New data has unearthed the potential for New South Wales to become a hotbed for high-purity silica exploration, a key critical mineral used in the production of high-tech products such as semiconductors (computer chips), solar panels and specialty optical equipment.
The Geological Survey of NSW used the latest geochemical analysis to uncover high-purity silica potential, with results pointing to the Broken Hill, New England and Lachlan regions as being highly prospective for the exploration of this critical mineral.
Global demand for silica is expected to more than double over the next decade, with the rubber industry also driving market expansion alongside high-tech uses.
The findings of the report put NSW in a strong position to become a hub for silica exploration and production.
Of 400 samples taken from across the state, 50 contained high-purity silica exceeding 99.8 per cent, with the highest recorded value reaching 99.96 per cent.
The study also identified silica in a wide number of different forms across the state – including granitic quartz pipes, pegmatites, hydrothermal quartz bodies and silica-rich sedimentary units – with purity levels that could be considered for use in high-purity silica applications, widening exploration opportunities and methods.
The report also said NSW remains under-explored for high-purity silica, and renewed exploration could locate new opportunities with the potential to supply global markets.
Geological Survey of NSW head and chief geoscientist Dr Phil Blevin said archived materials from historical mines and drill core enabled the data findings.
“Some of these specimens are from mines that are no longer accessible. This gives us insight into critical minerals that, in some cases, had not even been identified at the time these mines were operating,” Dr Blevin said.
“Access to new and historical materials gives NSW a head start in identifying critical mineral opportunities across the state.”
NSW Minister for Natural Resources Courtney Houssos launched the findings at the WB Clarke Geoscience Centre in Londonderry, where cutting-edge analysis was undertaken.
She said the findings emphasised the state’s potential as a source of critical minerals exploration and development.
“NSW is rich in the critical minerals the world needs to power a clean energy future and support advanced technologies,” Houssos said.
She said the state government continued to partner with industry to provide more opportunities for investment and innovation while delivering the government’s Critical Minerals and High-Tech Metals Strategy.
“It’s initiatives like these that provide pre-competitive data and de-risk exploration, which are instrumental in making NSW a great place to invest.”
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