The Suwar nickel, copper, cobalt, platinum project is located in the southern part of a layered basic igneous complex some 32 km in length and 8 km in width. The complex is dominated by gabbroic rocks and is thought to be of mid Proterozoic age. The city of Sana’a lies some 50 km to the east-southeast.
Mineralization at surface occurs as a discontinuous series of gossan outcrops, often containing malachite, which occur along a northeast trending zone nearly 3 km long. At least 1.1 km of this zone exhibits an UTEM response.
It has been determined from earlier drilling results that the mineralized zones are dominated by pyrrhotite with nickel being contained mainly in pyrrhotite-pentlandite intergrowths and copper within chalcopyrite. The sulphides occur both as disseminations and as massive bands. While only traces of platinum group metals have been found, only a small part of the mineralized complex has been tested and there remains a possibility for discovery of significant PGE values. There is insufficient drilling to calculate a resource but, based on the drill results and geology, the 2.7 km long discontinuously mineralized zone is up to 140 metres wide and up to 30 metres thick. There is adequate room within this zone to contain a world-class ore body. The mineralized zone is open in all directions.
A seventeen hole drill program was started in August 2007 to provide additional detail at Suwar Hill and also to define mineralization along the previously untested extension of the Suwar massive sulphides. In November 2008, Vale optioned the Suwar project from Cantex. In the first year, work conducted on the project included the collection of 1,894 soil samples, detailed geological mapping and acquisition of a satellite image. Ground geophysical surveys included 32 line kilometers of ground magnetics, 15 kilometers of ground gravity and a ground induced polarization (IP) survey covering a 2.5 km by 2.5 km area.
Interpretation of the northern portion of the IP survey discovered two significant IP anomalies. The eastern anomaly, which extends from the known mineralization at Suwar Hill, is 800 meters long and 130 to 250 meters wide. The western anomaly is 600 meters long and 150 to 300 meters wide. Drilling commenced June 22, 2009 with the first hole designed to provide a platform for a down hole electromagnetic geophysical survey below Suwar Hill. Subsequent holes were planned to test the eastern IP anomaly. Five holes were drilled totalling 2,125 meters. Only one hole intersected significant mineralization and it appears that the IP anomalies do not reflect sulphide mineralization. However, drilling with Cantex’s man-portable core rig is currently still ongoing.
In the summer of 2010, a 1,624 line kilometer helicopter-borne geophysical survey commenced over the Suwar and Wadi Qutabah project areas. The survey, which collected electromagnetic, magnetic and radiometric data, was designed to test for nickel – copper – cobalt bearing massive sulphide mineralization similar to what has been previously discovered at Suwar Hill. Results of the survey identified three new conductive anomalies potentially reflecting massive sulfide mineralization on the Suwar property in addition to the previously identified zone of copper-nickel-cobalt massive sulfides. At Wadi Qutabah three new conductive zones have been identified adjacent to the known massive sulfide mineralization.
In 2011, a drill program planned to test the three new anomalies at Suwar failed to intersect any significant mineralization. In December 2011, the Company received notification that Vale decided not to pursue the Suwar Option and accordingly terminated the letter agreement.
In June 2013, the Company elected to relinquish the exploration license.The significant work conducted by Cantex, along with joint venture partners Falconbridge Ltd and Vale International SA, has not shown Suwar to contain sufficient tonnage to be mined profitably.