Portofino Reports Geological Team Mobilized to Allison Lake North Lithium Project
PORTOFINO RESOURCES INC. (TSXV: POR) (OTCQB: PFFOF) (FSE: POTA) ("Portofino" or the "Company") is pleased to announce that its geological team has mobilized to the Allison Lake North property to follow-up on the Company's 2021 channel and grab sampling programs that reported encouraging values of up to 412 ppm lithium and 1040 ppm rubidium.
Recently completed high-resolution magnetic heli-borne survey results (NR-Sept 15, 2022) combined with Portofino's previous sampling and mapping efforts will be instrumental in guiding this phase of ground prospecting, sampling and identification of mineralization typically associated with lithium-bearing pegmatites. Exploration efforts will focus on the outer edges of the Allison Lake Batholith where it comes in contact with the Jubilee Lake metasediments. Metasediments make excellent hosts for rare-element pegmatites containing Lithium, Cesium and Tantalum minerals ("LCT").
The Company's geological crew led by Emerald Geological Services (EGS) is encouraged by what has been encountered in the field thus far this month. Grey pegmatites in contact with metasediments have been discovered containing key indicator minerals of garnet and tourmaline typical of LCT-pegmatites (Figure 1).
Portofino's previous sampling programs in 2021 returned anomalous rare-element results within the LCT Goldilocks Zone, a fractionation corridor outlined by Green Technology Metals (Figure 2) believed to be a zone ideal for the location of Li-mineralization such as the SJ Pegmatite. The SJ Pegmatite discovered in 1964 by Stan Johnson lies only 1.5 kilometres east of Portofino's southern claim group. This occurrence represents the largest known pegmatite outcrop in the Jubilee Lake metasediments and within the LCT Goldilocks Zone covering an exposed area of 30 x 35 metres. Sampling of the SJ Pegmatite by the Ontario Geological Survey ("OGS") in 2003 returned highly anomalous Li (140 ppm), Cs (47 ppm), Ta (173 ppm), Nb (462 ppm) and Rb (1227 ppm).
Portofino's CEO, David Tafel comments: "The high-resolution magnetic survey completed this summer outlined priority prospecting and sampling areas to focus on this fall. Over the past week our team has uncovered and sampled additional pegmatite outcrops and we are looking forward to seeing the lab assay results from this sampling. New claims that we added following last year's field season are also being explored by Portofino for the first time and we are excited about the newly discovered prospects of this ground."
Figure 1. Field mapping photo's taken by EGS. A) Bands of red garnets in pegmatite. B) Grey pegmatite in contact with Jubilee metasediments. C) Grey pegmatite dyke. D) Tourmaline crystals within a white pegmatite.
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Figure 2. Fractionation trends and sampling within the Allison Lake Batholith from Green Technology Metals. (Modified to include Portofino's claims and 2021 sampling results).
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About The Allison Lake North Property
The Allison Lake North Property comprises 7 claims totaling 2,286 hectares and is located 100 kilometres east of the town of Red Lake in northwestern Ontario. Numerous lithium deposits have been delineated in northwestern Ontario and host significant reserves of lithium oxide- Li2O. The Property is accessible by well-established logging roads and a hydro-electric power line transects the claim group. The Property contains significant attributes that are key to the formation of lithium-bearing pegmatite dykes. It is positioned along the contact between the Allison Lake pegmatite granite batholith and the Jubilee Lake metasedimentary rocks of the Uchi Subprovince in northwestern Ontario. This important contact is now fully staked and subject to active exploration by multiple companies.
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