Redstone Resources Limited (ASX: RDS) has commenced its reconnaissance exploration programme on the Attwood Lake Lithium Project in Ontario, Canada.
The company has engaged APEX Geoscience to carry out a helicopter‐supported geological mapping and sampling programme for lithium (Li) and rare‐earth elements (REE) bearing pegmatites. The APEX crew has mobilised to Pickle Lake where it will undertake the Stage 1 initial programme.
The Attwood Lake Lithium Project is located in northern Ontario and consists of 17 contiguous claims totalling 7,416 hectares. The Project is underlain by a folded sequence of metasediments and muscovite‐bearing granites of the Archean English River subprovince. The Project lies in close proximity to and partially overlaps the boundary between the Uchi and English River Terranes.
Notably, all major lithium deposits found in this region are located in close proximity (<20 km) to a Terrane boundary. The Archean Terrane boundaries, as well as the associated faults and folds, act as conduits and pathways for fertile parental magmatic melts and late‐stage pegmatite‐ forming fluids.
Historical exploration work surrounding the Project area includes a diamond drill program targeting massive sulphide mineralization completed in 2004 for East West Resources Corp. on claims directly NW of the Project. The programme consisted of seven drillholes, five of which encountered pegmatite intervals of up to approximately 70m (core‐length). Pegmatite intervals were not assayed for Li or REE.
In 2016, a reconnaissance mapping programme carried out by the Ontario Geological Survey (OGS) resulted in the identification of numerous pegmatite occurrences in outcrop north of Attwood Lake.
The OGS survey did not cover the Project area. Many of the pegmatitic rock samples were collected within the metasedimentary rock unit which extends throughout Attwood Lake. Several of these pegmatite occurrences were mapped in proximity to a regional northeast‐southwest oriented fold axis which extends southwest through the western portion of Attwood Lake
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