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WA-focused gold explorer, Kalgoorlie Gold Mining (ASX:KAL) (‘KalGold’ or ‘the Company’), is pleased to announce the first JORC (2012) Mineral Resource at the La Mascotte gold deposit within the Bulong Taurus project, 35km to the east of Kalgoorlie-Boulder.
Highlights
- La Mascotte is one of the few outcropping gold deposits in the Eastern Goldfields
- First ever La Mascotte JORC (2012) Inferred Mineral Resource Estimate of:
- 3.61 Mt @ 1.19 g/t Au for 138,000 oz (0.6 g/t cut-off)
- Resource is estimated above the 220 mRL, or to a depth of ~140 m below surface on a granted mining lease
- Modelled resource footprint measures 700 m north-south by 500 m east-west, with multiple stacked mineralised horizons demonstrating a total sectional thickness of up to ~175 m
- Mineralisation remains open below 220 mRL at several target areas
- Potential for significant resource growth and upgrade with additional drilling
- KalGold direct expenditure cost of only ~A$5 per gold ounce (including drilling and assays)
The JORC (2012) Mineral Resource Estimate at La Mascotte has been estimated at:
3.61 Mt @ 1.19 g/t Au for 138,000 oz at a 0.6 g/t cut-off (Inferred).
This includes a higher-grade component of 1.35 Mt @ 1.92 g/t Au for 83,000 oz at a 1.0 g/t cut-off.
KalGold Managing Director and CEO Matt Painter said:
“The definition of 138,000 oz of gold from surface only 35km east of Kalgoorlie Boulder is a major milestone in KalGold’s short history. It reinforces our objective of discovering and defining gold resources in the Eastern Goldfields of Western Australia.
“La Mascotte is one of the few remaining outcropping gold deposits in the Eastern Goldfields. This initial JORC (2012) Mineral Resource Estimate highlights our cost-efficient approach to building a mineral resource base and strengthens KalGold’s credentials as a highly effective gold discovery company. For example, the incorporation of historic drill data into this JORC (2012) Mineral Resource Estimate has saved the Company $1.6 million in drilling-related costs, delivering a realised discovery cost of only $5/oz.
“With gold mineralisation remaining open at depth, KalGold will progress the La Mascotte mineral resource with additional work. We look forward to updating investors on our progress throughout CY2023.”
The La Mascotte Gold Deposit
The La Mascotte gold deposit is one of the few remaining outcropping gold deposits near Kalgoorlie- Boulder in the Eastern Goldfields of Western Australia. Located less than 35km east of the city on the sealed Bulong Road, the deposit can be accessed within 30 minutes’ drive from Kalgoorlie.
Figure 1 – Location map, showing the La Mascotte deposit 35km east of Kalgoorlie and gold plants nearby. Projection GDA94 MGA Zone 51.
La Mascotte is located within the (historic gold rush era) Taurus Goldfield, immediately to the east of the Bulong Goldfield. Geologically, the deposit is hosted by a deformed, metamorphosed, felsic-intermediate volcanosedimentary sequence locally intruded by ultramafic to felsic porphyry pods and dykes. This sequence is juxtaposed against a nickel-mineralised ultramafic sequence to the west and north. Separating these sequences is the regionally extensive, deformed Goddard Fault. KalGold believes this fault to be the controlling structure for gold mineralisation throughout the Taurus Goldfield. Further south along strike, this hosts the high-grade Daisy Milano gold mine operations in the Mt Monger Goldfield.
Although outcrop at La Mascotte is poor, gold-mineralised quartz veining and altered felsic-intermediate volcaniclastic rocks are evident as subcrop and float over several hundred metres (Figure 3). Gold nuggets have also been recovered by our prospector partners over the area (Figure 4). Furthermore, shallow excavations in these areas exhibit a prevailing shallow westerly dip of strata, foliation, and veining.
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Horizon Minerals
Investor Insight
Horizon Minerals’ near-term cash-flow potential and its significant land package in the prolific Western Australian goldfields with considerable exploration upside position the company to positively leverage the current bull gold market opportunity.
