Semi-quantitative determination of apatite anion composition for fission-track analysis using infra-red microspectroscopy

Siddall, Ruth; Hurford, Anthony J.

doi:10.1016/s0009-2541(98)00057-6

Cited by 11 publications

(4 citation statements)

References 10 publications

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“…Spectra were collected with 4 cm –1 spectral resolution from 7000 to 400 cm –1 (Supporting Information Figure 8). Phase purity was confirmed by FTIR and spectra are consistent with literature spectra …”

Section: Methodssupporting

confidence: 83%

“…Phase purity was confirmed by FTIR and spectra are consistent with literature spectra. 52 Raman Spectroscopy. Raman spectra were recorded in backscattering geometry using 532 nm excitation in a WITec al-pha300R confocal Raman microscope (WITec Instruments Corp. Maryville, TN) with a spatial resolution of 0.7À1.6 μm and spectral resolution of 0.9 cm À1 .…”

Section: Methodsmentioning

confidence: 99%

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Atom Probe Tomography of Apatites and Bone-Type Mineralized Tissues

2012

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Nanocrystalline biological apatites constitute the mineral phase of vertebrate bone and teeth. Beyond their central importance to the mechanical function of our skeleton, their extraordinarily large surface acts as the most important ion exchanger for essential and toxic ions in our body. However, the nanoscale structural and chemical complexity of apatite-based mineralized tissues is a formidable challenge to quantitative imaging. For example, even energy-filtered electron microscopy is not suitable for detection of small quantities of low atomic number elements typical for biological materials. Herein we show that laser-pulsed atom probe tomography, a technique that combines subnanometer spatial resolution with unbiased chemical sensitivity, is uniquely suited to the task. Common apatite end members share a number of features, but can clearly be distinguished by their spectrometric fingerprint. This fingerprint and the formation of molecular ions during field evaporation can be explained based on the chemistry of the apatite channel ion. Using end members for reference, we are able to interpret the spectra of bone and dentin samples, and generate the first three-dimensional reconstruction of 1.2 × 10(7) atoms in a dentin sample. The fibrous nature of the collagenous organic matrix in dentin is clearly recognizable in the reconstruction. Surprisingly, some fibers show selectivity in binding for sodium ions over magnesium ions, implying that an additional, chemical level of hierarchy is necessary to describe dentin structure. Furthermore, segregation of inorganic ions or small organic molecules to homophase interfaces (grain boundaries) is not apparent. This has implications for the platelet model for apatite biominerals.

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Section: Methodssupporting

confidence: 83%

Section: Methodsmentioning

confidence: 99%

Atom Probe Tomography of Apatites and Bone-Type Mineralized Tissues

2012

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“…Their t3 apatite data and the analyses presented here show that the fluorine apatite endmember (calculated as F/(F+Cl+OH)) varies from 38 to 84%, while the calculated hydroxile end-member encompasses 13 to 54%. Chlorine contents, which were found to significantly influence the annealing characteristics of fission tracks , are significantly lower than those for the Durango apatites (Siddall and Hurford 1998), rarely exceeding 8% of a calculated Cl end-member.…”

Section: Discussionmentioning

confidence: 73%

A New Multi-Mineral Age Reference Material for⁴⁰Ar/³⁹Ar, (U-Th)/He and Fission Track Dating Methods: The Limberg t3 Tuff

Kraml

Pik

Rahn

et al. 2006

Geostand Geoanalyt Res

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The phonolitic Limberg t3 tephra (Kaiserstuhl Volcanic Complex, Germany) was previously dated by the conventional K/Ar method yielding inconsistent results. We have re‐dated this tephra layer with three independent methods. Fission Track (FT) external detector analyses on single apatite crystals (16.8 ± 1.3 Ma, 2s) and (U‐Th)/He measurements on titanite and apatite (16.5 ± 1.0 Ma, 2s and 16.8 ± 1.0 Ma, 2s, respectively) are in close agreement with laser Ar/Ar dates on incrementally heated single crystals of sanidine (16.3 ± 0.4 Ma, 2s). Due to very rapid cooling, the He, FT and Ar thermochronometers provide one single age representing the eruption event. The different minerals are characterised by favourable properties with respect to their chemical composition, grain size and shape. In particular for the t3 sanidine, homogeneity has been demonstrated by electron microprobe analysis and on a grain‐to‐grain and grain‐internal scale by single crystal incremental laser heating. Based on the agreement between independent methods and the mineral yield of this unit, the Limberg t3 tephra is proposed as multi‐method age reference material for single grain laser Ar/Ar, FT and (U‐Th)/He dating.

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“…Apart from temperature, chemical composition is known to have an effect on the annealing behaviour (Green et al 1985(Green et al , 1986Crowley & Cameron 1987;Ò Sullivan & Parrish 1995;Siddall & Hurford 1998). Thus, the long axis of etch pits on the polished surface (referred to as Dpar, Burtner et al 1994) was measured (magnification Â2000) as an indicator of the annealing behaviour of apatite.…”

Section: Fission Track Analysis: Methodology and Analytical Proceduresmentioning

confidence: 99%

Tertiary cooling and exhumation history in the Maramures area (internal eastern Carpathians, northern Romania): thermochronology and structural data

Gröger

Fügenschuh

Tischler

et al. 2008

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The Tertiary kinematic history of the Maramures area is constrained by integrating thermochronological (fission track and (U-Th)/He analysis) data with field-based structural investigations. This study focuses on the tectonic evolution of the northern rim of the TiszaDacia block during collision with the European margin. Cretaceous nappe stacking, related metamorphism as well as Late Cretaceous exhumation are evidenced by zircon fission track data.

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Semi-quantitative determination of apatite anion composition for fission-track analysis using infra-red microspectroscopy

Cited by 11 publications

References 10 publications

Atom Probe Tomography of Apatites and Bone-Type Mineralized Tissues

Atom Probe Tomography of Apatites and Bone-Type Mineralized Tissues

A New Multi-Mineral Age Reference Material for⁴⁰Ar/³⁹Ar, (U-Th)/He and Fission Track Dating Methods: The Limberg t3 Tuff

Tertiary cooling and exhumation history in the Maramures area (internal eastern Carpathians, northern Romania): thermochronology and structural data

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Semi-quantitative determination of apatite anion composition for fission-track analysis using infra-red microspectroscopy

Cited by 11 publications

References 10 publications

Atom Probe Tomography of Apatites and Bone-Type Mineralized Tissues

Atom Probe Tomography of Apatites and Bone-Type Mineralized Tissues

A New Multi-Mineral Age Reference Material for40Ar/39Ar, (U-Th)/He and Fission Track Dating Methods: The Limberg t3 Tuff

Tertiary cooling and exhumation history in the Maramures area (internal eastern Carpathians, northern Romania): thermochronology and structural data

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A New Multi-Mineral Age Reference Material for⁴⁰Ar/³⁹Ar, (U-Th)/He and Fission Track Dating Methods: The Limberg t3 Tuff