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The minister for industry has visited mining sites across Cornwall ahead of the government's upcoming strategy on minerals.
The Critical Minerals Strategy aims to create a secure domestic supply chain of minerals like graphite and tin, which are used in the production of electronics like mobile phones.
Industry Minister Sarah Jones said the purpose of visiting sites including Cornwall's South Crofty Tin Mine and Camborne School of Mines was to "really understand what the need is".
"There is huge potential here, we know that government has a role, we need to work out what the role is going forward," she said.
The need for critical minerals will be four times higher by 2040 due to their use in clean energy technologies, according to the policy paper for the strategy.
The paper describes the current supply chain of minerals to the UK as complex, volatile and dominated by China.
"In a changing world, it's never been so important to have strong supplies of critical minerals. Without them we can't have renewable energy, AI or a thriving car sector," said Jones.
"That's why we're working with industry to develop a landmark Critical Minerals Strategy that will support the industries of tomorrow and deliver for business."
She added: "Seeing Cornwall's thriving mining cluster was vital to help me develop the new strategy which will deliver good jobs and a stronger economy."
