Li – Ta Pegmatite Dykes
|Status:||Phase II Drilling, Geological Mapping|
|Potential:||Excellent – for identifying extensions of the known Pegmatites
Very Good – for discovery of new zones along known and new dykes
|Results:||Drilling intersected the Marko's, Marko's North, and #7 zoned pegmatites with intersections up to 3.76% LiO2 / 4.0m, and 402ppm Ta2O5 over 4.7m.|
|Ownership:||100% Champion Bear|
The Separation Rapids Lithium property lies 55 km north of Kenora in northwest Ontario. The property occurs within the eastern portion of the Separation Rapids pegmatite field which is considered the eastern extension of the Cat Lake - Winnipeg River pegmatite field host of the Tanco Mine in Manitoba.
Champion Bear's properties occur within the 0.8 x 5 km area forming the eastern pegmatite subgroup located 5 km east of the Big Whopper deposit. The most significant pegmatite in this subgroup is the very well zoned (differentiated) Marko's Petalite pegmatite – the dyke is a lens-shaped mass that averages 8m in width and extends for at least 170m at surface. Several other narrower (1-3m) dykes occur east and north of Marko's including Marko's North which was intersected when drill testing Marko's.
At Marko's, petalite, the main lithium mineral forms the central core and is enveloped by oxide mineralization containing appreciable Ta and elevated Sn and Cs values. Two core zone units contain up to 95% petalite indicating that Marko's is one of the purest pegmatite concentrations known in the area. Hole SR-12 intersected the Marko's pegmatite over 13.7m – the upper portion is a blocky petalite and feldspar phase that returned 1.4% Rb, the lower section assayed 402ppm Ta2O5 (0.81 lbs/t) over 4.7m. SR-17 intersected the dyke over 17.2m and encountered two petalite horizons as well as two oxide-bearing horizons which returned 166ppm Ta2O5 over 3.9m and 180ppm Ta2O5 over 2.0m. The dyke appears to be flattening to the east.
At Area # 7, three 6-10m long dykes occur up to 5m wide occur over a strike of >100m and returned appreciable values of Li (>2000ppm), Ta (642ppm), Cs (917ppm), Rb (>7,000ppm) and Sn (>10,000ppm) in drill core and surface channel samples. Drilling encountered several new dykes to the southeast including one that assayed 176ppm Ta2O5 over 1.5m.