Roughrider Exploration Limited ("REL") acquired through staking a total of 17 new claims comprising seven properties in the highly prolific uranium producing northern Saskatchewan Athabasca Basin region. The claims are 100% held by Roughrider Exploration Limited. See figure below.
Wollaston-Mudjadik Structural Corridor
The Walker Creek
(2,298 ha) property fits with Roughrider's stated exploration goals being located along favorable sub-Athabasca Basin basement rocks within the Wollaston-Mudjadik structural corridor. The Wollaston-Mudjadik trend is related to the majority of the historic and producing high-grade uranium mines of the eastern Athabasca Basin. Walker Creek
is located within 3 km of Highway 914 southwest of the Athabasca Basin and the Key Lake uranium mine. At the Walker Creek
property, Getty Minerals Co. reported two uranium occurrences in 1975 with results of up to 4.60% U3O8 across 0.15 metres and 0.138 U3O8 in a grab sample (Saskatchewan Ministry of Economy assessment file 74B09-0006).
Black Lake-Charlebois Lake Area
The Mozzie Lake
property is comprised of two claims totalling 4,098 ha roughly 25 km north of the Athabasca Basin contact in the Black Lake area. The Mozzie Lake
uranium prospect occurs within the Mudjatik Domain and has been demonstrated to include significant thicknesses (up to 38.1 metres apparent width) of highly anomalous uranium. Uranium is hosted in biotite-rich pegmatite where associated with thick assemblages of calc-silicate rocks. Mozzie Lake
was the subject of a very focused 19-hole diamond drill program in 1967-68.
The reported historic 1968 Mozzie Lake
sample results for core hole DDH68-20A-02
* Drill intervals include up to a total of ten 0.3m intervals of lost ("ground") core for which no analysis is reported; a grade of 0% U3O8 was assigned for these intervals of no core recovery in the calculation of the weighted averages above.
† Historic 1968 work completed by Trigg Woollett and Associates on behalf of King Resources Company; Assessment report 74P/07-0043).
The radioactivity at Mozzie Lake
reportedly occurs associated with biotite-rich pegmatite.
- The presence of biotite favours the deposition of uraninite.
- The radioactive pegmatites are closely associated with metasomatic calcareous metamorphic rocks.
- Dolomitic limestone likely contributes to the formation of the diopside-rich calcareous metamorphic rocks and the high percentage of biotite in the pegmatites.
The Mozzie Lake Uranium occurrences are unique in the region based on their close association with very significant units of calc-silicate rocks. The area is underlain by:
Fire Eye Lake Area
- Biotite-rich (10%-20%) pegmatite.
- Serpentinized marble (dolomitic limestone; observed in diamond drill core).
- Quartz-feldspar-biotite gneiss (protolith: slightly calcareous shale).
- Quartzite (protolith: chert).
The 2,662 ha Fire Eye Lake
uranium property is located 65 kilometres southwest of Roughrider's Genesis Property, and east of the Athabasca Basin margin, at the south margin of the Wollaston Domain.
The property overlies an inlier of Wollaston Domain metasediments, and occurs in close spatial association with the Needle Falls Shear Zone contact between the Paleoproterozoic Wollaston and Peter Lake Domains.
In 1969, Great Plains Development identified numerous areas of high radioactivity (500 to 5,000 cps) in the area. In particular, strong radioactivity (up to 1,100 counts per second) was identified at airborne radiometric anomaly R69-27 on the northeast end of Fire eye Lake
. Biotite gneiss was mapped in the area and was recommended for further work.
In 1977 and 1978, CDW Investments undertook geological mapping and scintillometer survey work. A zone of radioactivity was identified northeast of Fire Eye Lake with 5 to 6 times the normal background. Trenching revealed a silicified radioactive zone in metasediments. Grab samples collected from the CDW occurrence produced results of:
- 0.27%, 0.34%, 0.08% and 0.03% U3O8.
CDW also identified two exposed silicified zones 0.6m and 0.9m wide. The mineralized zones are covered by thick overburden to the south. A subsequent VLF EM survey identified conductive zones which were coincident to the zone of mineralized alteration and along Fire Eye Lake, however work was halted without further investigation of these zones.
In 1984, GSC undertook a lake sediment survey. Samples identified multiple lakes on and adjacent to the property with anomalous radiation values, including:
- 54.1 ppm U, 24.1 ppm U, 19.6ppm U and 17.6 ppm U.
The Fire Eye Lake
property is located at the southwest end of an 80 kilometre northeast trending belt highlighted by 58 anomalous lake sediment results (ranging from >20 to 130.0 ppm U).