Geological mapping on the 650 Level at Timmins Mine indicates that mineralization occurs as a series of east-west trending lenses surrounding a steep west plunging fold nose formed at the contact between ultramafic and volcanic rocks. The bulk of the mineralization identified to date is closely associated with swarms of quartz veins controlled by east trending shear zones as well as sulphide minerals located immediately adjacent to the veins. The Ultramafic Zone appears related to a shear structure following close to the axial plane of the plunging fold with the Upper Footwall Zone related to secondary structures immediately to the north and close to the contact between the ultramafic and mafic volcanic rocks.

This is obviously Lakeshore Gold but isn't this how they describe Horeshoe lake.