Results 11 to 20 of about 1,954 (252)

Polysomatic apatites [PDF]

open access: yesActa Crystallographica Section B Structural Science, 2010
Certain complex structures are logically regarded as intergrowths of chemically or topologically discrete modules. When the proportions of these components vary systematically a polysomatic series is created, whose construction provides a basis for understanding defects, symmetry alternation and trends in physical properties.
Baikie T   +7 more
openaire   +3 more sources

Synthesis of nanorod apatites with templates at critical micelle concentrations and in vitro evaluation of cytotoxicity and antimicrobial activity

open access: yesJournal of Asian Ceramic Societies, 2021
This study aimed to investigate the synthesis, cytotoxicity, and antimicrobial activity of nanorod apatites obtained using different surfactants at their critical micelle concentrations via hydrothermal method.
Ssu-Meng Haung   +5 more
doaj   +1 more source

Crystallographic and Physicochemical Analysis of Bovine and Human Teeth Using X-ray Diffraction and Solid-State Nuclear Magnetic Resonance

open access: yesJournal of Functional Biomaterials, 2022
Dental research often uses bovine teeth as a substitute for human teeth. The aim of this study was to evaluate differences in the crystalline nanostructures of enamel and dentin between bovine and human teeth, using X-ray diffraction (XRD) and solid ...
Noriko Hiraishi   +4 more
doaj   +1 more source

Structural properties of apatites from Finland studied by FTIR spectroscopy [PDF]

open access: yesBulletin of the Geological Society of Finland, 1998
Studies by XRD and FTIR analyses of the structure of Sokli and Siilinjärvi apatites and a comparison with the Kola and Kovdor apatites are presented.
M. Veiderma, R. Knubovets, K. Tõnsuaadu
doaj   +1 more source

Gold in biogenic apatites of the Baltic-Ladoga phosphorite basin

open access: yesЗаписки Горного института, 2022
The distribution of gold in biogenic apatites from the Ordovician deposits in the northwest of the East European Platform shows that the maximum concentration of gold in apatites is found within the Ladoga-Baltic suture zone.
Sergey B. Felitsyn, Nadezhda A. Alfimova
doaj   +1 more source

Origin of Mineralizing Fluids in the Choghart Magnetite-Apatite Deposit, NE of Bafq: Evidence from Mineralogy, Geochemistry, Microthermometry, Stable (O-H and O-C) and Unstable Isotopes (U-Pb and Nd-Sm)

open access: yesJournal of Economic Geology, 2022
Introduction The Bafq mining district (BMD) in the Kashmar-Kerman tectonic zone hosts ~34 magnetite-hematite-apatite ore deposits with about 1500 Mt of reserves in the central Iran (Torab, 2008).
kiamars hosseini   +2 more
doaj   +1 more source

Marine-Inspired Approaches as a Smart Tool to Face Osteochondral Regeneration

open access: yesMarine Drugs, 2023
The degeneration of osteochondral tissue represents one of the major causes of disability in modern society and it is expected to fuel the demand for new solutions to repair and regenerate the damaged articular joints.
Anna Tampieri   +5 more
doaj   +1 more source

Geochemistry of apatite in various felsic rocks of the Piranshahr plutonic complex: an approach to investigate magmatic evolution [PDF]

open access: yesعلوم زمین خوارزمی, 2023
The felsic intrusive rocks in the Piranshahr plutonic complex consist of three groups: syenite, nepheline-syenite, and alkali-feldspar granite. They are co-genetic and formed approximately 40 million years ago.
Seyed Ali Mazhari, Kwan-Nang Pang
doaj  

Origin of magnetite and apatite ores in the Esfordi magnetite-apatite ore deposit NE of Bafq, south Yazd: insights from mineralogy, geochemistry, microthermometry, O-H stable and U-Pb and Nd-Sm non-stable isotopes

open access: yesJournal of Economic Geology, 2022
Petrographic and mineralogical data indicate the widespread presence of five generations of apatite, two generations of monazite with minor xenotime in the Esfordi deposit.
Kiamars Hosseini   +1 more
doaj   +1 more source

A Study on Apatite from Mesozoic Alkaline Intrusive Complexes, Central High Atlas, Morocco

open access: yesCrystals, 2022
There are abundant phosphate mines in the High Atlas Mountains of Morocco. Gem-quality apatite is produced at the Anemzi deposit, but its associated gem mineralogy is relatively poorly studied.
Pengyu Yuan   +3 more
doaj   +1 more source

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