Drill-testing of down-hole conductors has led to the discovery of a second zinc-silver horizon at the Sheraton massive sulphide project in Timmins, Ont., reports
Starting 600 metres vertically below surface, hole 69 intersected 25 metres averaging 0.32% zinc and 6.8 grams silver per tonne, including 1.5 metres grading 1.62% zinc and 7.8 grams silver.
Dubbed Footwall, the zone occurs 150 metres lower in the stratigraphic sequence that hosts the Cross Lake zone. That zone was intersected farther up-hole, with 88.5 metres averaging 0.48% zinc and 8.6 grams silver and containing three higher-grade intervals of between 1.5 and 3 metres in thickness and grading 1.4-1.66% zinc and 2-24.5 grams silver.
Both zones are hosted by felsic volcanic breccias and cherty exhalites, suggesting the possibility of a stacked massive-sulphide mineralizing system. The volcanic sequence itself dips steeply to the south and appears to become thicker at depth.
Meanwhile, hole 70-A has extended the Cross Lake zone 150 metres down-plunge, to 900 metres. The hole returned 35.5 metres (665-700.5 metres) averaging 1.24% zinc and 11.4 grams silver, including 4.5 metres of 2.91% zinc and 14.5 grams silver.
Continuity has been confirmed as well, with hole 67 intersecting 10.5 metres (365-375.5 metres) averaging 1.88% zinc and 10.4 grams silver. That interval occurs between two similar ones intersected previously, and includes 6 metres grading 2.13% zinc and 8.2 grams silver.
Cross Lakes notes that mineralization remains open in both zones, as indicated by down-hole geophysical surveys. Future programs will test these anomalies, as well as a 900-metre-long induced-polarization anomaly along strike to the northeast and a copper prospect 1 km to the southwest.
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