sampling program over the 14,870 acre project area. The exploration program led to the recognition of extensive high-level manifestations of epithermal mineralization, including sinters, siliceous sediments and hydrothermal vent breccias, along a 7 kilometer length of the Appaloosa structure. Appaloosa is a north-northwest trending fault zone, parallel to the Talapoosa fault zone located two kilometers south. Sampling outcropping vein fragments and cross-cutting veinlets from likely deeper breccia eruptions assayed up to 1.0 g/t gold.

Talapoosa Figure 1

A regional scale ground magnetic geophysical survey was undertaken by Gunpoint covering both Talapoosa and Appaloosa structures. Using the IP and magnetics, a 3-D regional geological model delineated a number of large porphyritic bodies covered by the shallow tuffaceous sediments.