Could Mineral Resources unlock a new phase of lithium growth through Mt Marion’s underground expansion strategy?
Source: Kapitales Research
Highlights
MinRes approved an AU$490 million expansion program at Mt Marion, combining underground mining and flotation infrastructure development.
Project upgrades are expected to improve spodumene recoveries, increase processing capacity, and transition production toward a higher-quality lithium concentrate stream.
Long-term development plan is designed to access deeper ore zones and materially extend the operational life of the Mt Marion asset.
Mineral Resources Limited (ASX: MIN) edged lower by 0.055%, with its share price declining AU$0.040 to AU$71.490 after the company announced a substantial capital commitment at its Mt Marion lithium operation. The muted market response reflects ongoing investor caution toward large-scale lithium sector investments amid fluctuating spodumene pricing conditions.
Large-Scale Expansion Approved at Mt Marion
Mineral Resources and its joint venture partner Jiangxi Ganfeng Lithium Co Ltd approved a Final Investment Decision to proceed with underground mine development and construction of a flotation processing circuit at Mt Marion. The total investment is estimated at approximately AU$490 million across FY27 and FY28, including underground pre-production works, flotation infrastructure, and supporting operational facilities.
Operational Enhancements Expected Across Production Profile
The project is expected to materially improve operational performance across the lithium asset. Management outlined expectations for processing recoveries to improve toward 70%, while installed spodumene concentrate capacity is projected to rise from around 500ktpa SC6 to approximately 600ktpa SC6. Additionally, the operation is expected to phase out lower-grade SC3.5 material and transition toward a simplified single SC5 product stream.
Underground Mining to Unlock Deeper Ore Potential
The underground development program is aimed at accessing mineralisation beneath the existing open pit, providing long-term resource continuity and supporting mine life extension. From FY28, underground ore sourced through open stoping methods is expected to contribute up to 40% of total plant feed, creating a hybrid operating model combining surface and underground production.
Flotation Circuit Designed to Improve Resource Utilisation
The flotation plant will complement the current dense media separation facility by recovering fine spodumene particles that are currently reporting to tailings. Construction activities are targeted to begin in Q1 FY27, with commissioning and operational ramp-up expected during the second half of FY28. Management further stated that existing operations are anticipated to proceed with limited interruption during the construction period.
Economics Highlight Strong Return Potential
Based on prevailing spodumene prices of approximately US$2,700/t SC6, management estimates the investment could achieve payback in less than one year. To support the expansion, accommodation capacity at the operation will increase from 500 rooms to 750 rooms, reinforcing the scale of the development strategy.
Long-Term Lithium Strategy Remains Central Focus
Management described the project as a high-return brownfield development capable of supporting Mt Marion for decades. Investors are expected to remain focused on project execution, future lithium market pricing dynamics, and the company’s ability to translate expanded production capacity into sustainable long-term earnings growth.
Note- All data presented is based on information available at the time of writing.
Disclaimer for Kapitales Research
The materials provided by Kapitales Research, including articles, news, data, reports, opinions, images, charts, and videos ("Content"), are intended for personal, non-commercial use only. The primary goal of this Content is to educate and inform readers. This Content is not meant to offer financial advice, nor does it include any recommendation or opinion that should be relied upon for making financial decisions. Certain Content on this platform may be sponsored or unsponsored, but it does not serve as a solicitation or endorsement to buy, sell, or hold any securities, nor does it encourage any specific investment activities. Kapitales Research is not authorized to provide investment advice, and we strongly advise users to seek guidance from a qualified financial professional, such as a financial advisor or stockbroker, before making any investment choices. Kapitales Research disclaims all liability for any direct, indirect, incidental, or consequential damages arising from the use of the Content, which is provided without any warranties. The opinions expressed by contributors or guests are their own and do not necessarily reflect the views of Kapitales Research. Media such as images or music used on this platform are either owned by Kapitales Research, sourced through paid subscriptions, or believed to be in the public domain. We have made reasonable efforts to credit sources where appropriate. Kapitales Research does not claim ownership of any third-party media unless explicitly stated otherwise.
Customer Notice:
Nextgen Global Services Pty Ltd trading as Kapitales Research (ABN 89 652 632 561) is a Corporate Authorised Representative (CAR No. 1293674) of Enva Australia Pty Ltd (AFSL 424494). The information contained in this website is general information only. Any advice is general advice only. No consideration has been given or will be given to the individual investment objectives, financial situation or needs of any particular person. The decision to invest or trade and the method selected is a personal decision and involves an inherent level of risk, and you must undertake your own investigations and obtain your own advice regarding the suitability of this product for your circumstances. Please be aware that all trading activity is subject to both profit & loss and may not be suitable for you. The past performance of this product is not and should not be taken as an indication of future performance.
