Zoro Lithium Project, Manitoba Canada
The Zoro Lithium Project is located at the east end of the 200 km long and 70 km wide Paleoproterozoic Flin Flon-Snow Lake Greenstone Belt approximately 20 km east of the historic mining town of Snow Lake (Figures 1 and 2). The project consists of 16 claims with a total of 3,603 hectares including the 100%-owned Zoro1 claim, that hosts the primary source of lithium on the property in Dyke 1, and the Green Bay and Manitoba option properties. Foremost holds the rights to 100% of the lithium resources on these properties. Nearby infrastructure includes a power line servicing the town of Snow Lake approximately 5 km south of the property, the Snow Lake airport, and an all-weather gravel road 11 km west of the property, as well as a rail link located at Wekusko Siding, 20 km to the south of Herb Lake Landing which is 30 km south of the property.
The Zoro Lithium Project is underlain by ocean floor volcanic rocks of the Roberts Lake allochthon and lesser amounts of Missi Group sedimentary rocks. The Ocean Floor rocks comprise mafic volcanic and related intrusions and the Missi Group consists of sandstone, siltstone, mudstone, and quartzo-feldspathic gneiss and migmatite. The Ocean Floor mafic volcanic rocks adjacent to the pegmatite dykes consist of a fine to medium-grained strongly foliated dark green lithology. These andesitic to basaltic lithologies are locally interbedded with volcaniclastic sedimentary rocks and all are intruded by a quartz-phyric granite intrusion (Figure 3).
Pegmatite dykes generally strike northwest to north-northwest with steep dips and crosscut the regional foliation at a low angle. The dykes tend to be concentric in internal structure and the grain size of the constituent minerals (potassium feldspar, quartz, spodumene and black tourmaline) coarsens towards the center of the dykes. This pattern may be locally interrupted by patches of saccharoidal albite, large muscovite aggregates and coarse albite stringers with garnet and beryl. Spodumene is concentrated in the cores of the dykes. Some of the dykes have been split into sub-parallel veins by post-emplacement tectonic activity.
Approach to Exploration
Integrated exploration on the project consists of soil and rock geochemical surveys, a drone magnetic survey, prospecting, and mapping all followed-up with diamond drilling. This has led to the discovery of 16 previously unknown spodumene-bearing pegmatite dykes and the delineation of multiple lithium targets. To date, 70 drill holes for 9,915 m have been completed on the property.
Source of Lithium
The principal source of lithium on the property is spodumene-bearing Dyke 1 with an inferred resource of 1,074,567 tonnes at 0.91% Li2O, 182 ppm Be, 198 ppm Cs, 51 ppm Ga, 1212 Rb, and 43 ppm Ta at a 0.3 percent Li2O cut-off .1 Please refer to the Company’s NI 43-101 Technical Report titled “NI 43-101 Technical Report on the Zoro Lithium Project, Snow Lake, Manitoba” dated effective July 6, 2018, prepared by Dr. Mark Fedikow, P. Geo, and Scott Zelligan P. Geo. Tantalum mineralization has also been intersected in Dyke 1 with an assay of 0.113% Ta2O5 (cf. November 1, 2017 news release). Elsewhere on the property assays of 2.42% to 7.28% Li2O have been documented from spodumene-bearing pegmatite Dyke 5 on the property3 (cf. Green Bay Mining and Exploration Ltd. Corporation File).
Preliminary metallurgical testing by SGS Canada Inc. of a spodumene concentrate from Dyke 1 indicates that a high-grade (6% Li2O) lithium concentrate can be produced from Dyke 1 mineralization using industry standard methods.2
In 2022, a ten-hole 1,509-meter drill program was undertaken to test Mobile Metal Ion ("MMI") soil geochemical anomalies and assess the deeper levels of high-grade spodumene pegmatite Dyke 8 discovered in 2018.
