- Location: 35 kilometres south east of Timmins, Ontario
- Minerals: Nickel
- Ownership: 100% Rogue Iron Ore
Langmuir Property is accessible by road and is only 30 km south of Xstrata's Timmins Metallurgical Facility which has an idle nickel circuit. The property is also located seven km by road from Liberty Mines Nickel mill which has a capacity of 2000 tonnes/day. Langmuir is comprised of 74 contiguous unpatented mining claims of 856 units (13,841 hectares).
At Langmuir the primary exploration target is Kambalda style nickel sulphide mineralization occurring in ultramafic flows and sills. The Langmuir Property includes over 30 km of terrain comprised of ultramafic and mafic flows and sills favourable for hosting nickel, copper and platinum group mineralization (PGM).
Air borne geophysics has been flown over the entire property by Geotech using VTEM B-field system. More than 20 separate clusters of airborne EM anomalies have been identified.
The Langmuir nickel deposit was found by drilling one of the anomalies in one of the clusters in early 2007. Several other VTEM anomalies and clusters appear on strike with the discovery zone. These anomalies occur in an arcing trend that wraps around the Shaw Dome. This geological environment bears a striking similarity to Kambalda nickel ore deposits which are localized along the flanks of the Kambalda Dome in Western Australia.
Nickel ore deposits in the Kambalda camp often occur in groups or clusters. For example, 12 nickel deposits occur within an ultramafic flow unit of approximately 8 km by 4 km in area. At Langmuir the ultramafic flow package is 20 km long and up to 4 km wide. Therefore, the potential exists on the Langmuir Property to have one or more clusters or groupings of Kambalda style nickel deposits.
Kambalda deposits can be very high grade nickel (+/- Cu, Co, PGE) deposits as exemplified by the type deposits in the western part of Australia. Western Mining Corp. (WMC) was one of the first companies to explore and develop Kambalda nickel deposits in the late 1960's. By the late 1990's WMC was still mining and reportedly producing upto 35,000 tonnes of nickel annually from its' Kambalda operations. This equates to about 77 million pounds of nickel per year. The current price for nickel is about US$12.50 per pound.
Geology and Mineralization
In May, 2007 drilling by the Company intersected 1.14% nickel over 72.45 metres, including two separate heavily mineralized intervals of 2.23% Nickel (Ni), 0.22% Copper (Cu), 0.20 g/t Platinum (Pt), and 0.50 g/t Palladium (Pd) over 17.50 metres of drill core, and 1.74 % Ni, 0.12% Cu, 0.20 g/t Pt, and 0.47 g/t Pd over 13.10 metres of drill core.
Drilling to date on the Langmuir W4 nickel discovery has established three parallel nickel bearing zones (A, B, C) within altered peridotitic komatitic flows. The nickel sulphide mineralization consists of primarily pentlandite-pyrrhotite occurring as fine disseminations, fracture fillings, and blebs. Higher nickel values of up to 5-7% occur where sulphide concentrations increase to 30 or 35% (semi-massive). Locally massive sulphide sections are present grading up to 17.9% Ni.
The nickel zones range in true width from 2 to over 18 metres and have been followed along strike for 200 metres and to a vertical depth of 250 metres. The A zone comes to surface with only 5 to 10 metres of overburden cover. Thus far the deepest nickel intersection is on the C zone at about 375 metres below surface. All zones are open at depth below 400 m vertical. The zones dip subvertically to the north and may roll and dip toward the south according to geophysics.
Rogue Resource geologists and SRK Consulting (Canada) Inc. have modeled the shape and size of the Langmuir W4 nickel deposit and compiled a resource estimate in 2010.
Table 1: Resource Evaluation*, Langmuir W4 Project, Ontario, Canada, prepared by SRK Consulting Inc., dated June 28, 2010 (May 12, 2010)
|Tonnes||Ni %||Cu %||Ni lbs 000's||Cu lbs 000's|
* Mineral resources are reported in relation to optimized pit shells. Mineral resources are not mineral reserves and do not have demonstrated economic viability. All figures are rounded to reflect the relative accuracy of the estimate. All assays have been capped where appropriate.
**Open pit mineral resources are reported at a cut-off of 0.40 percent nickel inside a conceptual pit shell. Underground mineral resources are reported at 0.70 percent nickel and include resource blocks above cut-off outside the conceptual pit shell. Cut-off grades are based on a nickel price of US$8 per pound and a metallurgical recovery of eighty-seven percent, without considering revenues from other metals.
Geophysical surveys and modeling programs have identified VTEM conductors on strike with the W4 nickel deposit and at depth that remain to be fully tested. Drilling in 2009 by the Company discovered nickel mineralization approximately 1.5 kilometers east of the W4 Nickel deposit. The discovery, known as the W2 Discovery was initially drilled following up on combined VTEM conductors and strong MMI nickel anomalies. The first drill hole, GCL09-1, intersected 3.3% nickel over a drilled width of 0.9 meters. Another hole, GCL09-10 drilled 25 meters east of the first hole program intersected 0.55% nickel over 20 meters including 1.72% Nickel over 3.0 meters drilled width.
In 2011 the company will continue to advance the project towards production while conducting further exploration on other targets on the property.