close coltan ore with dark grainy texture and metallic flecks |
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| navigate by keyword : coltan tantalum ore mineral metal raw material mining electronics hightech geology industrial extraction rare energy capacitor surface texture closeup natural resource mobile devices macro background dense heavy industry metallurgy sample technology dark rock product critical conductor smelting earth rugged metallic strategic component circuit |
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| Close-up of coltan ore with dark, grainy texture and metallic flecks, a vital source of tantalum used in electronics and high-tech devices |
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