Chemical formula of tantalum niobium ores is AB2O6

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Chemical formula of tantalum niobium ores is AB2O6, both referred to as Ta-Nb ores. A is Fe, Mn, B is niobium, tantalum. Susceptibility of niobium tantalum is (22.1 ~ 37.2) × 10-6. Niobite dielectric coefficient is between 10 and 12, tantalite is 7-8. Mineral density is between 5.15 and 8.20(increased by tantalum content).

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