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The potentials of Nigerian fluorite (CaF2:N) as a thermoluminescent dosimeter for environmental monitoring had been investigated. The glow curves of CaF2:N exhibits three peaks (PI, PII, and PIII) recorded at 111 ± 11oC (PI), 196 ± 2oC (PII), and 282 ± 4oC (PIII). For PII and PIII, a linear response to beta-ray was observed up to 72 mGy. The activation energy of the low-temperature peak was extracted from the glow curves to be 0.85 ± 0.17 eV and 0.99 ± 0.03 using the variable heating rate (VHR) and the initial rise (IR) methods, respectively. The frequency factor and the lifetime of the...