Molybdenum – Nithi Mountain, British Columbia
The Nithi Mountain Molybdenum property is located in central British Columbia 8 km south of the Town of Fraser Lake. Fraser Lake is along the Yellowhead Highway and the main CN rail line leading to the port of Prince Rupert. The property is readily accessible by well maintained logging roads and various exploration trails. A large transmission power line passes a few kilometers to the north of the claims. The Endako Molybdenum Mine is currently under care & maintenance and lies about 18 km west-northwest of the property. The Endako Mine processed up to 50,000 tonnes per day of 0.05% Molybdenite. This head grade was progressively lowered in time as lower grades of ore became profitable. It was in production from 1965 to 2015, and currently has a fully permitted facility with a new mill and roaster. The mine is currently under care and maintenance.
Mineralization on Nithi Mountain is classified as a low fluorine, porphyry molybdenum type. The mineralization is hosted by the Nithi and Casey intrusive phases of the Francois Lake intrusive suite. The geology, style of mineralization, nature of associated alteration, all bear a strong resemblance to the adjacent Endako Mine.
Previous to Leeward’s work, exploration included soil sampling, rock trench sampling, IP surveying, and both diamond and percussion drilling. Leeward acquired the property in 2003. Exploration by Leeward began in the fall of 2004 and extended to 2011. Work included geological mapping, rock sampling, and airborne geophysical surveys (magnetic, radiometric, resistivity and Lidar) of the property and oriented core drilling programs. From 2005 to 2011 a total of 53,385.17 m of drilling was completed outlining most of the orebody except for one last zone yet to be drilled. A baseline environmental study was completed and a bulk sample was sent for metallurgical testing (report on website). In addition, a comprehensive GIS database was assembled. This included the compilation of over 2,500 soil sample results, rock sample results, geology, and drill hole data. Overall grade and tonnages are found in the appended reports. These reports are available for download on this website.
Further drilling utilizing improved oriented core technology is recommended to concentrate on geophysical outlined zones at depth within the Nithi Quartz Monzonite as indicated by the airborne geophysical survey in the central and eastern part of the property. Both the Delta and Gamma zones can be expanded with further drilling to increase the grade and expand the reserves. In the Tetra Tech Wardrop report, please find Tables 14.5 to 14.7 for these zones. The Sigma zone remains to be explored and is untested at this time and drilling is planned for this zone as well. Interpretation of previous geophysical and geochemical results indicate that the untested Sigma zone has a great potential and will be investigated in the next round of drilling. Higher grade mineralization is associated with the intensely altered quartz feldspar porphyry, aplite dykes and breccia zones.