Abstract
Gamma irradiation studies of (Mg0.905Fe0.095)2SiO4 olivine were performed using X-ray fluorescence method, X-ray diffraction, Raman and Mössbauer spectroscopy. The absorbed doses were 300, 600 and 1000 Gy. Small irradiation doses cause an increase of lattice vibrations and small deformation of both M1 and M2 octahedron. The observed effect is similar to the results expose to high temperature. However, the small deformation takes place only in unit cell of Olivine’s structure.
Highlights
Olivine is one of the simplest silicate minerals that can be found in igneous rocks on our planet
This paper presents comparative results of the characterization of olivine structure as a function of gamma irradiation at room temperature using the X-ray fluorescence method, X-ray diffraction, Raman spectroscopy and Mossbauer spectroscopy
Obtained X-ray diffraction studies (XRD) patterns show the same main lines as those in the theoretical end experimental diffractograms of olivine presented in literature [11, 12]
Summary
Olivine is one of the simplest silicate minerals that can be found in igneous rocks on our planet. Olivine (Fe,Mg)2SiO4 is orthosilicate with an orthorhombic crystal structure that is characterized by a distorted hexagonal close packing of oxygen ions with Si on tetrahedral interstices and Mg and Fe ions on octahedral sites (Fig. 1). The former is a regular octahedron, labeled M2, and the latter is a distorted octahedron, labeled M1. The Fe(II) and Mg(II) have no particular preference for either site. With the development of radiation physics, the study of the action of nuclear radiation on the structural properties and phase transitions in solids began [4]. The irradiance of drugs, or other medicinal products, by
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