Ann: High-Grade Lithium Confirmed at Mt Alexander, page-2

12 October 2022
HIGH-GRADE LITHIUM – UP TO 2.7% Li2O – CONFIRMED AT MT ALEXANDER
High-grade lithium confirmed in rock chip samples as ongoing field mapping identifies a
significant extension of the outcropping pegmatites containing visible lithium minerals
HIGHLIGHTS
High-grade assays for rock chip samples from Mt Alexander:
• High-grade lithium mineralisation has been returned in assays for the first batch of 10
selective rock chip samples submitted for laboratory assay:
◆ MARK152-2: 1.97% Li2O, 715ppm Cs, 166ppm Ta2O5 and 13,765ppm Rb
◆ MARK263: 1.15% Li2O, 211 ppm Cs, 51ppm Ta2O5 and 5,825ppm Rb
◆ MARK267: 1.68% Li2O, 164ppm Cs, 104ppm Ta2O5 and 7,700ppm Rb
◆ MARK268: 2.72% Li2O, 756ppm Cs, 60ppm Ta2O5 and 11,530ppm Rb
• These high-grade lithium results occur within several stacked pegmatite dykes in a
north-south zone extending up to 1.7km, named the Jailbreak Lithium Prospect
• The strong caesium (Cs), tantalum (Ta) and rubidium (Rb) values are also highly
encouraging as they can be associated with significant lithium deposits at depth
• Ongoing field mapping and sampling have extended the interpreted east-west strike
length of visible lithium-bearing pegmatites at Jailbreak from 400m up to 1.4km
Outstanding lithium prospectivity across the broader Mt Alexander project tenure:
• More than 100 additional pegmatite samples from the interpreted 15km north-south
LCT corridor within the project area (Figure 1) have been submitted for assay
• These pegmatite samples occur on two Exploration Licences – E29/638 (75% St George:
25% IGO) and E29/962 (100% St George)
• Field mapping is continuing at Jailbreak where multiple pegmatite outcrops with visual
lithium-bearing minerals are now identified up to 1km west of current assay results
• Significantly, mineralised pegmatites do not appear to be constrained to the ultramafic
unit at Jailbreak opening up wider potential along the 15km corridor (Figure 2)
Soil survey completed:
• Soil survey completed over a large area of E29/962 where cover may mask extensions
of pegmatite outcrops trending towards the Copperfield Granite
• Potential to further expand the area of pegmatites with soil assays pending
Drilling to commence:
• Maiden lithium drilling scheduled to commence in late October/early November


John Prineas, St George Mining’s Executive Chairman, said:
“We are delighted that our visual interpretation of lithium-bearing pegmatites has been confirmed as
accurate by the first batch of laboratory assays.
“The high-grade lithium assays are from pegmatite outcrops spread over a 1.7km zone at Jailbreak
within a 15km long interpreted lithium, caesium and tantalum (LCT) corridor where numerous
pegmatites at Mt Alexander have been mapped to date.
“The grades and scale we are seeing appears to confirm that we are exploring a highly prospective
pegmatite hosted lithium mineral system in its early stage of evaluation.
“Our lithium bearing pegmatites are located in the same corridor parallel to the Copperfield Granite
where Red Dirt Metals(ASX: RDT) has announced significant lithium discoveries and flagged a pending
maiden mineral resource. Zenith Minerals (ASX: ZNC) has also announced on 11 October 2022 the
commencement of drilling of prospective pegmatites at its Mt Ida North Lithium Project, north-east
of our lithium-bearing pegmatites.
“Further north of Mt Alexander, and also adjacent to the craton scale Mt Ida fault, is Liontown’s (ASX:
LTR) large Kathleen Valley lithium deposit which has a mineral resource of 156Mt @ 1.4% Li2O and
130ppm Ta2O5.
“We are in a very good address and look forward to commencing our maiden lithium drill programme
later this quarter.
“The fast-emerging lithium potential at Mt Alexander perfectly complements our continued search for
more high-grade nickel-copper-PGE sulphide discoveries, which will also involve a drill campaign this
quarter.