I wonder if this NW corner is related to the Ni, Cu SGX was drilling for in 2007 when they found gold in hole 7 as per the July 24, 2007 NR:

Hole -7 - was drilled as a vertical hole in the down dip section of the zone but did not intersect the mineralized gabbro as the hole deviated from the intended target. However, this hole intersected a pyritized carbonate rich section of chloritic tuff that yielded

over 0.73 metres. This gold bearing horizon represents a new zone of mineralization that is not related to the Ni-Cu mineralization within the gabbro.