RT Journal Article
T1 A multi-technique approach to characterize the composition and color of the fossil remains of the “Húmera Paleontological Site” from Spain
A1 Sánchez Pastor, Nuria
A1 Fesharaki Tabatabaei, Omid
A1 Hernando Alonso, Ana Isabel
AB This paper combines a variety of physicochemical non-destructive techniques to obtain a knowledge of the chemical and mineralogical composition of the scarce fossil bones from the Húmera paleontological site (Madrid, Spain). The main classification of the samples has distinguished six colors: red, gray, blue, white, light yellow and green. μ-XRD and Raman spectroscopy have been correlated to study the structure and to distinguish between fluorapatite, chlorapatite, bioapatite and carbonated bones. The bones have further been classified in three main types. Type I includes gray, green, white, and blue samples, classified as fluorapatite and chlorapatite containing organic matter and adsorbed water. Type II, includes the red sample classified as bioapatite, showing broad Raman bands and μ-XRD peaks due to the lattice disorder created by the B-type substitutions emerging from a high matter content. Type III sample (yellow) shows a complete replacement of apatite by calcite which induce the high porosity of the sample. Diagenetic changes add further complexity to the structure of fossil bones, not only by new ionic substitutions but also in terms of biogenic or authigenic phases that form in the fossilizing bone. The multi-technique approach from a broad interdisciplinary perspective enables a better understanding of bone fossilization.
PB International Union of Geological Sciences
SN 0705-3797
YR 2024
FD 2024-06-01
LK https://hdl.handle.net/20.500.14352/105456
UL https://hdl.handle.net/20.500.14352/105456
LA eng
NO Sánchez-Pastor, Nuria, et al. «A Multi-Technique Approach to Characterize the Composition and Color of the Fossil Remains of the “Húmera Paleontological Site” from Spain». Episodes, vol. 47, n.o 2, junio de 2024, pp. 279-93, https://doi.org/10.18814/epiiugs/2024/024008
NO Ministerio de Ciencia, Innovación y Universidades
DS Docta Complutense
RD 7 abr 2025