The following section is sourced and updated from a technical report on the Property by Dunbar and Kociumbas (2009).
Gold is the only mineral known to occur in economically important amounts on the Property and has been concentrated at the Dubenski Gold Deposit. Here, gold mineralization is associated with a “shear zone” that has been traced for a strike length of 915 m, approximately on strike with the volcanic stratigraphy and following roughly the south shore of Flint Lake. The structural control mechanism for concentrating gold mineralization within this deposit is still not clearly understood. It has been suggested that the gold deposit is either syngenetic stratabound in origin, or may have originated as an epigenetic deposit related to a later stage shearing and brecciation event.
The Dubenski Gold Deposit is comprised of three zones which are more or less continuous along strike. From west to east, these zones have been called the Shaft Zone, the Central Zone (comprised of the Near Surface Zone and Deep East Zone) and the Peninsula East Zone (also referred to as just the “East Zone”). To date, diamond drilling has determined that gold is the most concentrated within the Shaft Zone. Gold mineralization is hosted by felsic to intermediate tuffs and lapilli tuffs (Pearson, 1985). According to Norontex (1983), the mineralized structure dips vertical to steeply south, concordant with the volcanic sedimentary formations, having the same strike of the orebody and parallels stratigraphy (105° to 110°), rather than the shearing direction (85°-90° strike, dipping steeply north). Alteration is manifested by silicification, carbonatization and sericitization, resulting in quartz-sericite schist, chlorite schist and talc schist.
Previous operators have made the following observation regarding the mineralization of the Dubenski Deposit (Pearson, 1985 and 1986; Norontex, 1983; Adams, 1974; Eaton, 1974):
Results of the recent drilling indicate that the previously defined zones, Shaft Zone and Central Zone, form one continuous sheet of mineralization that has been designated the Dubenski Gold Zone (“DGZ”). The historical zone names, Shaft Zone, Central Zone, and Peninsula Zone have been maintained for reference.
Figure V, cross section 23+40E, is typical of the Dubenski Gold Zone. The section clearly shows the South, North and Footwall Zones. The drilled thickness of the DGZ varies from 1.2 m in diamond drillhole DB08-39 to 38.9 m in diamond drillhole DB09-47. The average sample length for the latest two drilling programs was 1.0 m.
The Dubenski Gold Zone strikes east-west and dips steeply, 85° to the south. Figure V as seen below shows at station 23+40E a typical cross section for the Dubenski Gold Zone.