Geology & Mineralization

The Hasaga Property is located in the Red Lake Greenstone Belt (RLGB), an Archean-aged greenstone belt within the Uchi Sub-province of the Superior Structural Province. The oldest volcanic rocks, and economically most important, are tholeiitic to komatiitic basalts making up the Balmer Assemblage. This extensive mafic to ultramafic lithology is estimated to be some 2,900 million years old and underlies the central and eastern portions of the belt.

Gold mineralization at the Hasaga Property occurs within a quartz porphyry dike and is an extension of similar mineralization occurring at the Howey Mine. The dike was intruded into an elongated tongue of coarse clastic sedimentary rocks which extends into the Howey diorite. Part of the tongue is cut off along the northwest side by the Dome granitic stock. A pink granitic stock, believed to be of the same age as the Dome Stock, cuts across the quartz porphyry dike near the No. 1 shaft. Mafic dikes are present along the margins of the quartz porphyry dike.

Before the introduction of the porphyry dike, the country rocks were fractured along north-easterly and south-easterly directions. The porphyry dike was intruded along the north-easterly direction. After the porphyry was emplaced, deformation produced a second set of fractures along directions north-north-easterly and east-north-easterly. Later mineralization fluids deposited auriferous quartz within the fracture sets.

An additional target for future exploration occurs immediately east of the historic Laverty Dike Zone on the central portion of the property, south of the Gold Shore Mine, where diamond drilling in 1987 collared into a 218-metre intercept grading 0.75 grams per tonne. 

Maps