## 3 Results and Discussions
### FTIR Spectra Analysis
The band at 1656 cm\({}^{-1}\) in both the P1 and P2 FTIR spectra are assigned to the O-H group of _absorbed water in hydrous silicates_--as also reported by [PERSON] et al. [7] for the Murchison meteorite. Correlating this with the multiple bands from 3805 cm\({}^{-1}\), 3750 cm\({}^{-1}\) and 3545 cm\({}^{-1}\), the first two may indicate the _silanol groups in polymeric structures_ or even _additional to fullerenes_. In the same range (1656 cm\({}^{-1}\)) there are stretching vibration modes specific to carbonyl groups C=O involved in hydrogen bonds [21]. This would indicate amides; hence, amino groups (N-H) are also in the same vibrations range [25] assigned to _amides I_, NHC=O, free or H-bonded [21]. In the same range, C=C stretching modes in _arenes_ are reported in the literature [21]. _Aliphatic_ C-H is identified in the bands at 2839 cm\({}^{-1}\) (P1) and 2860 cm\({}^{-1}\) (P2) [20]. [PERSON] et al. [7] reported stretching modes assigned to aliphatic C-H at 2960, 2930 and 2860 cm\({}^{-1}\) for the [PERSON] meteorite and 2950 cm\({}^{-1}\) for the Bells meteorite. In the same range, the bands at 2839 cm\({}^{-1}\), 2764 cm\({}^{-1}\) (P1), 2860 cm\({}^{-1}\) and 2764 cm\({}^{-1}\) (P2) denote the _fullerene_ structures of the C\({}_{60}\)\(H_{36.27}\) type [24]. C\({}_{60}\) in the fullerenes is also indicated by the bands at 1430 cm\({}^{-1}\) and 597 cm\({}^{-1}\)[30] in both samples (P1, P2); in the same range, the C-Si stretching modes are assigned in the literature [21]. The band at 1093 cm\({}^{-1}\) could also be assigned to C-O stretching in the fullerenes [24] as skeletal vibrations due to C-O stretching [21]. Parent fullerene has been previously identified in the meteorites [9]. The band at 1093 cm\({}^{-1}\) denotes the _sulfates and sulfites_, SO\({}_{4}\)\({}^{2-}\) and SO\({}_{3}\)\({}^{2-}\), in CuSO\({}_{4}\), CaSO\({}_{3}\) and in FeSO\({}_{4}\). Based on the elemental composition determined by EDS analysis, the 1093 cm\({}^{-1}\) is assigned to CaSO\({}_{4}\), CaSO\({}_{3}\) and to FeSO\({}_{4}\). This assignment also takes into account the S-O stretching vibrations that CaSO\({}_{4}\) exhibits at 667 cm\({}^{-1}\) and that are noticed in the P1 spectrum (669; 661 cm\({}^{-1}\)) and less intensely in the P2 spectrum (669; 661 cm\({}^{-1}\)) and that FeSO\({}_{4}\) exhibits at 611 cm\({}^{-1}\), which is noticed in the P1 spectrum (611 cm\({}^{-1}\)) and P2 spectrum (612 cm\({}^{-1}\)) [25]. The band at 650 cm\({}^{-1}\) is assigned to S-O stretching in _calcium sulfite_ CaCO\({}_{3}\) in the P1 and P2 spectra [25] confirming sulfites. Calcium sulfate is also confirmed by the difractogram of XRD analysis. [PERSON] et al. [7] have reported SO\({}_{4}\)\({}^{2-}\) in the Murchison and Bells meteorites. Vibration modes at 2340 cm\({}^{-1}\) (P1) and 2361 cm\({}^{-1}\) (P2) and 689 cm\({}^{-1}\) (P1, P2) are assigned to molecular _adsorbed CO\({}_{2}\)_[25]. According to _[PERSON]_ et al. [31], the bands in the range of 900 \(-\) 650 cm\({}^{-1}\) could be assigned to _thorium covalent bonds with oxygen_ (Th-O and O-Th-O) [12] also evidenced Thorium in meteorites. It is important to notice that in the FTIR spectra of samples P1 and P2 is the curved base line, which drops off at both the left and right sides, indicating the _effects of scattering_, possibly due to the _crystalline state_ of the particles analyzed, to the _effect of carbon black_ or to _spherical particles_. The shape of the baseline may also indicate the _biological material_ (DNA) causing _Mie scattering_, or the _non-Lambert-Beer absorption_ behavior in biological cells [33]. The FTIR spectra of the two samples (P1, P2) exhibit bands of similar wavenumbers as those reported for the Murchison and Bells meteorites. The spectra of the P1 and P2 samples exhibit fullerene structures that were not reported for the Murchison and Bells meteorites,but are reported by [PERSON] et al. [9] as evidence for meteorites. Carbonates, silanol groups and adsorbed CO2 are also identified in the spectra of the P1 and P2 samples.