Raman spectral, elemental, crystallinity, and oxygen-isotope variations in conodont apatite during diagenesis

Zhang, Lei; Cao, Ling; Zhao, Laishi; Algeo, Thomas J.; Chen, Zhong‐Qiang; Li, Zhihong; Lv, Zaozao; Wang, Xiangdong

doi:10.1016/j.gca.2017.04.036

Cited by 33 publications

(36 citation statements)

References 95 publications

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“…This B‐type carbonate substitution for PO 4 3− with associated vacancy formation and lattice distortion only leads to a comparably small spectral shift . However, the combination with the minor A‐type substitution (B:A ≈9:1) can then account for the observed correlated variation in Γ and ν due to structural disorder associated with the substitution as has been shown in several geological and biomineral apatite systems …”

Section: Discussionmentioning

confidence: 75%

Hyper‐spectral Raman imaging correlating chemical substitution and crystallinity in biogenic hydroxyapatite: Dentin and enamel in normal and hypoplastic human teeth

Wang

Anderson²,

Muller³

et al. 2018

J Raman Spectroscopy

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Micro‐Raman imaging and spectroscopy has become an established technique for the characterization of biogenic hydroxyapatite as, for example, the primary constituent of human teeth. However, few studies have yet gone beyond a qualitative analysis of the Raman response providing only limited insight into spatial heterogeneity of composition, structure, and degree of crystallinity. Here, we show how correlative electron microprobe and extended hyperspectral Raman imaging with high spatial and spectral resolution, with peak position and linewidth analysis, and from the μm to mm scale, provides insight into structural characteristics in dentin and enamel. From comparison of healthy and hypoplastic teeth as a representative tooth disease example, we determine variations in degree of crystallinity, both locally across the dentin–enamel junction, and with distinct long‐range spatial variations. We identify a correlation of spectral peak position and linewidth as a measure of crystal lattice disorder across tubules, dentin, dentin–enamel junction, and enamel. This correlative Raman imaging and analysis approach may help to provide a better understanding of apatite geochemistry and biomineralization.

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Section: Discussionmentioning

confidence: 75%

Hyper‐spectral Raman imaging correlating chemical substitution and crystallinity in biogenic hydroxyapatite: Dentin and enamel in normal and hypoplastic human teeth

Wang

Anderson²,

Muller³

et al. 2018

J Raman Spectroscopy

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“…; Katvala & Henderson ; Zhang et al . ) largely reflect the variety of diagenesis of the skeletal tissue influenced by hydrothermal or meteoric alteration and other types of remineralization.…”

Section: Discussionmentioning

confidence: 99%

Euconodont hard tissue: preservation patterns of the basal body

Suttner

Kido

2019

Palaeontology

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Conodont elements, consisting of crown and basal tissue are the well‐known fossilized hard parts of Conodonta (extinct marine chordates), but the taphonomic processes leading to decomposition or remineralization of the basal tissue are not well understood. Here we focus on the taphonomy of basal tissue, reviewing the published record and describing new material from Asia and Europe (248 occurrences globally). These include crown and basal tissue in conjunction, and isolated basal bodies showing different stages of preservation. Some isolated specimens resemble phosphate rings similar to those assigned to Phosphannulus universalis. High‐resolution biostratigraphy indicates that the lamellar type of conodont basal tissue is found in all facies and depositional environments. Other basal tissue types, described in the literature as tubular, mesodentine, spherulitic or lamellar with canalules, are limited to the early Palaeozoic and found exclusively in siliciclastic deposits (with the exception of spherulitic tissue). Although the stratigraphic record of basal tissue spans the range of Euconodonta (Cambrian–Triassic), this study shows that most of the isolated plate and ring‐like structures are derived from early Palaeozoic coniform conodonts. Basal tissue of platform‐type elements has a much more fragile shape and is therefore rarely preserved as a recognizable isolated unit.

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“…Raman spectroscopy is a powerful, fast, and nondestructive experimental technique, which has been extensively applied not only in basic scientific researches, but also for practical applications. It can provide physical, chemical, and structural characteristics of investigated samples [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. In the past decade, Raman spectroscopy has been applied for quantitative and qualitative studies of various types of minerals.…”

Section: Introductionmentioning

confidence: 99%

Raman Spectroscopy Study of Phosphorites Combined with PCA-HCA and OPLS-DA Models

et al. 2019

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Phosphorite is a nonrenewable strategic resource, a convenient and rapid method of phosphorite grade identification and classification is important to improve phosphate utilization. In this study, Raman spectroscopy has been combined with principal component analysis and hierarchical clustering analysis (PCA-HCA) and orthogonal partial least squares-discriminant analysis (OPLS-DA) models for an investigation of different grade phosphorite samples. Both the PCA-HCA and OPLS-DA models showed that different grade phosphorite samples can be clearly distinguished by statistically analyzing the Raman spectra after smoothing, baseline correction, and first derivation. In addition, the S-line study on the OPLS-DA model clearly demonstrated that the symmetrical stretching vibrational mode of phosphate near 960 cm−1 had a much more significant contribution than other vibrational modes for the differentiation of different grade phosphorite samples.

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Raman spectral, elemental, crystallinity, and oxygen-isotope variations in conodont apatite during diagenesis

Cited by 33 publications

References 95 publications

Hyper‐spectral Raman imaging correlating chemical substitution and crystallinity in biogenic hydroxyapatite: Dentin and enamel in normal and hypoplastic human teeth

Hyper‐spectral Raman imaging correlating chemical substitution and crystallinity in biogenic hydroxyapatite: Dentin and enamel in normal and hypoplastic human teeth

Euconodont hard tissue: preservation patterns of the basal body

Raman Spectroscopy Study of Phosphorites Combined with PCA-HCA and OPLS-DA Models

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