Overview
Horizon Minerals (ASX:HRZ) is an ASX-listed emerging mid-tier gold mining company focusing on a portfolio of highly promising gold projects located in the world-class Western Australian goldfields. The recent merger with Greenstone has added nearly 0.5 million ounces (Moz) of high-grade resource to Horizon, taking its total tally to 1.8 Moz, and resulted in Horizon Minerals total land package of 939 sq km in the Kalgoorlie-Coolgardie district.
The Greenstone merger brings near-term cash-generating opportunities and adds greater scale to its baseload assets (Boorara) with the high-grade Burbanks deposit. Horizon’s dual-track strategy involves generating immediate cash flows by leveraging a pipeline of development-ready production assets and concurrently advancing the cornerstone assets, Boorara and Burbanks, which have a combined resource inventory of 914 koz at 1.7 grams per ton (g/t) gold with potential to support a profitable, long-life operation.
The recent ore sale agreement with Paddington Gold is encouraging and increases confidence in the management’s ability to generate near-term cash flows. Under the agreement, 1.4 million (Mt) will be processed over a period of 22 months. The agreement allows Horizon to capitalize on high gold prices to generate significant cash flows.
Horizon is also progressing with other projects, including the Cannon gold project and Penny’s Find underground mine, and actively exploring for new discoveries in the Western Australian Goldfields, targeting gold and other commodities such as nickel-cobalt, silver-zinc, PGEs and lithium across its extensive land holdings. Additionally, Horizon holds a significant stake in one of the world’s largest vanadium projects via its investment in Richmond Vanadium Technology, which is listed on the ASX.
Horizon proposes to acquire 100 percent of Poseidon via an all-scrip transaction for AU$30 million to consolidate 1.8Moz gold and highly strategic processing infrastructure for Horizon to transition to the next standalone WA gold producer. The acquisition will combine Horizon’s large gold resource and Poseidon’s Black Swan processing infrastructure in the Kalgoorlie-Coolgardie districts. The transaction will further result in substantial resource base and regional tenure to a combined JORC mineral resources of ~1.8Moz gold at an average grade of 1.84g/t gold and 422,700t nickel at an average grade of 1 percent nickel. Horizon and Poseidon will have a total of 1,309 sq. km. tenure in an attractive geological position in the WA Goldfields.
Horizon aims to become a sustainable, 100kozpa standalone producer following the merger and conversion and recommissioning of the Black Swan processing plant. The 2.2Mtpa processing facility is strategically located 40 km north of Kalgoorlie with a concentrator readily amenable to processing gold through cost-effective refurbishment and the addition of a new CIL circuit.
Horizon's 30Mt existing gold resources, with 50,000 metres of drilling fully funded to commence drilling in 2025 or 2026, strongly support the conversion of the Black Swan processing plant to a gold plant.
Company Highlights
- Horizon Minerals is an emerging mid-tier gold producer with an extensive portfolio of highly promising gold projects located in the world-class Western Australian goldfields.
- The recently completed merger with Greenstone Resources positions Horizon as a mid-tier gold producer in the Western Australian Goldfields. The combined entity enhanced Horizon’s portfolio with two complementary cornerstone gold assets — Burbanks and Boorara (combined resource of 914,000 oz).
- Mineral resource updates after the merger include 1.8Moz gold, 20.2Moz silver, 104kt zinc, 283kt nickel, 40.5kt cobalt and 296.2kt manganese.
- Changes to the gold MREs include:
- Addition of 297,650oz from Burbanks open pit
- Addition of 167,920oz from Burbanks underground
- Addition of 13,000oz from Pinner
- Addition of 3,000oz from Monument
- Reduction of 20,240oz from Boorara
- Horizon has announced a proposed merger with Poseidon Nickel Limited with Horizon having in ground gold assets that can be processed, and Poseidon having processing facilities including the Black Swan plant, which Horizon proposed to refurbish and repurpose from a concentrator into a gold CIL plant.
- Open pit mining has commenced at the Boorara gold project in August 2024 and the first ore was exposed and mined in late September 2024, with first ore being delivered to the Paddington mill for processing.
- Horizon also recently commenced mining at its recently acquired Phillips Find project with ore to be processed at the Greenfields mill near Coolgardie from February to June 2025.
- Horizon is also progressing with other projects, including the Cannon and Penny’s Find underground mines.
