• 153 Claims covering 85 km,100% owned, no NSR
  • 55 km NNE of Lebel-sur-Quévillon
  • Accessed by a network of well maintained forestry roads some of which join provincial highway 113 connecting Lebel-sur-Quévillion with Chibougamau.
  • 8 km south of Iserhoff, Mosaic Minerals’ Lithium SM property exposes lithium-bearing pegmatites
  • Favorable geology for the discovery of lithium-bearing pegmatites (Volcanic rocks/greenstone belt)
  • No previous work looking at assessing the lithium potential of the property


The property is underlain by the Imbault Formation constituted of basaltic flow-derived schists, intermediate amphibolite rocks and metamorphosed felsic volcanic rocks. The formation rests on the Bell River volcanic rocks and is overlain by the Taibi Group metasedimentary rocks. The latter consists of an assemblage of turbiditic mudrocks, greywacke often separated from other units by shear zones. The rocks are highly deformed and metamorphosed to the amphibolite grade.


Iserhoff was acquired in view of the encouraging drill results obtained in 1955 by O’Brien Gold Mines Limited showing five short DDH extending for 3.5 km yielding anomalous gold values, with locally some associated silver, lead and zinc content. Canadian Occidental Petroleum Ltd. later carried out detailed ground geophysical surveys (magnetics and VLF-EM), geological mapping and geochemical humus surveys. In 1994-1995, Phelps Dodge Corporation of Canada established a 54 km grid on the property and completed a 31 line-km IP/resistivity survey. Strong IP anomalies in the central portion of the Iserhoff property are related to narrow (0.5 to 3 m), somewhat discontinuous, bands of massive to semi-massive pyrrhotite and pyrite-rich-rocks which returned low base metal values.

Iserhoff Compilation Map
Download the map (.pdf)

Five historical short drill holes over a 3.5 km strike length returned anomalous gold values :

Drill hole From
# 1 6.1 16.7 10.6 0.62
# 2 7.6
# 3 0 14.5 14.5 1.24
# 4 20.7 21.9 1.2 0.93
# 5 5.8 11.7 5.9 1.24

Quality Assurance and Quality Control (QA/QC)

Genius Metals implemented a strict QA/QC protocol in processing all core, channel, grab, and soil samples collected from all its properties. The protocol included the insertion and monitoring of appropriate reference materials, in this case certified CRM standards, blanks and duplicates, to validate the accuracy and precision of the assay results. All rock samples, including core material, were inserted in sturdy plastic bags, tagged, and sealed in the field or in the core shack. A clean plastic shovel was used to dig through the topmost soil layers and sample the B or C-horizon soil, mostly till material. Commonly, from 1 to 2 kg of soil material was collected, cleaned of coarse pebbles (> 16 mm), put in Kraftpaper or plastic envelopes, stowed, and transported to the camp. For each sample collected; the sample number, UTMcoordinates, and a brief material description were systematically noted. The samples were dried for at least 48h at thecamp. The sample bags containing rock or soil samples then put in rice pouches and kept securely in a field tent before being sent by truck for preparation and analysis to various geochemical laboratories in Canada notably SGS Canada Inc. (“SGS“) or ALS Global (“ALS”)  in Val-D’Or, Quebec. The chain of custody was always under the supervision of professional geologists

At SGS, the resulting pulps form grab samples were analyzed in Burnaby, British Columbia. The gold values were obtained by fire assay with an atomic absorption finish Values over 10 ppm Au were re-analyzed by fire assay with a gravimetry finish. Multi-element analysis was performed using the classical aqua regia ICP-OES technique. Core and grab samples sent to the ALS laboratories were analyzed using the ME-ICP41 package (Aqua regia with AA finish) for 35 elements. Samples having contents > 10 000 ppm Zn and > 100 ppm Ag were re-analyzed by OG-46 method (4 acids). Gold assays were determined by Fire Assay with an atomic absorption finish (method Au-AA2). Finally, soil samples were expedited to the ALS laboratories with 50 g of the < 64 µ sieved fraction analyzed for 53 elements using the combined cyanide and aqua regia digestion and ICP-MS super trace methods (AuME-ST44)