Geological And Geochemistry Analysis With Drill Results At Pinnacle Zone

VANCOUVER – Interra Copper Corp. reported on results from the final two holes drilled at the Pinnacle Zone after its summer drill program that totaled 2,774 meters in 12 holes, at its 20,600 hectare Thane Property, located on traditional territory of the Takla and Tsay Keh Dene First Nations in North Central B.C.

The Company completed an IP survey and over 3 northeast trending IP lines (L4900-5100E) within the Pinnacle area over and to the northwest and southeast of the Pinnacle Showing to identify the sub-surface extent and depth of auriferous hydrothermal veining mapped on surface. A soil sampling program was completed on the 3 northeast trending IP lines (L4900-5100E) within the Pinnacle area to define copper-gold anomalies proximal to the Pinnacle Showing. Mineralization and associated alteration within the reported intervals above are hosted within the Thane Creek diorite (207 and 194Ma) and the Duckling Creek monzonite to syenite (182 and 175Ma) intrusive phases of the Hogem Batholith.

There were surficial exposures of late-stage barren, frequently open space hydrothermal quartz-carbonate (calcite) veins, moderate to high-grade auriferous quartz-arsenopyrite-pyrite-chalcopyrite veins and breccias occur within or proximal to chloritic shears. Porphyry related outer propylitic (chlorite-quartz-calcite-sericite±epidote) and structurally controlled silica alteration occur throughout the Pinnacle zone and at depth. K-feldspar occurs as contact alteration proximal to Duckling Creek intrusive phases and late localized vein halo alteration to quartz±epidote veins and fractures. Porphyry style magnetite veining, brecciation and primary mafic replacement related to potassic alteration is absent within the Pinnacle showing, and drilling confirmed the presence of late-stage hydrothermal auriferous quartz-arsenopyrite-chalcopyrite-pyrite within structures and breccias at moderate depths from surface mineralization.

The mineralization at Pinnacle is structurally controlled occurring as fractures, veins and breccia infill proximal to diorite-(quartz) monzonite contacts and south-southeast trending moderate to steeply (40-80°) southwesterly dipping chloritic shears. Areas of increased chargeability observed within the recent completed Walcott Associates Ltd. IP survey somewhat correspond to an increase in sub-surface sulphide mineralization. At least one phase of mineralization within Thane and Duckling Creek suites of rocks appears related to a later intrusive phase within the batholith,  and copper-gold mineralization at depth is at significantly reduced grades to samples collected from the surface, which may be due to secondary supergene enrichment of the surface samples.