⚒️ Southern Hemisphere Mining Limited reports its Quarterly Activity for the period ended 30 September 2025.
- Maiden drilling underway at Southern Porphyry with first hole at Target A planned for 1,600m
- Mineral Resource Estimate (MRE) for the Llahuin Copper-Gold Project of 218Mt at an average grade of 0.38% CuEq
- MRE is across three deposits, with strong potential to define further resources (refer new Exploration Target)
Figure 1: Location map of Southern Hemisphere’s Projects in South America.
EXPLORATION ACTIVITIES
Llahuin Copper-Gold-Moly Project
The Company reported a JORC Mineral Resource Es mate (“MRE”) update for its Llahuin Copper-Gold-Molybdenum Project (“Llahuin Project”) in central Chile.
The MRE totals 218Mt at an average grade of 0.38% CuEq (at a 0.22% CuEq cutoff grade) as tabulated below and includes 496,600t of Copper, 654,900oz of Gold and 12,500t of Molybdenum.
Resources are reported above a copper equivalent (CuEq) cut-off grade of 0.22% CuEq. The CuEq calculation is based on metal prices of US$3.50/lb Cu, US$3,000/oz Au, and US$20/lb Mo. No recoveries have been used as metallurgical testwork is still to be optimised. Preliminary metallurgical recoveries from closed circuit flotation testwork confirmed no deleterious elements: Cu 84–91%, Au 41–57%, Mo ~14–56%. CuEq formula: Cu % + (Au g/t × 1.25) + (Mo % × 5.7). The CuEq grade reported reflects relative metal prices only and assumes 100% in situ recovery across all metals. The Company confirms that it is not relying on this assumption as a basis for economic viability but rather to allow comparative assessment of multi-element mineralisation.
Exploration Target
In addition to the current MRE the Company has delineated an Exploration Target of between 260Mt and 340Mt, with grades ranging from 0.20% to 0.30% Cu, 0.08g/t to 0.10g/t Au and 50ppm to 60ppm Mo.
This Exploration Target is exclusive of the current MRE and excludes the Curiosity-Southern Porphyry Target.
For the full details of the MRE upgrade and the Exploration Target (refer to ASX Announcements – Increase JORC Resource – Llahuin Copper-Gold Project, dated 30 July 2025 & Clarification – Metal Recovery Assumptions in CuEq Reporting, dated 1 August 2025).
Figure 2. Exploration target (Blue) and resource shells (Green). MT Targets (pink) (Looking ENE). Grid size 250m x 250m.
Curiosity-Southern Porphyry Target
On 5 August 2025, the Company announced that FMR Resources Limited (ASX: FMR) had completed its technical due diligence to proceed to earn up to a 60% interest in the 4 selected concessions that form the southern portion of the Company’s Llahuin Copper-Gold Project in Chile, including the large Southern Porphyry Copper-Gold Target.
Southern Hemisphere will retain 100% of the northern concessions, which includes the MRE outlined above on page 2. Also excluded is an area comprising the Ferro deposit, Ferro South and the Ferro West Target and any extensions thereof which is to the north of AMAPOLA 1, 1AL300 – RED 1/228.
For the full details on the JV with FMR Resources Limited (refer ASX Announcement – JV – Curiosity Southern Copper Gold Target, dated 16 June 2025).
Figure 3: Southern Hemisphere’s Llahuin Copper-Gold Project (Central, Cerro, Ferro) & JV asset Curiosity Southern Porphyry
During the quarter, FMR Resources Limited conducted geophysical remodelling which confirmed compelling deep drill targets at Curiosity-Southern Porphyry.
The Phase 1 drill program comprising of approximately 4,000m of diamond drilling commenced, the drilling is expected to take 3 months and is designed to provide an initial test of what is interpreted as a large porphyry copper system. The program is designed to test integration of geophysical modelling of magnetics (MAG), magnetoterllurics (MT), and induced polarisation (IP), surface geological mapping and re-logging of historic drillholes.
