| The Mosher
Lake Property covers the Gold Island Showing where gold
mineralization is hosted by sheared Precambrian meta-sedimentary
rocks of the Yellowknife Supergroup. The showing was discovered and
trenched in 1938. Huhill Yellowknife Mines completed 40 small
diameter holes (total: 4,274m) in 1946-47. Twenty-seven holes
intersected the mineralization shear zone and visible gold was
observed in 14 of the holes. Numerous multi-ounce gold
assays were returned, but the analytical data were compromised by
incomplete sampling, small samples and a strong nugget effect. Many
samples with visible gold did not report high assay values. At that
time, "professional sampIing" dictated that the visible
gold was to be removed from the sample prior to assaying. Generally
only the quartz veins were sampled and many thick sulfide - rich
stockwork zones were not sampled.
Three larger diameter holes were
drilled in 1974 by Seaforth Mines. These holes revealed the
potential for significant mineralization within a 35 to 40 metre
thick zone grading more than 2.5 g/t gold. Higher grade sections of
up to 6.4 g/t gold over 10 meters occur within the broad mineralized
zone. Sampling was again incomplete and a strong nugget effect
was still evident. As an example, Seaforth's drill hole 74-2
encountered 5 occurrences of visible gold but no high grade
assay results were obtained. This program showed, however, that the
gold was not restricted to the quartz veins but was distributed
throughout the mineralized shear zone.
In 1990, metallurgical tests of
previously trenched material indicated the head assays from
bulk leach analyses were 20% higher that the fire assayed feed
samples. In 1990, an airborne EM and magnetic survey
outlined 5 significant EM anomalies, some with coincident magnetic
signatures; but no follow-up work was done. One very large magnetic
anomaly was delineated over the Gold Island Showing and extends 500
meters to the south.
In 1996 an extensive program of
ground geophysics (EM VLF, magnetics and IP) was done by Firesteel
over the northern part of the property. Anomalies were defined over
Gold Island and drill targets were identified. Another cluster of
very strong anomalies was defined to the northwest. These are likely
related to the faulted extension of the belt. The targets here are
related to volcanic rocks and there is no record of previous work in
the area.
The known mineralization at Gold
Island occurs within sheared, altered and mineralized meta-sediments
in a geological setting similar to the prolific, high grade
Discovery Mine. Previous attempts at exploration and gold grade
estimation have been plagued by inadequate sampling and uncertain
assay results - partly due to the nugget effect of coarse gold. The
prior drilling tested the zone over a strike length of 240 meters
and to a depth of 125 meters. The zone is open along strike and can
be traced by geophysics for at least 500 meters further to the
south. |
