Murchison’s focus is the Brabant VMS project located 175 kilometres northeast of La Ronge, Saskatchewan. The 430 km2 property contains a high-grade zinc-copper-silver deposit and covers favourable geology, multiple mineralized showings and geophysical conductors over a 57-kilometre strike length.
Five new claim blocks were acquired by staking in November (the Henry series covering 50 km2) while the 56 km2 “M Claim Block” was acquired by staking in December 2019 to cover 12 EM conductors. These new claims will be prospected during the next field season.
The 100%-owned property can be accessed year-round by a provincial highway and is serviced by a power grid. Saskatchewan was ranked the number one mining jurisdiction in Canada and third in the world in the Fraser Institute’s 2018 survey of mining companies.
Lawrence McKenzie, a trapper and prospector from nearby Stanley Mission, was the first to discover mineralization at Brabant Lake in the 1950s. Since then, more than 48,000 metres of drilling have been completed on the property in successive waves of exploration, including a program by Murchison in 2017-2018. The latest drilling was the basis for a NI 43-101 resource estimate for the Brabant-McKenzie deposit.
The Brabant-McKenzie VMS deposit contains an indicated resource of 2.1 million tonnes grading 10% zinc equivalent and an inferred resource of 7.7 million tonnes grading 6.3% zinc equivalent. The deposit remains open for expansion.
A 1,075 line kilometre VTEM survey flown over half the existing property in January 2019 confirmed that the known sulphide-bearing showings are associated with EM conductors and identified multiple new targets. Some of the targets have coincident magnetic anomalies similar to the signature for the Brabant-Mckenzie deposit. The Company substantially increased its land position during and subsequently to the completion of the VTEM airborne survey.
A follow-up prospecting program in mid-2019 identified or confirmed three more areas of mineralization including:
- The Brabant-McKenzie South deposit located 300 metres south of the main deposit.
- The historic MIN showing 4.5 kilometres along strike to the southwest of the main deposit. Channel samples returned 0.32% zinc and 5.3 gpt silver over 1.2 metres and 0.39% zinc and 7.8 gpt silver over 0.35 metres with associated gold.
- The Main Lake West zone located 700 metres west of the Main Lake showing and ten kilometres southwest of Brabant-McKenzie. Backpack drilling intersected semi-massive to massive pyrrhotite and disseminated chalcopyrite grading up to 0.42% copper over 1.7 metres and 0.69% copper over 0.7 metres.
Other drill targets along a 12-kilometre trend interpreted as being the same geological horizon that hosts the Brabant-McKenzie deposit include:
A coincident EM/mag anomaly identified by a 2018 ground survey. The anomaly is associated with mineralized outcrops at surface.
Plate 312.1 m X 399.3 m
A coincident EM/mag anomaly identified by a 2017 ground survey. The anomaly is associated with surface mineralization grading up to 3% copper.
Plate size 232.6 m X 370.5 M
A coincident EM/Mag anomaly identified by a 2012 airborne VTEM survey and confirmed with ground geophysics. The anomaly is associated with mineralized outcrops at surface.
TOM Copper Area
TOM COPPER is located along the interpreted Brabant-McKenzie VMS Trend, approximately 7.5 km southwest of the Brabant-McKenzie deposit.
Brabant South Area
The south area is immediately southwest of TOM2, Brabant South is a complex grouping modelled using VTEM with multiple individual plates. Conductivities range from moderate to high. Sizes also vary significantly. Magnetic coincidence is moderate.
MAIN LAKE SHOWING
Zinc/copper sulphide showing in outcrop, grab samples collected in 2019 assayed up to 6.17% Cu, 8.31% Zn, 140g/t Ag and 0.2 g/t Au Geophysics confirmed multiple EM/mag conductors over a one-kilometre strike length. It has modelled dimensions of 341 m X 108 m with a moderate to high CT of 347 Siemens.
Brabant 3 Anomaly
It was modelled with two plates, both of which are primary targets.
Brabant 3-A has a CT of 294 Siemens with dimensions of 444 m X 260 m with good magnetic high coincidence.
Brabant 3-B has a CT of 395 Siemens with dimensions of 301 m X 47m with good magnetic high coincidence.
Strong parallel EM conductors over more than 800 metres of strike length.
MCIVOR CHANNEL SHOWING
An historic showing with massive sulphide mineralization identified over 600 metres of strike length. The showing is associated with a strong EM/ Mag signature over a one- kilometre strike length. The McIvor Channel A and McIvor Channel B plates have high conductivities of 967 and 268 Siemens, respectively
OTHER POTENTIAL DRILL TARGETS:
A 1.5-kilometre-long EM conductor with associated sulphide mineralization.
An historic showing that returned 6.6% Zn, 36.11% Pb, 0.5% MoS2, 1.4 g/t Au, 160 g/t Ag and trace Cu. Mineralization occurs over a strike length of one kilometre and is associated with a strong EM/ Mag signature over almost two kilometres.
Geology & Mineralization
The Brabant-Mckenzie deposit is associated with the Reindeer Zone of the Early Proterozoic Trans-Hudson Orogen, a collage of juvenile, arc-related crustal domains including La Ronge and Flin Flon. The property lies less than five kilometres east of the McLennan Lake tectonic zone separating the volcanic and intrusive rocks of the La Ronge domain from the amphibolite to granulite facies gneisses of the MacLean Lake belt. It straddles the boundary between the McLennan Group meta-arkoses and the MacLean Lake gneisses.
Property geology consists of biotite gneisses with semi-contiguous bands and intercalated amphibolite and calcsilicate gneisses of the McLennan Group covered by a thick blanket of sediments with limited outcrop. The Brabant-McKenzie deposit occurs within a northeast trending, northwest dipping homocline that may represent the eastern limb of an overturned synform.
Metamorphic VMS mineralization has been traced by drilling over a strike length of about one kilometre and widths ranging up to 18 metres. Pyrrhotite, sphalerite, pyrite, chalcopyrite and galena occur within lenses of disseminated to massive sulphide, sulphide-rich breccias, and veins. Secondary minerals such as covellite, malachite, native copper and colloform pyrite occur within 50 metres of surface. There are two distinct mineralized zones: the Upper Mineralized Zone (UMZ) extending down dip to 1000 metres and the Lower Mineralized Zone (LMZ) extending down dip to 800 metres.
Murchison has selected 12 high priority drill targets from 30 coincident EM/magnetic anomalies identified in the January 2019 airborne VTEM survey and from ground geophysics. Half of these targets lie along a 12-kilometre trend interpreted as being the same geological horizon that hosts the Brabant-McKenzie deposit. Murchison is planning a minimum, 4000-metre drill program to test these targets starting in late January 2020.
Northeast of Brabant Lake and within similar geology, Murchison has recently acquired an additional 5,083 hectares (50.8 km2) of claims in five separate claim blocks located relatively close to Highway 102 (Henry series claim blocks). The claims were staked to cover EM conductors identified in a 2012 VTEM survey available in the public domain. The conductors are coincident with magnetic high trends.
In December 2019 the Company acquired the 56km2 “M Claim Block” located to the East and contiguous to the existing claim blocks already held by Murchison. Twelve EM conductors were identified from an airborne survey completed in 1968. While historical in age, this survey showed remarkable correlation with results obtained in modern VTEM surveys completed in the immediate region. Field prospecting will be undertaken in the next field season.
MURCHISON MINERALS LTD BRABANT-MCKENZIE PROJECT PROPOSED PRIORITY DRILL TARGETS