Results 51 to 60 of about 3,135 (181)

Apatite in Hamipterus tianshanensis eggshell: advances in understanding the structure of pterosaur eggs by Raman spectroscopy

Heritage Science, 2022
Pterosaur eggs can offer information about pterosaur reproductive strategies and are extremely precious because only a small number of specimens have been discovered.
Ying Li, Xufeng Zhu, Qiang Wang, Shunxing Jiang, Yimin Yang, Wugan Luo, Xiaolin Wang   +6 more
doaj   +1 more source

Fluoride as a Modifier of Metallome Homeostasis: A Systematic Review of Animal Studies

Basic &Clinical Pharmacology &Toxicology, Volume 139, Issue 4, October 2026.
ABSTRACT Fluoride is widely used for caries prevention due to its effects on mineralized tissues, yet its potential role as a modifier of systemic metal homeostasis remains insufficiently explored. This systematic review synthesizes preclinical evidence on the association between fluoride exposure and changes in metal and semi‐metal concentrations ...
Natalia Macedo‐Ribeiro, Jonas Tostes‐Figueiredo, Davi da Silva Barbirato, Isabel Maria Porto, Eliude Barbosa Gomes, Erico Marlon Moraes Flores, Marília Afonso Rabelo Buzalaf, Fernando Barbosa Jr, Raquel Fernanda Gerlach   +8 more
wiley   +1 more source

High‐pressure phase preservation in ordinary L‐chondrite melt veins: Evidence for control by post‐shock thermal evolution

Meteoritics &Planetary Science, Volume 61, Issue 10, Page 2549-2566, October 2026.
Abstract This study investigates the petrography and mineralogy of three L‐type ordinary chondrite meteorites: Northwest Africa (NWA) 4137 (L6), Homestead (L5), and Kunashak (L6). We studied the shock‐related deformation features in the matrix and the characteristics of the melt veins, including the presence or absence of high‐pressure (HP) phases. Our
S. Effraimidou, I. Baziotis, M. Simopoulou, L. Ferrière, C. Sanchez‐Valle, S. Klemme, J. Berndt, P. D. Asimow   +7 more
wiley   +1 more source

Structural characteristics and mechanisms of fluorapatite mechanochemical synthesis [PDF]

Stomatološki glasnik Srbije, 2016
This paper analyzes mechanisms of fluorapatite mechanochemical synthesis and its structural characteristics. Several studies of Jokanovic et al. published in appropriate journals and the book 'Nanomedicine, the biggest challenge of the 21st century' are ...
Jokanović Vukoman, Čolović Božana, Živković-Sandić Marija, Popović-Bajić Marijana, Živković Slavoljub   +4 more
doaj  

Oxygen isotope thermometry and composition of aqueous fluids within the parent body of asteroid (101955) Bennu

Meteoritics &Planetary Science, Volume 61, Issue 10, Page 2567-2591, October 2026.
Abstract We report on the petrography and oxygen isotopic compositions from in situ analyses of carbonates (Ca‐carbonate, dolomite, and Fe‐rich magnesite), magnetite, and apatite in particles from asteroid Bennu. Using oxygen isotope thermometry of Ca‐carbonate, dolomite, and magnetite, we estimated crystallization temperatures and the oxygen isotopic ...
Gary R. Huss, Kazuhide Nagashima, Elena Dobrică, Alexander N. Krot, Gregory Cane, Zoe E. Wilbur, Timothy J. McCoy, Catherine M. Corrigan, Sara S. Russell, Jessica J. Barnes, Ann N. Nguyen, Harold C. Connolly Jr., Dante S. Lauretta   +12 more
wiley   +1 more source

Estimating past fluid pH and evaporative conditions in Gale crater using terrestrial analog samples from Death Valley, CA

Meteoritics &Planetary Science, Volume 61, Issue 10, Page 2531-2548, October 2026.
Abstract Boron and lithium have been observed in Ca‐sulfate veins of Gale crater. These elements are highly water mobile and can inform us regarding the aqueous processes that may have taken place in Gale crater. However, the analysis of B in Gale crater is limited to low‐Fe rocks and minerals due to spectral interference of Fe with B in ChemCam data ...
D. Das, P. J. Gasda, K. Berlo, R. J. Leveille, M. A. Nellessen, L. Crossey, E. Peterson, R. Beal, A. L. Reyes‐Newell, S. M. Clegg, N. L. Lanza, O. Gasnault   +11 more
wiley   +1 more source

Fluorapatite from a Pegmatite with Miarolitic Cavities in the Larsemann Hills, East Antarctica: ID-TIMS U-Pb Ages and LA-ICP-MS Trace-Element Constraints on the Late Pan-African Orogenic Evolution

Geosciences
Pegmatites with miarolitic cavities have not previously been reported from the Larsemann Hills, East Antarctica, and their age and origin remain poorly constrained.
Ivan A. Babenko, Nailya G. Rizvanova, Sergey G. Skublov, Yuri A. Bishaev, Irina V. Talovina, Olga L. Galankina, Alexander V. Kuznetsov   +6 more
doaj   +1 more source

Elemental release and surface changes of fluorapatite–leucite porcelain upon immersion in acidic agents

Journal of Dental Sciences, 2010
Background/purpose: The potential erosive effects of acidic foods, sour fruits, and drinks on enamel have been extensively investigated. However, their effects on fluorapatite–leucite porcelain restorations have not been widely examined.
Boonlert Kukiattrakoon, Chanothai Hengtrakool, Ureporn Kedjarune-Leggat   +2 more
doaj   +1 more source

Gemological, Geochemical, and Geochronological Study of Apatite from the Shijiangshan, Inner Mongolia

Crystals
Apatite, a ubiquitous accessory mineral, serves as a valuable recorder of magmatic processes. This study presents a systematic investigation of gem-quality apatite from the Shijiangshan Pb-Zn deposit, Inner Mongolia, integrating gemological ...
Ming-Yue Wang, Yi-Hao Liang, Yu-Tong Ma, Yu-Han Wang, Ying-Xin Liu   +4 more
doaj   +1 more source

Accessory minerals and evolution of tin-bearing S-type granites in the western segment of the Gemeric Unit (Western Carpathians)

Geologica Carpathica, 2018
The S-type accessory mineral assemblage of zircon, monazite-(Ce), fluorapatite and tourmaline in the cupolas of Permian granites of the Gemeric Unit underwent compositional changes and increased variability and volume due to intensive volatile flux.
Broska Igor, Kubiš Michal
doaj   +1 more source