Sedimentary and volcanic rocks of the Jurassic Hazelton Group are intruded by quartz monzonite and granodiorite and later feldspar- quartz prophyry of the Cretaceous to Tertiary Coast Plutonic Complex. The Hazelton rocks are dominatly meta-siltstone and porphyritic andesite with minor meta-greywacke argillite, dacite and basaltic andesite. These rocks have been locally hornfelsed. Distribution of the hornfels generally coincides with zones of molybdenite mineralization.
Discontinuous molybdenite mineralization occurs in a zone measuring 1300 by 200 by 150 metres, in a northwest direction. Molybdenite and minor chalcopyrite, pyrite, and magnetite occur in quartz veins and fractures. The veins, up to 25 centimetres wide, are generally flat lying and shallow dipping. A grab sample assayed 0.097 per cent molybdenum and 1.90 per cent copper (Assessment Report 7740).
Alteration includes feldspathization and chloritization of the quartz veins and bleaching, with associated disseminated pyrite and pyrrhotite, of the hornfels.
Commencing in late 2005, BCM carried out a staged exploration program consisting of airborne magnetic surveying, followed by grid-based ground geophysics (11 line kilometres of I.P.) geological mapping and soil geochemical sampling. Selected targets generated by this work on the northern portion of the BCM property were subsequently tested with an initial seven hole, 992 metre diamond drilling program. The drilling mainly targeted resistivity and/or chargeability features defined by the IP survey at or near
the interpreted contacts between granitoid intrusive rocks and metasedimentary country rocks. The drilling revealed that the resistivity features generally correlated with pervasive silicification, in places associated with discrete quartz veining. Some of the veins are variably mineralized with pyrite, chalcopyrite and molybdenite. Maximum assay values encountered in the drilling (generally over 2 metre sample intervals) were 101 ppm molybdenum, 590 ppm tungsten and 475 ppm copper (www.bcmresources.com - News Releases Dec 21, 2006).