Drilling in 2015 expanded the Spotty Hill zone by 80 metres in a down plunge direction and resulted in the intersection of additional nickel-copper sulphides at six regional exploration targets including P-013, P-030, P-032, P-053, P-058 and P-059.
The Maniitsoq mineralization typically consists of pyrrhotite, pentlandite, pyrite and chalcopyrite. Previous high definition mineralogical studies identified pentlandite as being the primary nickel-bearing phase hosting > 90% of the nickel and indicated potentially high nickel recoveries using convention mineral processing techniques.
In July 2015, SRK Consulting (Canada) Inc. of Toronto, ON carried out a three week structural and lithological mapping program including review of 2015 drill core. This work led to a better understanding of the geological setting including the identification of a widespread sedimentary basin which was intruded by mafic to ultramafic intrusions of the Greenland Norite Belt (GNB) and later subjected to metamorphism and poly-phase deformation. These features are similar to those of the Thompson Nickel Belt.
NAN geologists completed detailed mapping over several mineralized norite intrusions in 2015. This information was used by SRK in conjunction with drilling data to carry out 3-D modeling of the deformed norites and related mineralization in order to aid in drill hole targeting and this methodology promises to be useful in future follow-up drilling.
Maniitsoq mineralization comprises disseminated, blebby, net-textured, semi-massive and massive sulphides. Secondary structural processes have affected primary sulphides resulting in the formation of stringers, veins, fracture fillings and sulphide breccia veins. The sulphide zones are commonly represented by multiple discrete EM plates and this is interpreted to be due, at least in part, to the remobilization and disruption of primary magmatic sulphides. In 2015, step-out drilling which targeted the projected down plunge extents of mineralized zones, but not necessarily specific EM plates, continued to intersect mineralized norite.
EM methods have proven successful at identifying the higher grade, more sulphidic portions of a given zone but are not as effective at outlining the overall envelope of mineralization which can include significant accumulations of disseminated, blebby sulphides and/or less interconnected sulphides. In 2016, the company plans to carry out Induced Polarization (IP) test surveys to determine if this method is useful in defining the overall extents of mineralized zones.
The 2015 airborne survey completed the VTEM coverage over the GNB as defined on the Maniitsoq property. During the period extending from late July through to mid-September, DigitalGlobe of Longmont Colorado successfully collected high spatial resolution multi-spectral Worldview-3 satellite data across the entire property. Integrated with the Company’s other exploration datasets, this imagery provides the potential to directly target gossanous mineralization on the ground and to vastly improve on the level of mapping detail across the property.
Drill collar information and significant assay data from the 2012, 2013, 2014 and 2015 drilling programs are provided as links below:
Significant 2015 Drilling Intersections at Maniitsoq
Collar Coordinates for all 2015 Maniitsoq Drilling
Significant 2014 Drilling Intersections at Maniitsoq
Collar Coordinates for all 2014 Maniitsoq Drilling
Significant 2013 Drilling Intersections at Maniitsoq
Collar Coordinates for all 2013 Maniitsoq Drilling
Significant 2012 Drilling Intersections at Maniitsoq
Collar Coordinates for all 2012 Maniitsoq Drilling
Quality Control and Qualified Person
The drilling was completed by George Downing Estate Drilling of Canada utilizing a Boyles JKS 300 diamond drill rig. Drill core samples (41mm BTW) are cut in half by a diamond saw on site. Half of the core is retained for reference purposes. Samples are generally 1.0 to 1.5 metre intervals or less at the discretion of the site geologists. Sample preparation is completed at the ALS Minerals preparation lab in Öjebyn, Sweden. Sample pulps are sent by air courier to ALS Minerals analytical laboratory in Loughrea, Ireland. Blank samples and commercially prepared and certified Ni sulphide analytical control standards with a range of grades are inserted in every batch of 20 samples or a minimum of one per sample batch. Analyses for Ni, Cu and Co are completed using a peroxide fusion preparation and ICP-AES finish (ME-ICP81). Analyses for Pt, Pd, and Au are by fire assay (30 grams nominal sample weight) with an ICP-AES finish (PGM-ICP23).
All technical information has been reviewed by Ms. Patti Tirschmann, P.Geo., who is the Qualified Person for the Company, Vice President - Exploration, North American Nickel Inc.