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Caracterización mineralógica y propiedades de fluorescencia de la apatita azul, amarilla y verde
Wenkai Liang1, Nai Wang1, Yingrui Gan1
1School of Gemmology, China University of Geosciences Beijing 100083 China 2003011807@cugb.edu.cn.
RSC advances
|August 28, 2025
Resumen
Este estudio compara la apatita azul, amarilla y verde, revelando estados distintos de fluorescencia y oxidación. La apatita amarilla muestra una mayor estabilidad térmica en comparación con la apatita azul.
Área de la Ciencia:
- Minerología
- Espectroscopia
- Ciencias de los materiales
Sus antecedentes:
- Los minerales de apatita exhiben diversos colores (azul, amarillo, verde) y interesantes propiedades de fluorescencia.
- Comprender estas propiedades es crucial para la investigación en mineralogía y ciencias de los materiales.
Objetivo del estudio:
- Investigar y comparar las características mineralógicas y las propiedades de fluorescencia de la apatita azul, amarilla y verde.
- Analizar las características estructurales, de composición y espectroscópicas que influyen en la luminiscencia de la apatita.
Principales métodos:
- Caracterización de tres colores distintos de apatita (azul, amarillo y verde) mediante técnicas espectroscópicas.
- Análisis de los estados de oxidación, composición elemental y sustituciones estructurales (por ejemplo, carbonato por fosfato).
- Investigación de los espectros de emisión de fluorescencia y la intensidad de luminiscencia frente a las relaciones de temperatura.
Principales resultados:
- La apatita azul y verde son fluorapatitas en un estado de oxidación medio, mientras que la apatita amarilla está en un estado de oxidación.
- Las muestras de apatita azul y verde mostraron la sustitución de [CO3]2- por [PO4]3-.
- Se observaron distintas emisiones de fluorescencia: amarillo (naranja), azul/verde (azul-violeta), con un pico común a 400 nm (Ce3+, Eu2+).
- Los picos de emisión a 585 nm y 600 nm se atribuyen a Sm3+ y Pr3+ respectivamente.
- La apatita amarilla demostró una estabilidad térmica superior en comparación con la apatita azul.
Conclusiones:
- El color, el estado de oxidación y la composición de oligoelementos influyen significativamente en las características de fluorescencia de la apatita.
- La apatita amarilla exhibe una mayor estabilidad térmica, lo que sugiere aplicaciones potenciales donde están involucradas altas temperaturas.
- Este estudio comparativo profundiza en la comprensión de los mecanismos de luminiscencia y las variaciones mineralógicas de la apatita.
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