Results 181 to 190 of about 10,594 (229)
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NEAR CATION ORDERING IN PHLOGOPITES
Russian Geology and Geophysics, 1991Based on analysis of IR band outlines of natural and synthetic phlogopites from original and literature data, a model of quantitative analysis of hydroxyl bands of sheet silicates is substantiated. The revealed regular multiplicity of each N-band of the Vedder's model is determined in phlogopites, mainly, by Al entered variously tetrahedral hexagonal ...
I. L. Lapides, B. G. Ponomarev
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The crystal structure and chemistry of high-aluminium phlogopite
Mineralogical Magazine, 1995AbstractCrystal structure refinements were performed on five Al-rich phlogopite-1M crystals (1.50 ⩽ Al3+ ⩽ 1.97 atoms per formula unit) from skarns of the Predazzo and Monzoni Hills petrographic area (north-east Italy) with the aim of characterizing geometrical variation produced by Al3+ increase.
ALIETTI E +2 more
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X.—Optical Peculiarities in Phlogopite
Geological Magazine, 1909It frequently happens that micas exhibit small basal cleavage rifts of roughly circular shape, and these may be so numerous as to render opaque or feebly translucent a plate which would be otherwise quite transparent. The so-called silver-amber mica of the mica trade, a variety of phlogopite which is highly prized for its low conductivity, apparently ...
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Toxicity of Phlogopite and Muscovite In Vitro
1990Mica minerals are used for many industrial purposes. The traditional view suggests that mica dust is not harmful to the health of exposed workers (Parkes 1982), but the issue is controversial (Skulberg et al. 1985). In vitro studies suggested that mica was toxic (Holopainen et al. 1986).
M. Holopainen +3 more
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Shock‐Induced Devolatilization of Phlogopite, an Archetypical Phyllosilicate
Journal of Geophysical Research: PlanetsAbstractThe formation and evolution of rocky planets such as the Earth are marked by the heavy bombardments that dominated the first parts of the accretions. The outcomes of the large and giant impacts depend on the critical points and liquid‐vapor equilibria of the constituent materials.
X. Zhu, Y. Ye, R. Caracas
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Factors controlling the crystal structure of phlogopite have been widely investigated; but the role of electrostatic interactions, for example, has received much less attention than other factors. The purpose of the present study was to peform a single-crystal refinement of an Al-saturated phlogopite and to use that refinement to supplement crystal ...
Bujnowski, Thomas J. +2 more
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Bujnowski, Thomas J. +2 more
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The Critical Point and the vaporization of Phlogopite
Goldschmidt2023 abstracts, 2023Xi Zhu, Razvan Caracas
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