As previously reported, P.A.T Mines drilled extensively a series of veins near the southern boundary in the 1950s. The company was also able to locate what it believes to be the PAT Veins where they outcrop on surface. Several samples were taken from the vein along a 50m exposed section that returned 1m chip samples of 13g/t and 21 g/t gold within banded iron formation units. These high-grade veins are similar to those mined at the Leitch and
In addition to the surface sampling Riverside completed a geological interpretation of the project to evaluate the timing and relationships of structural events and gold mineralization. As at the
'Riverside is very excited to have found high grade gold on surface at the PAT Veins. While the veins are mostly covered by the forest organics, the banded iron formations associated with the veins and mineralized shears are easy to locate using the magnetic survey completed in 2022. The BIF unit extends across the project outlining a multi-kilometer' states Riverside's President and CEO,
This fall the Company completed a structural analysis of the geology and timing of mineralization at Pichette in order provide some context of the structures within the property and how they relate to the evolution of larger greenstone belt and nearby past producers and known gold occurrences. This analysis interprets the first phase of deformation resulted in folding of the Banded Iron Formations and north-south shortening of intrusions with most of the vein mineralization occurring during a second sinistral shearing event. These rocks were again subjected to a third dextral shearing event which resulted in some remobilization in metals.
On surface the mineralized zone consists of sugary and banded quartz with massive pyrrhotite and lesser arsenopyrite and pyrite with chlorite The average width of the altered and mineralized zone is 30m consisting primarily of pyritized and silicified mafic metavolcanics and BIF. Historical drill logs suggest a sharp contact between geological units that include mafic metavolcanics, metasediments, gabbros and quartz porphyries.
Gold is commonly enriched in intensely altered rocks adjacent to or within quartz-carbonate veins and veinlets as is found in orogenic deposits. Several of the historical drill logs document high grade intercepts similar to those documented at the
The alteration comprises a sequence of well fractured greenstone containing occasional small stringers of hard, reddish, siliceous material, with slight pyritization. The rock changes northward into a light green or tanned rock described in logs as 'carbonate'. On surface more siliceous phases are noted with hard, black cherty material often found with the quartz veins. Moving further away from the zone a sericitic phase dominates.
Rock samples from the exploration program discussed above at Pichette were driven from site to
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