The first hole at Target A is planned for 1,600m, with capacity for multiple daughter holes. This hole is currently 800m and should be completed in two weeks. Assays results will be reported approximately 4-6 weeks from the completion of each drill hole. (refer ASX Announcement, Maiden Drilling Underway – Southern Porphyry, dated 23 September 2025).
Figure 4: Southern Porphyry Target A
Cardawan Copper Project
The Cardawan licence applications (ELA 52/4433 and ELA 52/4434) are located approximately 160km south of Newman, and the Great Northern Highway runs through the project. The tenements are 169 and 8 blocks size respectively. (Approximately 3km2 per block).
This large copper prospect was pegged during the prior quarter by the Company based on an exploration concept for sedimentary hosted copper deposits. The historic Kumarina Group of copper deposits and prospects are along strike and in adjacent to other tenements to the east of Cardawan. The Abra lead silver mine is 70km west of the Cardawan Copper Project and the DeGrussa VMS copper gold silver mine is approximately 100km south.
Preliminary exploration work is in progress as an early-stage low-cost high impact copper prospect in an excellent location both geologically and strategically.
Sedimentary hosted copper deposits are common in the Zambian copperbelt.
Los Pumas Battery Metals Manganese Project 100%
The Los Pumas Project is an advanced manganese deposit for which Southern Hemisphere is seeking offtake/JV funding/sale for a long life mine to produce:
- Agriculture products for soil improvement;
- Electrolytic Manganese for steel making; and/or
- High-Purity Manganese Sulphate Monohydrate (“HPMSM”) to supply the Electric Vehicle (“EV”) and energy storage markets.
Southern Hemisphere is actively marketing this project, and welcome any inquires to cosec@shmining.com.au
The Full PDF is available below.
LLAHUIN COPPER-GOLD PROJECT
ASX Release – Clarification – Metal Recovery Assumptions in CuEq Reporting – 1 August 2025
ASX Release – Increased JORC Resource – Llahuin Copper-Gold Project – 30 July 2025
ASX Release – Drilling Target Areas Refined at Curiosity-Southern Porphyry – 9 July 2025
CURIOSITY-SOUTHERN PORPHYRY TARGET
ASX Release – Maiden Drilling Underway – Southern Porphyry – 23 September 2025
ASX Release – Southern Porphyry Copper-Llahuin, Drill Targets Finalised – 26 August 2025
ASX Release – FMR JV Partner Announce Update At Llahuin Southern Porphyry – 13 August 2025
ASX Release – FMR Reports Completion of Due Diligence to Proceed with JV – 5 August 2025
LOS PUMAS BATTERY METALS MANGANESE PROJECT
ASX Release – Company Presentation – Los Pumas Manganese Project, Chile – 20 May 2024
ASX Release – Intension to Demerge Battery Minerals Asset – 5 July 2023
CARDAWAN COPPER PROJECT
ASX Release – New Cardawan Copper Project WA – 29 April 2025
COMPETENT PERSON / QUALIFIED PERSON STATEMENT:
The information in this report that relates to copper and gold exploration results for the Company’s Projects is based on information compiled by Mr Adam Anderson, who is a Member of The Australasian Institute of Mining and Metallurgy and The Australian Institute of Geoscientists. Mr Anderson has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration, and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr Anderson is a consultant for the Company and consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
News Release
Date: 28 October 2025 | ASX Code: SUH | Frankfurt Exchange: NK4
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Southern Hemisphere Mining Limited is an experienced minerals explorer in Chile, South America.
Chile is the world’s leading copper producing country and one of the most prospective regions of the world for major new copper discoveries. The Company’s projects include the flagship Llahuin Porphyry Copper-Gold-Moly Project and the Los Pumas Manganese EV Battery Project, both of which were discovered by the Company.
For the latest information about the Company – please visit our Latest News and Corporate Profile pages. We are also on LinkedIn and Twitter (X).
