1957
British Newfoundland Exploration discovers the B-Zone and performs trenching, sampling, scintillometer surveying, and 22 metres of diamond drilling over three drill holes
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The B-Zone Uranium (± Vanadium-Silver-Copper) Deposit is located 135 kilometers north of Happy Valley-Goose Bay in Labrador, Canada, within the Central Mineral Belt, a prolific uranium district extending over 160 kilometres from the Labrador coast to the B-Zone / Moran Lake area. The Deposit is 3.75 kilometres northeast of the Labrador Uranium Inc Moran Lake C Zone Deposit and is hosted within the 1.5 square-kilometre B-Zone property.
The Central Mineral Belt is a northeast trending, one to two kilometre-wide Kanairiktok Shear Zone occurring at the intersection of the Nain and Makkovik geologic provinces. The Nain Province is comprised of tonalitic to granodioritic gneiss and variably deformed granodioritic intrusive bodies with subordinate mafic volcanic rocks of Archean age. The Makkovik province consists of gneissic rocks, granodioritic to granitic intrusive bodies, mafic to felsic volcanic and volcaniclastic rocks, and metamorphic equivalents varying in age from Archean to Paleoproterozoic.
The early-to-mid Proterozoic Moran Lake and Bruce River groups are the two volcano-sedimentary sequences important to uranium mineralization in the area. The B-Zone property is located within the Heggart Lake Formation of the 1.6 Ga Bruce River Group.
The B-Zone Deposit is underlain by the Heggart Lake Formation, a massive sandstone with interbedded conglomerate. Locally, it is variably-altered, strongly-silicified, and hematized to a maroon-red colour. Heggart Lake sandstones are cut by a number of north-striking, easterly-dipping, grey to green diabase dikes, which are spatially associated with (and probably temporally equivalent to) the Henri Lake gabbro that intrudes the Heggart Lake Formation and outcrops to the west of B-Zone mineralization.
At the B-Zone Deposit, epigenetic uranium mineralization occurs in the sedimentary rocks of the Heggart Lake Formation, notably in fractures filled by chlorite and quartz ± carbonate veining and/or minor breccia. A suite of altered intrusive rocks, typically mafic and dike-like, also host uranium and vanadium mineralization, especially near their contacts.
Preliminary studies show that vanadium is correlated with copper mineralization, with up to 0.53% V2O5. Most samples contain minor quantities of sulphide, but there are several samples that exhibit 1% to 2% pyrite and chalcopyrite. Pyrite, chalcopyrite, bornite and chalcocite mineralization are spatially associated with the chlorite-magnetite alteration. Limited petrographic examination suggests that the main uranium mineral present at the B-Zone is brannerite (UTi2O).
1957
British Newfoundland Exploration discovers the B-Zone and performs trenching, sampling, scintillometer surveying, and 22 metres of diamond drilling over three drill holes
1976
Shell Canada reports significant uranium mineralization (e.g., 0.11% U3O8, 7.76 g/t Ag and 0.15% Cu over 24.8 meters from trenches) in the B-Zone within anorthositic rock, later performing a magnetometer survey
1977
Shell Canada performs mapping, trenching, till sampling, and 864 metres of diamond drilling over 16 drill holes with highlights including 0.106% U3O8 over 7.02 meters from drill hole 3794S-2, starting at a down hole depth of 34.96 meters
2005
Crosshair Exploration & Mining Corporation (“Crosshair”) commissions high-resolution radiometric and magnetic surveying
2006
Crosshair performs prospecting, geological mapping, scintillometer surveying, trenching, ground-based gravity surveying and 1,567 metres of diamond drilling over 15 drill holes, including intercepts of 7.56 metres of 0.269% U3O8 in BZ-01, and 9.44 metres of 0.10% U3O8 in BZ-02
2007
Crosshair completes airborne EM and ground resistivity and IP, alpha-track surveying, and 1,839 metres of diamond drilling over 10 drill holes, highlighting 0.235% U3O8 over 3.50 metres in BZ-15
British Newfoundland Exploration discovers the B-Zone and performs trenching, sampling, scintillometer surveying, and 22 metres of diamond drilling over three drill holes
Shell Canada reports significant uranium mineralization (e.g., 0.11% U3O8, 7.76 g/t Ag and 0.15% Cu over 24.8 meters from trenches) in the B-Zone within anorthositic rock, later performing a magnetometer survey
Shell Canada performs mapping, trenching, till sampling, and 864 metres of diamond drilling over 16 drill holes with highlights including 0.106% U3O8 over 7.02 meters from drill hole 3794S-2, starting at a down hole depth of 34.96 meters
Crosshair Exploration & Mining Corporation (“Crosshair”) commissions high-resolution radiometric and magnetic surveying
Crosshair performs prospecting, geological mapping, scintillometer surveying, trenching, ground-based gravity surveying and 1,567 metres of diamond drilling over 15 drill holes, including intercepts of 7.56 metres of 0.269% U3O8 in BZ-01, and 9.44 metres of 0.10% U3O8 in BZ-02
Crosshair completes airborne EM and ground resistivity and IP, alpha-track surveying, and 1,839 metres of diamond drilling over 10 drill holes, highlighting 0.235% U3O8 over 3.50 metres in BZ-15