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The Whitemud Property
The Whitemud (former Ogani deposit) property is located in Red Lake within the south-eastern Confederation Lake belt, lying within the English River Sub-province. This area of northwest Ontario is an area of historic iron exploration and mining. This property is within driving distance of Ear Falls approximately 55 km east-northeast.
Location and Access
The Whitemud property is located in Red Lake within the south-eastern Confederation Lake belt, lying within the English River Sub-province. This area of northwest Ontario is an area of historic iron exploration and mining. This property is within driving distance of Ear Falls approximately 55 km east-northeast.
Description and Ownership
The Whitemud Property is comprised of a contiguous block of 30 unpatented mining claims occupying the northwest portion of the Whitemud Lake area, with portions overlapping into the Slate and Bluffy Lake areas. The Whitemud Property is centered on Whitemud Lake with a large block branching up to the northeast and covering the Papaonga River. The Whitemud Property covers an area of approximately 6,567 hectares. The table below describes the claims comprising the Whitemud Property.
There are no private holders of the surface rights of the land covered by the claims, and the land currently belongs to the Crown. Northern Iron conducted a moderate exploration program on the Whitemud Property including geological mapping, ground based geophysics, and limited diamond drilling and assaying of drill core during the summer and fall of 2010.
Northern Iron acquired a portion of the claims which comprise the Whitemud Property in July 2010 through staking. The remainder of the claims were owned by Mr. P. English and optioned to Northern Iron by a purchase agreement dated August 1, 2010, as amended by the Bluffy Lake, Karas Lake and Whitemud Lake Amending Agreement dated April 8, 2011 and a 100% interest in these claims was transferred to Northern Iron. (The transfer application is currently being processed by the MNDM). In the meantime, Northern Iron has the authorization of Mr. P. English to submit assessment work on his behalf. For a description of the remaining payments due to Mr. P. English under these agreements see "The Karas Property – Property Agreements".
The area in which the Papaonga and Whitemud properties are located is covered by a mixed forest of black spruce, poplar, balsam and birch, with swampy biomes in low lying areas and drier forests of jack pine on rises. Temperatures range from 27°C in the summer to -30°C in the winter, with snow cover from November to May. The best season for exploration is from June to October, though some activities, such as diamond drilling and geophysical exploration carried out over swampy areas or lakes may best be undertaken in the winter months, when freeze-up makes these areas more accessible.
Topography on the Papaonga and Whitemud properties is gentle, with elevations ranging from 340 m above sea level to 370 m above sea level.
Between 1956 and 1957 exploration was conducted on the Whitemud Property by Newkirk Mining Corporation Limited, Massberyl Lithium Co. and Quebec Labrador Development Co. Ltd.
The Whitemud property is located within the southern part of the Confederation assemblage, the largest, south-eastern unit of the Uchi Sub-province. The Confederation assemblage is the youngest of three distinct volcano-sedimentary megacycles comprising the Uchi-Confederation greenstone belt, which records a stratigraphic history of approximately 250 Ma (2,989 - 2,735 Ma). The Uchi-Confederation belt records several episodes of periodic rifting and associated submarine and aerial magmatic and depositional phases. Unconformity bounded sequences of mafic to felsic volcanic strata and primarily clastic sedimentary strata accumulated between ca. 2,992 Ma and 2,700 Ma upon a complex extensional architecture, which largely formed the template upon which later structures were superimposed.
The area in which the properties are located is comprised mainly of metasediments and metasedimentary migmatites, with interbedded intermediate to mafic volcanic flows and tuffs, and large igneous intrusive bodies.
The Whitemud Property is underlain mainly by sequences of submarine sediments which have been regionally metamorphosed to the lower amphibolite/upper greenschist facies. Several granitic intrusive bodies ranging in size from less than half a km to the massive Bluffy Lake batholith over 60 km in length are emplaced in the metasediments. These granite sills, dykes and plutons have pushed bedding out of originality and recrystallized host rocks locally due to contact metamorphism. Where these granites to granodiorites crosscut strain corridors associated migmatization of the host sediments and deformed pegmatite dykes derived from these intrusions are observed extending along the strain corridor.
