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File Created: 14-Mar-2016 by Jessica Norris (JRN)
Last Edit:  25-Mar-2022 by Nicole Barlow (NB)

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NMI
Name NORTH LOBE, BEN, BEAVER Mining Division Cariboo
BCGS Map 093A051
Status Prospect NTS Map 093A12W
Latitude 052º 32' 05'' UTM 10 (NAD 83)
Longitude 121º 58' 59'' Northing 5820989
Easting 568981
Commodities Nickel, Cobalt Deposit Types
Tectonic Belt Intermontane Terrane Quesnel, Cache Creek
Capsule Geology

The North Lobe occurrence is located approximately 52 kilometres north of Williams Lake, and approximately 54 kilometres south-southeast of Quesnel, British Columbia. In the southeast part of the larger Ben property, the North Lobe occurrence is situated between the Mount Polley Mine and the Gibraltar Mine. The Ben property lies on the Fraser Plateau, a flat and gently rolling area mostly covered by glacial drift. The Ben property lies on a northwest trending height of land between the Beedy Creek and Beaver Creek Valleys, two prominent topographic lineaments considered to mark significant faults (Assessment Report 35173).

Situated within the Cache Creek Terrane, the North Lobe occurrence is underlain by rock units of the Permian to Triassic-aged Cache Creek Complex. Noted rock units include marine sedimentary and volcanic rocks including phyllite, siliceous phyllite, ribbon and massive chert, argillite, mudstone, sandstone, limestone, tuff, mafic volcanic rocks, and serpentinite. The area is bounded to the east and to the west by rocks of the Quesnel Terrane. The structural geology of the Ben property is not well understood or documented. The fabric of the underlying sedimentary and volcanic rocks trends north-northwest (Assessment Report 35173).

Although not formally mapped, drilling across the Ben property intersected several zones containing shallow-dipping, variably serpentinized dunites, with lesser peridotites and gabbros. The serpentinite is mostly composed of antigorite and lizardite. Accessory magnetite (up to 10 percent) and chlorite are dispersed within serpentine-rich pseudomorphs and within vein-like domains. The ultramafic rocks occur within interbedded marine sedimentary rocks of the Cache Creek Complex (mudstone, greywacke, sandstone, conglomerate), and volcanic rocks (tuff, dacite, basalt). Alteration styles include serpentinitzation and silicification. Nickel and cobalt mineralization are hosted in variably magnetic serpentinized ultramafic rocks, mostly contained within the nickel-sulphides heazelwoodite and pentlandite, with possible millerite (Assessment Report 35173).

Very limited work was recorded on the North Lobe occurrence until Westhaven Ventures optioned the property from claim owner B.H. Kahlert in 2012. Rock geochemical samples were taken, and one induced polarization line (2 kilometres) was completed (approximately 1 kilometre south) in 2012 (Assessment Report 33544).

In 2014, Westhaven Ventures completed a property wide airborne magnetic survey, consisting of 851 line kilometres, with flight lines oriented east-west and spaced at 200 metre intervals. The North Lobe occurrence was defined by the airborne magnetic survey, and occurs as a 200 to 1000 metre wide, strong, elongated linear anomaly, trending 4.5 kilometres in a northwesterly direction and extends off the property to the southeast. Follow up work at North Lobe included prospecting and soil sampling (Grid D – with the Ring Zone), identifying multiple parallel, northwest-striking zones of anomalous nickel values. Throughout 2014, 3 drill holes (412.03 metres) were completed over two campaigns. Targeting magnetic anomalies, drilling encountered variably serpentinized dunite, shale, mudstone, and silicified volcanic rocks. Nickel mineralization in drill holes BN14-22 and BN14-23 appears to be associated with a 100 metre wide serpentinite body at the top of an ultramafic sequence dipping approximately 45 degrees to the southwest. Results from drilling include 57.7 metres grading 0.21 percent total nickel (0.17 per cent sulphide nickel), and 0.011 per cent cobalt (in BN14-22 from 63.1 to 120.8 metres down hole depth) (Assessment Report 35173).

Bibliography
EMPR ASS RPT 33544, *35173, 35959, 38860, 40133
ERSi Earth Resource Surveys Inc. (2012-03-30): Compilation and Review - Ben Property
Peters, L.J. (2020-06-24): National Instrument 43-101 Technical Report on the Beaver-Lynx Property, BC

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