Property Details

 Rottenstone Project Profile - Download

The Rottenstone property is located approximately 130 kilometers NNE of the town of La Ronge, northern Saskatchewan consisting of 7 contiguous mineral dispositions covering 26,217 acres.  The Corporation owns 100% of the mineral interest covered by the mineral dispositions as described below.  Claude Resources Inc. (“Claude”) retains a 2% net smelter return (NSR) on one mineral claim, S-106565, and a 0.5% NSR on the adjoining mineral claims within a 3 kilometers distance from S-106565.  The Corporation has the option to purchase one-half (1% NSR) of the 2% NSR by paying Claude $1,000,000. Based on an Amendment to the Option to Purchase Agreement dated October 5, 2007, by November 30, 2013, the Corporation must complete a 'bankable feasibility study' on S-106565 or return the mineral disposition to Claude.

The Rottenstone deposit was first discovered in 1928 as a surface exposure along the shoreline of Rottenstone Lake. The deposit was mined in the mid 1960s, producing 40,000 tons of high grade nickel-copper-platinum group elements plus gold (Ni-Cu-PGE +Au) ore; grading 3.28% Ni, 1.83% Cu and 9.63 g/t (Pt-Pd-Au). The Ni-Cu-PGE mineralization occurs as net-textured to semi-massive sulphide (40-60% sulphides) hosted in an ultramafic sill. The high Ni-Cu-PGE grades associated with Rottenstone are a function of the high proportion of contained sulphides. The host ultramafic sill is believed to be part of a significantly larger, sulphide-rich ultramafic intrusive body of similar grades occurring at depth and proximal to the known surface deposit. The exploration model is an ultramafic intrusive sill-like body comprised of net textured, semi-massive to massive Ni-Cu-PGE bearing sulphides occurring within structurally deformed supracrustal meta-sedimentary rocks.

Uravan has conducted exploration programs on the Rottenstone property intermittently from 1998 – 2008. Exploration includes, airborne geophysical VLF-EM/MAG and VTEM surveys, a property-wide tree-top biogeochemical survey, reconnaissance B-horizon soil geochemistry surveys, ground geophysical TEM, MAG, MaxMin, Gravity and IP surveys,  and  reconnaissance diamond drilling.  Forty-six (46) diamond drill holes amounting to 9,323 meters have been drilled and sampled.  Drilling to date has been reconnaissance in nature, targeting favorable coincident geophysical – geochemical profiles.

Based on the combined Rottenstone geophysical surveys (VTEM, EM, IP and gravity), the Corporation recently completed a re-examination of this data using more current interpretive/modeling geophysical techniques. As a result, recent interpretive-modeling of the Rottenstone database (geological, geochemical and geophysical), has establish new Ni-Cu drill targets proximal to the previously minded Rottenstone deposit. These drill targets were established using Resistivity Depth Imaging¹ (RDI).  RDI is a graphic representation of inverted EM (electromagnetic) decay data into conductivity/resistivity depth profiles. These profiles are then displayed in 2-dimensional (2D) cross-sections.  Other geological, geochemical and structural information can then be displayed in cross-section with the RDI profiles.

The coincident display or stacking of other geological data on the RDI 2D profiles has greatly enhanced the Corporations ability to vector drilling toward new potential mineralized ultramafic bodies.  Several proposed drill holes specifically target sub vertical conductive geophysical responses (EM conductors). These steeply dipping conductors are generally supported by other favorable geological, structural or geochemical features, and other geophysical anomalies (i.e. IP and gravity). It is anticipated that these new targets will be drill tested in early 2011.