- Amidst the current record gold prices, Horizon seeks to capitalize on this opportunity by advancing its substantial resource endowment towards development, thereby generating cash flow.
Key Projects
Boorara Gold Project
The Boorara gold project is located 15 km east of Kalgoorlie-Boulder in the Western Australian goldfields. Over the past decade, a substantial amount of reverse circulation and diamond drilling has been carried out at Boorara. The project includes a JORC 2012 mineral resource estimate (MRE) by Optiro (now Snowden Optiro), which reported a total of 10.53 Mt grading at 1.26 g/t gold, amounting to 448,000 ounces.
The company views Boorara as a substantial baseload feed source that could be enhanced by lower tonnage, higher-grade feed to sustain a standalone milling facility. This is where the recent acquisition of Greenstone becomes important. Boorara can be supplemented by higher-grade feed from Greenstone’s Burbanks deposit to support an integrated operation.
The Independent JORC (2012) Ore Reserve for Boorara, completed by AMC Consultants, shows a financially viable project highlighted by an open pit mine design producing 1.24 Mt at a fully diluted grade of 1.24 g/t gold for 49.5 koz over an approximate 14-month mine life, and ore sale agreement at 92.5 percent metallurgical recovery produces 45.8 koz recovered.
Boorara commenced open pit mining in August 2024, with the first ore exposed and mined in late September 2024. Mining at the site will occur over 14 months and processing over 19 months at Norton Gold Fields’ Paddington plant to generate $30 million in estimated free cashflow at a AU$3,600/oz gold price.
Phillips Find Gold Project
The Phillips Find gold project is located 45 km north-west of Coolgaride, Western Australia in the heart of the Western Australian goldfields covering 10 kilometres of strike over prospective greenstone stratigraphy. The project includes the Phillips Find Mining Centre (PFMC) where approximately 33,000 ounces of gold were produced between 1998. A joint venture (JV) agreement is in place with mining specialists BML Ventures Pty Limited (BML) to develop and mine two open pits at Phillips Find. Horizon Minerals plans to commence the grade control program early in December and the first mining of ore in December 2024. The first ore from Phillips Find is on track to be treated at FMR’s Greenfields mill from February 2025 to June 2025
Nimbus Silver-Zinc Project
The 100 percent owned Nimbus silver-zinc-lead-gold deposit is located 15 kilometres east of Kalgoorlie-Boulder in Western Australia within the Kalgoorlie Terrane. The project's current mineral resource estimate (JORC 2012) includes 12.1 million tons at 52 g/t silver, 0.2 g/t gold and 0.9 percent zinc containing 20.2 million oz of silver, 78,000 oz of gold and 104,000 tons of zinc using lower cut-off grades of 12 ppm for silver, 0.5 percent for zinc and 0.3 g/t for gold over a 2 metre down hole composite. Within this global resource, the Nimbus project has a high-grade silver and zinc resource of 255,898 tons at 773 g/t silver and 13 percent zinc.
A concept study has confirmed the optimal economic development pathway by mining the higher-grade lodes and generation of a silver/zinc concentrate. A programme of work (POW) has been approved and drilling to test the exploration target is expected to be undertaken in the first half of 2025. The Nimbus project is 2 km east of Horizon's cornerstone Boorara project and 6.5 km north-northwest of Golden Ridge, both historic gold mining centres.
Burbanks Gold Project
The Burbanks gold project is situated 9 km southeast of Coolgardie, Western Australia. The project encompasses the Burbanks Mining Centre and more than 5 kilometers of the highly promising Burbanks Shear Zone, historically the most significant gold-producing structure within the Coolgardie Goldfield. Previous underground production at Burbanks has surpassed 420,000 oz to date.
Burbanks currently hosts a total resource of 6.1 Mt @ 2.4 g/t gold for 466 koz, including underground of 1.2 Mt @ 4.4 g/t gold for 168 koz. Burbanks is underexplored and remains open in all directions for future growth.
Cannon Underground Project
The Cannon gold project is located 30 km east-southeast of Kalgoorlie-Boulder. It is a fully permitted project with a pre-feasibility study completed in 2022, which shows strong project economics with a free cash flow of AU$10.1 million over the mine's life. The company has finished commissioning a dewatering pipeline and a pumping system, representing a major milestone in the advancement of its Cannon Underground project. Discussions with mining contractors and potential JV mining partners are underway. First ore production from the Cannon Project is expected to commence in Q4 2024.
