The Company acquired the Porter Canyon claims by staking in 2011. Porter Canyon comprises 201 unpatented claims located in Lander County, Nevada that cover the projected north-eastern terminus of the Eastgate volcanic trough under pediment cover outboard of the Quito Mine. Quito is a Carlin-type deposit hosted in lower-plate silty limestones from which 175,000 ounces of gold was produced between 1986 and 1989.
Although the bedrock at Porter Canyon is largely covered by overburden, the geology at the base of the Toiyabe Range that projects under the property is dominated by an open shallowly plunging, north-westerly trending, breached, anticline which is cored by Roberts Mountains Formation and capped at least in part by Upper-plate lithologies. The northern limb of the anticline shows extensive solution collapse with intermittent ocurrences of auriferous and argentiferous jasperoid over a strike length of 2,600 metres. This zone is coincident with a gold bearing float train on its western end. The north-west trending anticline is projected to intersect a set of northerly trending structures which likely form the western edge of the Quito Lower-plate Window, 1,400 metres outboard of the base of the Toiyabe Range. This structural linkage also coincides with an inferred horst block as indicated by detailed gravity surveys. Management believes the geologic architecture at Porter Canyon provides an optimal structural trap for a significant Carlin-style deposit.
Subsequent to staking the Porter Canyon claims, the Company executed gravity surveys which are interpreted to show several horsted blocks under a shallow westerly sloping pediment, west of the base of the Toiyabe Range. Initial drill targets consist of the intersection of a set of northwest trending structures which host auriferous jasperoids with antimony mineralization in the range and a set of north trending cut-off structures related to a major crustal feature referred to as the Western Nevada Rift. These intersections appear to be coincident with the structural edges of the aforementioned horst blocks. Subsequent to executing the gravity surveys over the property, the Company commissioned a CSAMT geophysical survey. Results of this work suggest the existence of a buried horst block located approximately 1.5 kilometres (1 mile) outboard of the rangefront. A series of south-east trending structures that bracket the target project directly back to the past-producing Quito Mine. A number of auriferous and argentiferous jasperoids, including those in the vicinity of the former Antimony King Mine, are located within this structural zone.
In 2011, the Company announced results from 980 metres of a proposed 1,500 metre reverse circulation drilling program. Holes PCT-11-01 and PCT-11-02, drilled to depths of 451 metres and 528 metres respectively, were lost in alluvium prior to encountering bedrock. The holes are located approximately 1 kilometre apart in the north-south direction with PCT-11-01 being the northernmost. The bottom 40 metres (130 feet) of colluvium in PCT-11-01 exhibits significant enrichment in Carlin-type pathfinder elements, arsenic and antimony, as well as substantially elevated gold values. This is in contrast to PCT-11-02 which shows erratic anomalous values in gold (up to 225 ppb) but no pathfinders. The 35 metre section in PCT-11-01 from 410 metres to 445 metres (110 feet) averaged 61 ppb Au with the two highest 1.5 metre (5 feet) samples returning 174 ppb Au and 83 ppb Au. Corresponding average arsenic and antimony values are 100 ppm As and 30 ppm Sb (up to 44 ppm Sb) over the same interval. In June 2013, additional samples of colluvium were retrieved. These samples make up the bulk of the drill record for an additional 330 metres of the hole. Assays show values that are consistently elevated in gold (to 162 ppb), arsenic (to 221 ppm) and antimony (to 202 ppm).
Subsequent follow-up surface prospecting in the colluvium between the drill hole and the rangefront returned numerous boulders of mineralized Upper-plate and Lower-plate rocks assaying up to 3.7 g/t Au. Further investigation did in fact find a mineralized jasperoid outcrop, which assayed 54.3 ppm silver and 0.4% antimony, in the immediate vicinity of the auriferous float. Drill hole PCT-11-01 is located on the projected western edge of the Quito Lower-plate window, 1.5 kilometres outboard of the Toiyabe Mountain Range at the western extension of a series of north-west trending structures that bracket the past producing Quito gold mine (176,000 ounces of gold), four kilometres to the south east and the former Antimony King Mine, 3 kilometres to the south east.
Given the level of gold values in alluvium immediately above buried major known Carlin-type gold deposits in Nevada, management considers these results to be evidence of mineralized material shedding from a nearby bedrock source and provides impetus for follow-up drilling. The Company is currently permitting 20 drill holes to evaluate the area upslope from drill hole PCT-11-01 to the jasperoid, with plans to commence drilling in early 2014. The biological and archeological surveys necessary for the permitting process have been completed and submitted. Subsequent to the quarter, the archeological survey was completed and the report is being prepared.
PC1 - PC9 (2012) & PC24 - PC32 (2013)
|Jasperoid in place;
Highly anomalous Hg (1940 ppb)