Naica’s “Cueva de los Cristales”: Synchrotron radiation characterization of the wall-crystal interface
DOI:
https://doi.org/10.31349/RevMexFis.3.010604Keywords:
Naica’s Cueva de los Cristales, µ-XRF, µ-XANESAbstract
Naica’s ”Cueva de los Cristales” was discovered in 2000. It has been considered particularly interesting for its beauty and the challenges it poses to crystallography. This article focuses on the study of the wall-selenite interface by various techniques, particularly X-ray diffraction (XRD), scanning electron microscopy (SEM), with emphasis on micro-X-ray fluorescence (micro-XRF) and micro-X-ray absorption near edge structure (micro-XANES). The main phases calcite, quartz, goethite and montmorillonite were identified by XRD, as well as the association of crystalline and amorphous minor and trace phases of Zn, Mn, Cu, As and Pb. The latter were identified in micro-XRF maps and micro-XANES spectra. The results for the morphology and the chemical description of the crystal-wall interface may contribute to propose a nucleation and growth mechanism for Naica megacrystals.
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Copyright (c) 2022 Bernardo Pérez-Cázares, María Elena Fuentes-Montero, Luis Edmundo Fuentes-Cobas, Isaí Castillo-Sandoval, Iván Jalil Carreño-Márquez, Hilda Esperanza Esparza-Ponce, Diane Eichert, René Loredo-Portales, Jesús Canche-Tello, José Manuel Nápoles-Duarte, Layla Muñoz-Castellanos, Guillermo González-Sánchez, Ignacio Alfonso Reyes-Cortés, María Elena Montero-Cabrera (Author)
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