## 3 Results and Discussion
\begin{table}
\begin{tabular}{l l l l l l} \hline \hline  & **d(hkl)** & \multicolumn{4}{c}{**Cell Parameters**} \\ \hline
**Sample** & **\(d\)(003)/Å** & **\(d\)(1,1,15)/Å** & **\(c\)/Å** & **\(a=b\)/Å** & **V/Å\({}^{3}\)** \\ \hline Ca\({}_{\text{-}}\)CO\({}_{2}\) & 22.867 & 2.8148 & 68.601 & 7.143 c ** & 3031 \\ Ca\({}_{\text{-}}\)CO\({}_{2}\)-T & 23.299 & 2.8149 & 69.897 & 7.064 c  & 3020 \\ \(\text{[41]}\)\({}^{a}\) & 23.094(10) b  & — & 69.283(30) & 7.049(1) c  & 2981(1) \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Results of a unit cell of Grö reference; b the estimate of the spacing beginning with the value of c reported in [41] [PERSON] et al. (2019); and c the value of [PERSON] et al. (2019) [41] for a = b but without specifying its standard deviation. nucleic acids, ribose, lipids, or phosphates are absorbed efficiently by minerals such as pyrite, hematite, silica gel, mesoporous, zeolite, hydroxyapatite, titanium dioxide, and clays [46; 47; 48; 49; 50; 51; 52; 53; 54]. It has also been reported that the polymerization of biomolecules can be carried out efficiently on minerals or even amorphous materials, due to the fact that they catalyze the union of monomers to form various biomolecules [54; 55]. In other published contributions, it has been observed that the abiotic synthesis of histidine in conditions that emulate the prebiotic environment is possible. This was performed by using DL-histidine on minerals such as pyrite, aragonite, and antigorite [56]. In this work, the formation of amide I and amide II vibration bands were observed, which was possible because of the role of the surface of the igneous rock in increasing organic stability during prebiotic evolution [56]. Additionally, our results reinforce what other work groups have postulated: the first biomolecules, and therefore pioneer organisms, originated in the prebiotic soup with the participation of minerals or amorphous silicates [56; 57; 58; 59; 60; 61; 62; 63; 64; 65; 66; 67]. In another work, the interactions between amino acids and the surface of layered double hydroxides (LDHs) were evaluated, where the results showed that all the amino acids analyzed were absorbed on the surface of the LDHs with positive charges from C-terminal oxygen through the formation of hydrogen bridges [54]. The interaction of the obsidian with other biomolecules such as nucleic acids was also evaluated, and the results obtained suggest that, in the origin of life, minerals or even some igneous rocks permitted DNA to reside outside the molecule that stored genetic information, while RNA (ribose nucleic acid) and PNA (peptide nucleic acid) served other functions [68]. In this way, the presence of organic molecules, water, and obsidian pieces function as catalysts for the synthesis of complex molecules and as protectors of the biomolecules from the external environment [55; 69]. However, in these works, whether organic and inorganic molecules in dissolution can interact with the molecules of obsidian was not evaluated, unlike our results presented here (Figures 2 and 3, Table 1). Additionally, our results favor our hypothesis as follows: biomorphs might have been one of the first inorganic structures that were formed in the Precambrian whereromolecules could be concentrated, aligned, polymerized, and protected from the atmospheric conditions of that time, which have been reported to not have been the best conditions for maintaining and perpetuating life [19; 21]. Having identified that the calcium silica-carbonate biomorphs synthesized on obsidian are formed by rontgenite, we propose that volcanic glasses that were rich in silica (such as obsidian) possibly played a leading role in concentrating and aligning biomolecules in the Precambrian era, acting as a template in their synthesis, as well as protecting the first biomolecules that gave rise to the pioneer organisms.