Vibrational Spectroscopy in Mineral Chemistry

2015 ◽  
pp. 1-10 ◽  
Keyword(s):  
Vibrational Spectroscopy ◽  
Mineral Chemistry

scholarly journals Correlative vibrational spectroscopy and 2D X-ray diffraction to probe the mineralization of bone in phosphate-deficient mice

2019 ◽  
Vol 52 (5) ◽  
pp. 960-971
Author(s):  
Helen E. King ◽  
Steven M. Tommasini ◽  
Alejandro B. Rodriguez-Navarro ◽  
Brandon Q. Mercado ◽  
H. Catherine W. Skinner
Keyword(s):  
Vibrational Spectroscopy ◽  
Bone Mineral ◽  
Bone Mineralization ◽  
Chemical Constituents ◽  
Mineral Chemistry ◽  
Phosphate Deficiency ◽  
Carbonate Content ◽  
X Ray Diffraction ◽  
Bone Maturation ◽  
X Ray

Bone crystallite chemistry and structure change during bone maturation. However, these properties of bone can also be affected by limited uptake of the chemical constituents of the mineral by the animal. This makes probing the effect of bone-mineralization-related diseases a complicated task. Here it is shown that the combination of vibrational spectroscopy with two-dimensional X-ray diffraction can provide unparalleled information on the changes in bone chemistry and structure associated with different bone pathologies (phosphate deficiency) and/or health conditions (pregnancy, lactation). Using a synergistic analytical approach, it was possible to trace the effect that changes in the remodelling regime have on the bone mineral chemistry and structure in normal and mineral-deficient (hypophosphatemic) mice. The results indicate that hypophosphatemic mice have increased bone remodelling, increased carbonate content and decreased crystallinity of the bone mineral, as well as increased misalignment of crystallites within the bone tissue. Pregnant and lactating mice that are normal and hypophosphatemic showed changes in the chemistry and misalignment of the apatite crystals that can be related to changes in remodelling rates associated with different calcium demand during pregnancy and lactation.

VIBRATIONAL SPECTROSCOPY, RESONANCE FRACTION AND MOLECULAR MOTION

1974 ◽  
Vol 35 (C6) ◽  
pp. C6-131-C6-137 ◽  
Author(s):  
Y. HAZONY ◽  
R. H. HERBER
Keyword(s):  
Vibrational Spectroscopy ◽  
Molecular Motion

X-ray Structure Refinement and Vibrational Spectroscopy of Ca8Gd2 (PO4)6 O2

2013 ◽  
Vol 12 (10) ◽  
pp. 719-726
Author(s):  
R. Ayadi ◽  
Mohamed Boujelbene ◽  
T. Mhiri
Keyword(s):  
Solid State ◽  
General Formula ◽  
Vibrational Spectroscopy ◽  
Powder Diffraction ◽  
Infrared Spectra ◽  
Solid State Reaction ◽  
Structure Refinement ◽  
Unit Cell ◽  
Cell Group ◽  
X Ray

The present paper is interested in the study of compounds from the apatite family with the general formula Ca10 (PO4)6A2. It particularly brings to light the exploitation of the distinctive stereochemistries of two Ca positions in apatite. In fact, Gd-Bearing oxyapatiteCa8 Gd2 (PO4)6O2 has been synthesized by solid state reaction and characterized by X-ray powder diffraction. The site occupancies of substituents is0.3333 in Gd and 0.3333 for Ca in the Ca(1) position and 0. 5 for Gd in the Ca (2) position.  Besides, the observed frequencies in the Raman and infrared spectra were explained and discussed on the basis of unit-cell group analyses.

PETROGRAPHY, MINERAL CHEMISTRY AND CLASSIFICATION OF SOME GROVE MOUNTAINS METEORITES

2014 ◽  
Vol 25 (4) ◽  
pp. 369-377 ◽  
Author(s):  
Shijie Li ◽  
Shijie Wang ◽  
Shen Liu ◽  
Xiongyao Li ◽  
Yang Li ◽  
...  
Keyword(s):  
Mineral Chemistry ◽  
Grove Mountains
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