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Abstract
In this paper, several researches were undertaken related to a violent phenomenon, characterized by a sonic boom, felt on an area of at least 500 km2, shortly followed by the fall of rock fragments that were then recovered from the ground. These presented different appearance characteristics from those of the materials and rocks specific to the respective area. Spectroscopic and petrographic analyses were performed to identify the composition, morphological and crystallinity characteristics in order to elucidate the nature of the collected rock samples. Using FTIR spectroscopy functional groups, as those reported in the literature for Murchison, Bells and Allende, carbonaceous chondrite meteorites were identified. The fragments evidenced topography and morphology that can be assigned to the chondrules and chondrites of carbonaceous meteorites (CMs). The material in the fragments proved to be as insoluble organic material (IOM), being insoluble in water and organic solvents. Its crystalline structure was also evidenced by XRD analysis and FTIR spectrum. These physico-chemical properties, in relation to the sonic boom perceived in the area from where they were collected, indicate the spatial origin of the fragments of rock as possible meteorite fragments.
Highlights
Meteorites are an invaluable source of information about both extraterrestrial bodies and the matter in their composition, as well as physico-chemical interactions that take place in extreme conditions, clearly different from those on earth
An elemental formula has been established for the Murchison meteorite C100 H46 N10 O15 S4.5, being a material with a complex composition, but which is not fully elucidated at the molecular level
In the sense of the abovementioned factors, we further present the mapping analysis and morphological aspect (SEM images) on several areas studied from samples peaks at cm−1 (P1) and P2 of the rock fragments
Summary
Meteorites are an invaluable source of information about both extraterrestrial bodies and the matter in their composition, as well as physico-chemical interactions that take place in extreme conditions, clearly different from those on earth. The study of meteorites seeks answers related to the origin of organic matter and life on Earth. Among the categories of meteorites identified so far, that of carbonaceous chondrites is a study material of great interest, with researchers suggesting that, by establishing the connection with the parent body and identifying the physico-chemical phenomena associated with the synthesis of materials, the origin of life can be deciphered [1,2]. The weathering of carbonaceous chondrite (CC) meteorites by liquid water has been studied [1,6]. The methods to detect traces of elements in meteorites, such as
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