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[Analysis on 24 Samples of Fluoritum by XRD Pattern].

Long Cheng, Jing Ming, Yan Cao

    Zhong Yao Cai = Zhongyaocai = Journal of Chinese Medicinal Materials
    |August 7, 2018
    PubMed
    Summary

    X-ray diffraction (XRD) effectively identifies Fluoritum, distinguishing genuine samples from inferior or counterfeit products based on phase composition and calcium fluoride (CaF2) content. This method ensures quality control for medicinal use.

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    Area of Science:

    • Geochemistry
    • Mineralogy
    • Pharmacognosy

    Background:

    • Fluoritum, a mineral used in traditional medicine, requires rigorous quality control.
    • Variations in morphological features can impact the purity and efficacy of Fluoritum.
    • The China Pharmacopeia (2010 edition) sets standards for Fluoritum identification and CaF2 content.

    Purpose of the Study:

    • To establish a reliable method for identifying Fluoritum using X-ray diffraction (XRD).
    • To analyze Fluoritum samples with diverse morphological characteristics.
    • To correlate physical traits with the quality and purity of Fluoritum.

    Main Methods:

    • Analysis of 24 commercial Fluoritum samples using XRD.
    • Determination of phase compositions and calcium fluoride (CaF2) content.
    • Comparison of analytical results with China Pharmacopeia standards.

    Main Results:

    • Genuine Fluoritum samples (1-7, 13) primarily contained fluorite with minor quartz.
    • Inferior products (8-12) were identified as doped samples.
    • Counterfeit products (14-24) exhibited complex phase compositions and significantly low CaF2 content.
    • Genuine Fluoritum typically appears as shattered, lustrous sand in shades of green or purple.

    Conclusions:

    • Inferior Fluoritum products can be purified by removing impurities for medicinal use.
    • Counterfeit Fluoritum products with high, inseparable impurities are unsuitable for medicine.
    • Powder characteristics can supplement Fluoritum identification.
    • XRD provides accurate identification of Fluoritum, regardless of morphological variations.