Penny’s Find
Penny’s Find is about 50 km northeast of Kalgoorlie in the Eastern Goldfields of Western Australia, near the company’s wholly-owned Kalpini gold project. It comprises a granted mining lease and other associated leases covering 91 hectares. The mineral resource estimate updated in December 2023 boasts 63,000 ounces of gold in the indicated and inferred category. A pre-feasibility study for exploitation using underground mining methods is currently underway. This study will include mine design and financial analysis.
Rose Hill
Rose Hill is 0.5 km southeast of Coolgardie and 35 km west of Kalgoorlie-Boulder, on the western edge of the Archean Norseman-Menzies Greenstone Belt. The current JORC 2012 resource at Rose Hill contains 93,300 oz , comprising an open-pit mineral resource of 0.3 Mt grading 2.0 g/t gold for 18,400 oz, and an underground mineral resource of 0.5 Mt grading 4.6 g/t gold for 74,900 oz. Nearly 70 percent of the resource is in the measured and indicated JORC categories.
Kalgoorlie Regional
Horizon owns several promising tenements within the Kalgoorlie region. These project areas include the greater Boorara-Cannon project area, Lakewood, Binduli-Teal project area, Kalpini, Balagundi-Kanowna South and Black Flag.
Coolgardie Regional
Horizon manages several promising tenements within the Coolgardie region, including Rose Hill, Brilliant North and Yarmany.
Management Team
Ashok Parekh – Non-executive Chairman
Ashok Parekh has over 33 years of experience advising mining companies and service providers in the mining industry. He has spent many years negotiating mining deals with publicly listed companies and prospectors, leading to new IPOs and the initiation of new gold mining operations. Additionally, he has been involved in managing gold mining and milling companies in the Kalgoorlie region, where he has served as managing director for some of these firms. Parekh is well-known in the West Australian mining industry and has a highly successful background in owning numerous businesses in the Goldfields. He was the executive chairman of ASX-listed A1 Consolidated Gold (ASX:AYC) from 2011 to 2014. He is a chartered accountant.
Warren Hallam - Non-executive Director
Warren Hallam is currently a non-executive director of St Barbara Limited and Poseidon Nickel Limited, and non-executive chairman of Kingfisher Mining Limited. Hallam has a built a strong track record over 35 years in operations, corporate and senior leadership roles across multiple commodities. This includes previous Managing Director roles at Metals X Limited, Millenium Metals Limited and Capricorn Metals Limited. Hallam is a metallurgist with a Master in Mineral Economics from Curtin University.
Grant Haywood – Managing Director and Chief Executive Officer
Grant Haywood brings over three decades of experience in both underground and open-cut mining operations. During his career, he has served in senior leadership capacities in various mining companies, guiding them from feasibility through to development and operations. His experience spans various roles within junior and multinational gold mining companies, predominantly in the Western Australian goldfields, including positions at Phoenix Gold, Saracen Mineral Holdings, and Gold Fields. He is a graduate of the Western Australian School of Mines (WASM) and has also earned a Masters in Mineral Economics from the same institution.
Julian Tambyrajah – Chief Financial Officer & Company Secretary
Julian Tambyrajah is an accomplished global mining finance executive with more than 25 years of industry expertise. He is a certified public accountant and chartered company secretary. He has served as CFO of several listed companies including Central Petroleum (CTP), Crescent Gold (CRE), Rusina Mining NL, DRDGold, and Dome Resources NL. He has extensive experience in capital raising, some of which includes raising US$49 million for BMC UK, AU$122 million for Crescent Gold and AU$105 million for Central Petroleum.
Stephen Guy – Chief Geologist
Stephen Guy is a geologist with over 25 years of experience in the mining industry, specialising in exploration, production, and project start-ups for both open pit and underground operations. His career spans key regions in Australia, including Western Australia, New South Wales, and Queensland, where he has collaborated with leading companies such as BHP, Newcrest, St Barbara Gold, Fortescue Metals Group (FMG), and Gindalbie Metals. Guy’s expertise covers a diverse range of commodities, including gold, copper, nickel, base metals, and iron ore.