Active exploration for Nickel-Copper in the Haut-Plateau de la Manicouagan has been ongoing since the 1960’s. More than 100 Ni-Cu +/- Co, PGE have been documented in the Quebec part of the Grenville Province and in adjacent Labrador. These occurrences are mainly associated with mafic and ultramafic rocks, and anorthositic intrusives that have a wide range of ages and occur in various tectonic settings.
The HPM Property is located on the Haut-Plateau de la Manicouagan Region, within the Allotochtonous Belt of the Grenville Province. Active exploration for nickel and copper in the Haut-Plateau de la Manicouagan has been ongoing since the late 1970’s.
From 1991 to 1992, Falconbridge completed a helicopter borne EM survey over the central part of the area totaling 1,000-line km. This led to the implementation of reconnaissance mapping and litho-geochemical sampling programs over the entire granulite complex in order to understand the geological environment of the Manicouagan Complex.
From 1999 to 2002 exploration included UTEM and THEM surveys and 2,903 metres of drilling. Occurrences are mainly associated with mafic and ultramafic rocks, and anorthositic intrusives that have a wide range of ages and occur in various tectonic settings. In 1999, reconnaissance exploration by Falconbridge led to the discovery of several nickel-copper-cobalt occurrences in the Haut-Plateau de la Manicouagan including the Barre de Fer prospect as well as the PYC showing.
Most of the nickel-copper-cobalt sulphide showings found to date on the Property, while displaying some primary magmatic features/textures, appear to be at least in part structurally controlled or remobilized. Two notable Canadian examples of nickel-copper mineralization exhibiting similar characteristics are the Montcalm and Lynn Lake Ni-Cu deposits, which are interpreted to have been tectonically emplaced into their current locations from a predominantly pyroxenitic host during the late stages of consolidation.
In October 2007, PNI entered into an option agreement with Manicouagan Minerals Inc. (now Murchison Minerals Ltd.) granting the Company the right to earn up to 70% interest in the properties. In November 2009, the Company completed the required exploration and payments in earned its 50% interest in the Property.
In 2008, the Company completed an exploration program which included an airborne EM and magnetic (AeroTEM II) survey, follow-up ground HLEM and magnetometer surveys, ground prospecting and a 3,388-metre drill program. 17 diamond drill holes were completed.
Drilling at Barre de Fer was successful in extending the known nickel-copper-cobalt mineralization for approximately 300 metres along strike and to a depth of about 280 metres. The mineralization remains open at depth and partially along strike. The best intercept from the 2008 drilling at Barre de Fer was from hole HPM-08-03 which intersected 43.15 metres grading 1.74% Ni, 0.90% Co and 904 ppm Co.
Limited ground follow-up of priority airborne EM targets lead to the discovery of several new sulphide occurrences (Syrah, Muscat and Pinot among others). Several other priority airborne EM targets on the HPM claims remain to be followed-up.