The sixteenth spodumene-bearing pegmatite dyke on the Zoro property was discovered during this program. It was intersected by two drill holes (c.f. April 26, 2022, news release). DDH FM22-70 drilled at -50 degrees inclination intersected two pegmatite intercepts totaling 4.9 meters with up to 15% light green spodumene crystal aggregates. A second hole, DDHFM22-70B was drilled at a steeper inclination of -65 degrees to undercut the first pegmatite intersection. This hole intersected a five-meter intercept of the same spodumene mineralized pegmatite as hole FM22-70. The host rock to these pegmatites is a fine-grained foliated basalt. The location of Dyke 16 in relation to all other pegmatite dykes intersected on the Zoro property is illustrated in Figure 4.
High-grade spodumene pegmatite Dyke 8 was discovered on the Zoro property in 2018 by the drill testing of a Mobile Metal Ions soil geochemical anomaly. Drill hole Far18-35 testing the MMI anomaly intersected 36.5 m of spodumene-bearing pegmatite. Assay results from hole FAR18-35 included three separate intercepts of high-grade lithium including 12.3 m of 1.1% Li2O, 4.4 m of 1.2% Li2O, and 2.2 m of 1.5% Li2O (cf. April 26, 2022, news release).
In 2022 DDHFM22-71 was drilled at -65 degrees to undercut the 2018 pegmatite intersections. A 4.5-meter spodumene-bearing pegmatite was intersected between 70.45 and 75.89 meters before being truncated by a fault. This intercept is 37 meters below the previous 2018 drill intercepted Dyke 8 spodumene mineralization. A further pegmatite was intersected below the fault between 84.4 and 86.65 meters.
To date, Dyke 8 has drill indicated dimensions of 120 m in length, 5-15 m in width and has been drilled to a depth of 157 m (cf. April 26, 2022, news release).
Numerous intersections of core intersected mineralized zones characterized by disseminated and veinlet arsenopyrite with lesser chalcopyrite, sphalerite, and pyrite. Mineralized sections were intersected in silicified and variably altered dacite and basalt volcanic rocks with or without quartz veins.
A total of 19 core samples of pegmatite have been collected from drill core. Fourteen samples were collected from pegmatite with visible spodumene, and five samples were collected from pegmatite without visible spodumene. Nine samples were collected from lithologies other than pegmatite. Fifty-seven samples were collected from core mineralized with disseminated and stringer arsenopyrite and lesser pyrite, chalcopyrite, and sphalerite for gold assay.
After logging and photographic recording, all core samples were sawn in half and one half of the core has been shipped to Activation Laboratories (Ancaster, Ontario). Remaining drill core is stored in a secure facility in Snow Lake.
Pegmatite samples will be analysed using UT-7 lithium and related element analysis after total dissolution by sodium pyrophosphate with finish by ICP-MS. Samples for gold assay were undertaken on 30-gram samples with fire assay and finish by Instrumental Neutron Activation.
Results for all samples are pending but will be reported in a news release and on the website once available.
Exploration on the property is ongoing with prospecting, mapping and geochemical surveys following up on a recently completed (June 2022) drone magnetic survey. The drone survey was completed by EarthEx Geophysical Solutions Inc. Interpreted results from the drone magnetic survey will provide the focus for ongoing exploration. A drone-assisted LiDAR survey is planned for the summer of 2022.
1: Fedikow, M.A.F. and Zelligan, S. 2018. NI 43-101 Technical report on the Zoro Lithium Project, Snow Lake, Manitoba ; 188p.
2 : Grammatikopoulos, T., Aghamirian, M., Fedikow, M.A.F. and Mayo, T. 2020 : Mineralogical characterization and preliminary beneficiation of the Zoro Lithium Project, Manitoba, Canada: HTTPS://DOI.ORG/10.1007/S42461-020-00299-2.
3: Green Bay Mining and Exploration Ltd. Corporation File: 1956: Manitoba Mining Recorder, Corporate and Assessment Files.
Figure 1. Location map for the Zoro Lithium Project.
Figure 2: Regional geology map of the Flin Flon-Snow Lake Greenstone Belt and the location of the Zoro Lithium Project.
Figure 3. Geological setting of the Zoro Lithium Project with claim boundaries.
Figure 4. Location of Dyke 16 in relation to previously discovered pegmatite dykes on the Zoro Lithium Project.