Kapitales Research, Level 13, Suite 1A, 465 Victoria Ave, Chatswood, NSW 2067, Australia | 1800 005 780 | info@kapitales.com.au
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Could Mineral Resources unlock a new phase of lithium growth through Mt Marion’s underground expansion strategy?
Highlights
Mineral Resources Limited (ASX: MIN) edged lower by 0.055%, with its share price declining AU$0.040 to AU$71.490 after the company announced a substantial capital commitment at its Mt Marion lithium operation. The muted market response reflects ongoing investor caution toward large-scale lithium sector investments amid fluctuating spodumene pricing conditions.
Large-Scale Expansion Approved at Mt Marion
Mineral Resources and its joint venture partner Jiangxi Ganfeng Lithium Co Ltd approved a Final Investment Decision to proceed with underground mine development and construction of a flotation processing circuit at Mt Marion. The total investment is estimated at approximately AU$490 million across FY27 and FY28, including underground pre-production works, flotation infrastructure, and supporting operational facilities.
Operational Enhancements Expected Across Production Profile
The project is expected to materially improve operational performance across the lithium asset. Management outlined expectations for processing recoveries to improve toward 70%, while installed spodumene concentrate capacity is projected to rise from around 500ktpa SC6 to approximately 600ktpa SC6. Additionally, the operation is expected to phase out lower-grade SC3.5 material and transition toward a simplified single SC5 product stream.
Underground Mining to Unlock Deeper Ore Potential
The underground development program is aimed at accessing mineralisation beneath the existing open pit, providing long-term resource continuity and supporting mine life extension. From FY28, underground ore sourced through open stoping methods is expected to contribute up to 40% of total plant feed, creating a hybrid operating model combining surface and underground production.
Flotation Circuit Designed to Improve Resource Utilisation
The flotation plant will complement the current dense media separation facility by recovering fine spodumene particles that are currently reporting to tailings. Construction activities are targeted to begin in Q1 FY27, with commissioning and operational ramp-up expected during the second half of FY28. Management further stated that existing operations are anticipated to proceed with limited interruption during the construction period.
Economics Highlight Strong Return Potential
Based on prevailing spodumene prices of approximately US$2,700/t SC6, management estimates the investment could achieve payback in less than one year. To support the expansion, accommodation capacity at the operation will increase from 500 rooms to 750 rooms, reinforcing the scale of the development strategy.
Long-Term Lithium Strategy Remains Central Focus
Management described the project as a high-return brownfield development capable of supporting Mt Marion for decades. Investors are expected to remain focused on project execution, future lithium market pricing dynamics, and the company’s ability to translate expanded production capacity into sustainable long-term earnings growth.
Note- All data presented is based on information available at the time of writing.
Disclaimer for Kapitales Research
The materials provided by Kapitales Research, including articles, news, data, reports, opinions, images, charts, and videos ("Content"), are intended for personal, non-commercial use only. The primary goal of this Content is to educate and inform readers. This Content is not meant to offer financial advice, nor does it include any recommendation or opinion that should be relied upon for making financial decisions. Certain Content on this platform may be sponsored or unsponsored, but it does not serve as a solicitation or endorsement to buy, sell, or hold any securities, nor does it encourage any specific investment activities. Kapitales Research is not authorized to provide investment advice, and we strongly advise users to seek guidance from a qualified financial professional, such as a financial advisor or stockbroker, before making any investment choices. Kapitales Research disclaims all liability for any direct, indirect, incidental, or consequential damages arising from the use of the Content, which is provided without any warranties. The opinions expressed by contributors or guests are their own and do not necessarily reflect the views of Kapitales Research. Media such as images or music used on this platform are either owned by Kapitales Research, sourced through paid subscriptions, or believed to be in the public domain. We have made reasonable efforts to credit sources where appropriate. Kapitales Research does not claim ownership of any third-party media unless explicitly stated otherwise.
Customer Notice:
Nextgen Global Services Pty Ltd trading as Kapitales Research (ABN 89 652 632 561) is a Corporate Authorised Representative (CAR No. 1293674) of Enva Australia Pty Ltd (AFSL 424494). The information contained in this website is general information only. Any advice is general advice only. No consideration has been given or will be given to the individual investment objectives, financial situation or needs of any particular person. The decision to invest or trade and the method selected is a personal decision and involves an inherent level of risk, and you must undertake your own investigations and obtain your own advice regarding the suitability of this product for your circumstances. Please be aware that all trading activity is subject to both profit & loss and may not be suitable for you. The past performance of this product is not and should not be taken as an indication of future performance.
Kapitales Research, Level 13, Suite 1A, 465 Victoria Ave, Chatswood, NSW 2067, Australia | 1800 005 780 | info@kapitales.com.au