Three separate claim blocks are located in the under explored Lang Lake Greenstone Belt, centered approximately 80km west of Pickle Lake, Ontario. These three blocks include 1) McVicar East, 2) Lang Lake and 3) Cannon Lake. Each host several early-stage gold and base metal targets that have been identified based on the presence of shear zones and structural corridors that cut through favourable rock types.
The Lang Lake belt is part of an extensive Archean greenstone belt system that extends easterly from Red Lake to Pickle Lake. Despite many geological and structural similarities with these regions, Lang Lake appears to have seen far less gold exploration. The Ontario Geological Survey (OGS) had recognized that Lang Lake has largely been overlooked by the industry and completed a mapping and mineral occurrence study in 2014 in hopes of generating renewed exploration activity (OGS Maps 3974/75). These map products helped shed new light on the opportunities in the area and proved very useful to the Cross River technical group when prioritizing these acquisitions. Cross River will continue with archival research over the winter of 2020 and intends to acquire high resolution LIDAR data in 2021 in order to aid with ongoing structural interpretations. Ground truthing of specific targets is expected to begin in the summer of 2021.
McVicar East Property
Previous work by BHP Minerals (1986-1993) identified two significant gold occurrences in this area: The Altered Zone and North Flexure Zone (Occurrence Index 52O11SW12). Mineralization at these sites is associated with sericite and carbonate alteration accompanied by quartz veining. BHP drilled 16 diamond drill holes on the Altered Zone in 1987 with significant drill results including 33.0 g/t Au over 1.86m from hole ML-87-27. Other results include 5.0 g/t Au over 2.74m from hole ML-87-02 and 8.6 g/t Au over 1.4m from hole ML-87-20. The North Flexure Zone is located 750m from the Altered Zone and they are likely associated with the same shear system. Notable drill results from this zone include 9.3 g/t Au over 2.02m from hole ML-91-54. A summary table of all previous drill results are available in Assessment Report 52O11 SW 2003.
The majority of the exploration and drilling history at McVicar East was completed in the early 1990’s however, high-resolution airborne magnetic data was not acquired until 2011 (Geo Data Solutions report for Wildcat Exploration). This data does not appear have been fully utilized for regional structural targeting exercises and re-interpretation of hard copies of this airborne data by Cross River has revealed several potential structural splay zones associated with the Altered and North Flexure Zones, suggesting opportunities for new discoveries along trend and also parallel to these previously known occurrences.
The technical content disclosed in this website was reviewed and approved by Dr. Rob Carpenter, P.Geo., Ph.D., a Qualified Person as defined under National Instrument 43-101. Dr. Carpenter is independent of the Company.
Lang Lake Property
The Lang Lake claim block is located approximately 15km west of the McVicar East claims and was acquired due to proximity to the regionally significant Bear Head Shear Zone (BHSZ). The claim block has seen extensive copper exploration dating from the 1960’s however, the BHSZ appears to have been largely overlooked as a host for gold mineralization despite the presence of favourable rock types such as banded iron formation.
Cannon Lake Property
The Cannon Lake target is located approximately 10km east of the McVicar East block has no reported exploration history. The prospect was staked based on mapping data published by the OGS in 2014 which identified significant quartz veining and iron carbonate alteration in previously unknown shear zones. These shears trace along a major first-order greenstone-sediment contact zone. This is a highly favourable environment for gold mineralization in Archean rocks worldwide and represents a newly generated target in the belt.