Grizzly Discoveries’ inactive Alberta Potash Project consists of three highly prospective metallic and industrial mineral permits in two blocks in Alberta abutting the border with the province of Saskatchewan covering approximately 27,500 ha. Two of the claims constitute the North Block, near Lloydminster, with the third claim constituting the South Block located near Medicine Hat. The Alberta Potash claims are in close proximity to, or directly containing areas that are underlain by, the potash-bearing Prairie Evaporite Formation.
The Alberta Potash Project was initially assessed by the Company as being prospective for potash in 2009 through a compilation of historical oil and gas well data and archived drill cores with the Alberta Government. The North Block of the Alberta Potash Project includes the historic Vermillion Consolidated Oils No. 15 well (“VCO #15”), originally drilled in 1944 and revisited in 1965. VCO #15 reported 3.7 m of carnallite (“KCl”; a highly soluble form for extractable potash) in the upper part of the Prairie Evaporite Formation. Further analysis noted a 15.2 m section containing a pinkish-grey potash mineral (possibly sylvite (“K2O”)) in the top part of the Prairie Evaporite. The potash bearing section was reported to be underlain by 122 m of halite (“NaCl”). The remaining core available from VCO #15 yielded up to 18.6% K2O (29.4% KCl). These results indicate a similar composition, depositional sequence, and depth as the potash at the historic Unity Mine in Saskatchewan, which reported grades up to 22% K2O.
In late December 2011, the Company drilled Well GZD100 MEDHAT 8-36-19-01W4 on the South Block. Coring commenced at 1,642 m below surface and visible potash minerals were observed in the core for the interval between 1,645.5 m and 1,670.85 m. The well cored a thick zone of Prairie Evaporite Formation salt intersecting a wide, low grade potash zone (22.35 m) at a depth of 1,648.5 m and intersected two zones of sylvite mineralization (Upper and Lower Zones) within what is interpreted to be the Patience Lake Member.
Analytical results of the drill core included weighted average grades of:
- 2.62% K2O (4.15% KCl equiv.) over 22.35 m at a depth of 1,648.5 m for the low grade zone;
- 6.4% K2O (10.14% KCl equiv.) over 4.55 m, which included 13.0% K2O (20.58% KCl equiv.) over 1.15 m for the Upper Zone and 2.45% K2O (3.88% KCl equiv.) over 3.3 m for the Lower Zone, and;
- a 0.3 m core sample assaying at 31.1% K2O (49.2% KCl equiv.), the best result in the core.
The above intersections seem to occur at a similar depth to the Belle Plaine Potash Solution Mine near Regina, Saskatchewan and the Company believes that a potential potash resource on the North Block would consist of sylvite at a depth ideally suited to solution mining, a lower cost and lower environmental-footprint potash mining method than conventional potash mining methods.
Grizzly Discoveries has chosen to focus its exploration and development efforts on its mineral properties in British Columbia (Greenwood, Robocop) and the Alberta Potash project is currently inactive.
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