[Archaeological application of the Raman microprobe to the non-destructive identification of dinosaur fossil from Yunnan Wuding].
Selected ancient Dinosaur fossils (about a hundred million ago) from Wuding, Yunnan, pilot were studied by micro-Raman spectroscopy, atomic emissive spectrum and polarization microscopic analysis. Raman experimental results found out the primary compounds of fossil surface and section are calcite (CaCO3), and are not others. Analysis of atomic emissive spectrum indicated that main elements of fossils are calcium (> 10%), silicon (5.0%), phosphor (4.0%) and iron (1.0%), rare elements example of iridium (Ir) and thorium (Th) are not found in testing. Complementary studies by atomic emissive spectrum and polarization microscope found that besides calcite (CaCO3), SiO2.nH2O, which is not crystal, is contained in the examples of the fossils. Main composition data taken from both the atomic emissive spectrum, microscopic photograph and Raman spectroscopy are in agreement.
Yang
Qun
Q
Physics Department of Chuxiong Teacher' College, Chuxiong 675000, China.
Wang
Yi-lin
YL
Zhang
Peng-xiang
PX
Li
Chao-zhen
CZ