Carlin Vanadium

Carlin Vanadium Property Description and Ownership

The Carlin Vanadium Property consists of 72 unpatented mining claims covering 1,140 acres located in North-Central Nevada in Elko County, seven air miles south of Carlin. The property has exceptional infrastructural advantages. The property is road accessible from Carlin and Elko. Carlin is a major rail hub to both coasts. Power is <3 miles from the property. The property was explored and drilled by Union Carbide Corporation (UCC) in the late 1960’s resulting in a defined vanadium resource.

The claims are owned by Golden Predator US Holding Corp. (GPUS). America’s Gold Exploration Inc. (AGEI), holds an option to acquire 100% of the Carlin Vanadium Project from GPUS which has now been assigned to Cornerstone through a definitive Assignment Agreement with AGEI. The terms for Cornerstone to earn 100% are present in its News Release of November 9, 2017.


Geology and Mineralization

The Carlin Vanadium Property is located on the western flank of the Piñon Range, a block faulted horst of the basin and range tectonic province. The local lithologies are predominantly Paleozoic age, western assemblage, siliceous rocks transported above the Roberts Mountain Thrust. The vanadium mineralized zone is a stratigraphic sub-unit within the Woodruff Formation shale hosting elevated concentrations of vanadium in the form of vanadium pentoxide (V2O5). Drilling indicates a vanadium zone or deposit approximately 55m (180 feet) thick striking north-south over 1,860m (6,100ft) in length and dipping 5°-30° west averaging 760m (2,500ft) of down dip extent from surface. The mineralized unit is locally exposed on surface where it cuts topography but mostly is found at shallow depths, commonly between 15-60m (50-200 ft) below surface.

The vanadium-rich unit has grades commonly between 0.3% and 0.8% V2O5 but can reach as high as 3.1% V2O5. Very limited sampling of the vanadium-rich unit has also shown elevations of silver, zinc and cobalt.


All of the exploration and development on the project has been completed by previous owners. UCC began exploration in September of 1966 and continuing into the next two years. The work included; surface mapping, trenching and sampling was conducted accompanied by auger and rotary drilling. At least, 152 rotary drillholes were completed by the end of 1967. This figure shows the location and density of the vertical drilling by UCC. Drill hole centers are approximately 60m apart defining the vanadium deposit.


2010 Historic Resource Estimation

In 2010 an NI 43-101 compliant resource estimation was made on the Carlin Vanadium deposit by Dr. Bart Stryhas of SRK for Energy Metal Corp. (EMC). The technical steps and components of the study can be found in Cornerstone’s Technical Report, History Section.

The results of the 2010 resource estimation provided a CIM classified Inferred Mineral Resource as shown in Table 1-1 below at a Cut-off grade CoG of 0.3% V2O5. The quality of the historical data was good and the Mineral Resource was classified as inferred mainly due to the fact that the rotary drilling has not been verified by a modern program. This figure shows the Plan View of the 2010 Historic Resource Estimate Block Model.


Table 1‑1: 2010 Historic Carlin Vanadium Mineral Resource

Resource Category

% CoG

Total (Mst)

V2O5 Grade (%)

Contained V2O5 (Mlb)






The 0.3% V2O5 CoG was chosen in 2010 for resource reporting based on the reasonable potential for economic extraction under a conceptual open pit mining and milling scenario. The CoG was calculated using US$2.30/st mining cost, US$35/st milling cost, US$0.50/st admin cost, 65% recovery, 95% selling pay-for, 1% freight charge, 0% royalty and a US$10.46/lb V2O5 value. The results reported in the historic resource statement are rounded to reflect the approximation of grade and quantity, which can be achieved at this level of resource estimation. Table 1-2 provides the historic resource at different cut-off grades.

Table 1-2: 2010 Historic Resource Estimate Sensitivity Table

% CoG

Total (Mst)

V2O5 Grade (%)

Contained V2O5 (Mlb)





























Source: SRK, 2010

The 2010 mineral resource estimate has been declared a historic resource by the QP of Cornerstone’s Technical Report and will remain a historic resource until such time as Cornerstone has it updated with current metal pricing and costs. The Company is not treating the historic mineral resource estimate as current and as such they should not be relied upon.

This figure is an example cross-section view of 2010 historic mineral resource block model, demonstrating the near surface nature and shallow dip of the deposit which lends itself to open pit mining methods.



In the Technical Report a two-stage development plan is recommended. The first stage, estimated to cost US$500,000 (~CAN$625,000), should include 4,320 feet (1,317m) of diamond core drilling in 18 holes on wide spacing (US$300,000), and some metallurgical testing (US$200,000). The drilling will serve to confirm the mineralized intervals and grades reported from the historic rotary drilling and to collect fresh samples for metallurgical testing.

Technical disclosure has been reviewed and approved by Paul Cowley, P.Geo., a Qualified Person as defined by National Instrument 43-101, and President and CEO of the Company. For more details refer to the Technical Report on the Property entitled NI 43-101 Technical Report on the Carlin Vanadium Project, Carlin, Nevada  dated October 26, 2017 authored by Bart Stryhas, PhD, CPG and John Cooper, P.E. of SRK Consulting (US) Inc. (“SRK”) filed on SEDAR November 8, 2017.

West Jerome

The West Jerome property is focused in the copper-rich district of Arizona, near the town of Jerome, central Arizona.



West Jerome, Arizona

The West Jerome property consists of approximately five square kilometers of claims on the west side of Freeport McMoran patented lands. The property - a Volcanogenic Sulfide camp - is a high-grade, massive sulfide target located 2.4 km south of the past-producing United Verde Mine (33 million tons of 4.36% Cu, 1.53 opt Ag and 0.042 opt Au; 2.9 Billion lbs of copper).  The Company may not obtain similar results from its West Jerome property.

Location Map West Jerome April 2015   west jerome2

The West Jerome Property has excellent geological and geophysical support for a large Volcanogenic massive sulfide target. The property has two favourable stratigraphic horizons traced from the United Verde mine onto West Jerome. Both surface exposures and limited drilling have identified strong chloritic alteration typical on a VMS feeder pipe on West Jerome. Furthermore, geophysical surveys (electromagnetic) on West Jerome have identified 2 strong anomalies (red on the figure below) coincident with the favourable stratigraphic horizons and chlorite alteration (feeder pipe).  The pink dots and legs on the figure below are the planned drilling to test these coincident anomalies.

west jerome3

Lowell Copper conducted 2 gravity surveys by Zonge International Inc. (“Zonge”) over the Project, which generated two anomalies, one being open-ended. Zonge recommended further work to better define the open-ended anomaly, however due to market conditions and other priorities, Lowell Copper has preferred not to proceed further with the Project. As a result, Cornerstone retains a 100% interest in the Project, now supported by gravity anomalies.

This website includes certain "forward-looking statements" such as estimates and statements that describe Cornerstone Metal Inc.’s property, future plans, objectives or goals. All statements in this website, other than statements of historical facts, that address future production, resource potential, exploration and development activities and events or developments that the Company expects, are forward-looking statements. Although management believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such forward-looking statements involve known and unknown risks, uncertainties, and other factors that may cause actual results, performance or developments to differ materially from those in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include, but are not limited to, market prices, environmental conditions, judicial, regulatory and political developments, exploration and development successes, continued availability of capital and financing, and general economic, market or business conditions.

All technical disclosure on this website has been prepared under the supervision of Paul Cowley, P.Geo., President and CEO of the Company, a qualified person consistent with NI 43-101.