Dominant foliation and bedding in the metasediments is observed trending west-southwest to east-northeast in the southern part of the claim block, and southwest-northeast in the northern part of the claim block, parallel to local strain corridors. Rocks dip sub vertically 75° to 90° towards the north, in the southern part of the claims comprising the Whitemud Property. Sedimentary rocks are comprised mainly of thinly bedded cherty mudstones, greywackes, and fine sandstones. These sedimentary units host archean BIFs of the Algoma type, which form beds 1 m to 5 m thick. They are composed mainly of oxide facies mt (taconite), and minor cherty beds. They are also the main economic target on the Whitemud Property. These BIFs lie parallel to bedding which is parallel to foliation, and are mainly fine grained, becoming slightly coarser grained proximal to granitic intrusions due to contact metamorphism.
The Algoma-type BIF composed of oxide facies mt (taconite) is the only known unit of potential economic value on the Whitemud Property. Drilling by Northern Iron commenced in October 2010 and confirmed the presence of at least two distinct units of BIF composed predominantly of mt oxide facies (taconite) and supported the assumed folding of the BIF. A portion of the Whitemud Property, formerly known as the "Ogani Lake Prospect" has a non NI 43-101 compliant historical resource of 100 million t averaging 21.6% Fe.
However, this resource was calculated prior to the adoption of NI 43-101 reporting standards, and insufficient drill hole data was used. Therefore the results of this resource calculation are not taken into account in the determination of current property occurrences.
Geological mapping was carried out on the Whitemud Property during the summer of 2010 by Lindsay Hills and Raul Sanabria for Northern Iron. Outcrop was scarce and access to many portions of the Whitemud Property was limited.
Northern Iron conducted ground based magnetic surveys over portions of the Whitemud Property that were selected based on the interpretation of a 1956 magnetic airborne survey, as supported by second derivative maps of the magnetism of north-western Ontario. Two main exploration targets were selected: the north-eastern anomaly and the south-western anomaly. Separate grids surveys were run over each target using the same equipment and survey methods. The larger of the two grids, the north-eastern survey, was located over the north-eastern anomaly in the middle of Whitemud Property. Grid lines ran north-south and east-west and were spaced 50 to 100 m apart, with stations spaced approximately 10 m apart along survey lines. The total length of the survey lines was 24.9 km. The smaller of the two grids, the south-western survey, was located over the south-western anomaly, southwest of the north-eastern survey. Grid lines ran north-south, spaced 50 m apart, with stations spaced approximately 10 m apart. The total length of the survey lines was 6.7 km. The resulting magnetic data was used as an aid in interpreting stratigraphy, structure, and to identify BIFs.
Discussion of Results
Though topography was gentle, overburden thickness (as till) and subsequently depth to outcrop, and iron formation varied a great deal between the two survey areas and in the survey areas themselves. In the south-western survey area, the BIF was observed outcropping in several places, which coincided with observed magnetic anomalies from the 2010 magnetometer surveys. However, in the north-eastern survey area, though a large granite/metasediment ridge ran through the middle of the grid, the only iron formation outcropping was observed on the very edge of the south shore of the lake, correlating with the highest magnetic anomaly recorded by the 2010 magnetometer survey. Subsequent drilling conducted during the 2010 field season, revealed a true overburden thickness of 9.35 m over the largest anomaly. This varying overburden thickness likely affected the magnetic signature observed for BIFs in the area. Thus to accurately compare the results from the two grids, it was assumed that the three observed stronger anomalies, in the south-western grid which were relatively similar in intensity, were generated by BIFs similar in actual size to the one interpreted to be generating the weaker anomaly observed in the north-eastern grid. Equalizing the signal strengths of these two anomalies through simple histogram equalization of each grid, resulted in a more accurate interpretation of the anomalies.
All strong magnetic responses were interpreted to represent mt (taconite) iron formations. This assumption was supported by the geometry of the responses, which tended to be very linear, with locally more ellipsoidal and spherical responses. The linear anomalies were interpreted to be tilted taconite beds. More ellipsoidal responses were interpreted to represent folding, deformation, and further overturning of the beds. This interpretation was supported by the location of these more ellipsoidal responses in areas of high deformation close to shear zones and in the convergence area of two shears. The magnetic responses were used to infer the location of banded iron in the property geology. After equalizing the two grids, the best target for drilling was determined to be anomaly A, which was drilled by hole WH-10-01. It was interpreted to be an isoclinally folded nearly vertical BIF, with steeply plunging fold axes.
Northern Iron's drilling on the Whitemud property took place in October of 2010. More Core Diamond carried out the program. However, no NI 43-101 compliant report has been prepared on the Whitemud Property or the results of this drilling.