Data on phase and chemical compositions of black sands from "El Ostional" beach situated in Mompiche, Ecuador

Karina J Lagos; Bojan A Marinkovic; Anja Dosen; Marco V Guamán; Víctor H Guerrero; Emilio Pardo; Patricia I Pontón

doi:10.1016/j.dib.2020.106214

Data on phase and chemical compositions of black sands from "El Ostional" beach situated in Mompiche, Ecuador

Data Brief. 2020 Aug 21:32:106214. doi: 10.1016/j.dib.2020.106214. eCollection 2020 Oct.

Authors

Karina J Lagos^{1

2}, Bojan A Marinkovic³, Anja Dosen³, Marco V Guamán⁴, Víctor H Guerrero¹, Emilio Pardo², Patricia I Pontón¹

Affiliations

¹ Department of Materials, Escuela Politécnica Nacional, Quito 170109, Ecuador.
² Molecular Science Institute, Coordination Chemistry Group, University of Valencia, Paterna 46980, Spain.
³ Department of Chemical and Materials Engineering, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 38097, Brazil.
⁴ Department of Mechanical Engineering, Escuela Politécnica Nacional, Quito 170109, Ecuador.

Abstract

Data revealing the phase and chemical compositions of natural black sands from "El Ostional" beach, located in the northern Ecuadorian Pacific coast have been presented. The samples were collected from six points over the shore area of approximately 500 × 40 m². The data on crystalline phases (iron titanium oxide, orthoclase feldspar and zircon) were determined by X-ray powder diffraction (XRPD), while semi-quantitative chemical analyses of major (Fe and Ti) and trace elements were obtained by X-ray fluorescence spectroscopy (XRF). The phase composition was verified by scanning electron microscopy (SEM), using backscattered electron (BSE) mode and energy dispersive spectroscopy (EDS). These comprehensive data are a contribution to valorize ilmenite-hematite solid solutions from natural resources towards the identification of novel technological applications.

Keywords: Ferrotitaniferous sands; Ilmenite-hematite solid solution; SEM; XRF; XRPD.