Results 101 to 110 of about 7,479 (200)

Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland [PDF]

, 2017
Mineral assemblages and chemical compositions of minerals found in impure dolomitic marbles embedded in gneisses and migmatites of the E. Greenland Caledonian fold belt (Scoresby Sund) suggest that the marbles were metamorphosed near 630 °C at 5 kb ...
BUCHER-NURMINEN, K.
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Short-range order in synthetic aluminous tremolites: An infrared and triple-quantum MAS NMR study

, 2000
Fourier-transform infrared spectra (FTIR) were recorded on a series of synthetic amphiboles along the join Ca1.8Mg5.2Si8O22(OH)2–Ca1.8(Mg4.2Al)(Si7Al)O22(OH)2.
Della Ventura, Giancarlo, Hawthorne, Franck C., Jenkins, David M., Liu, Shuangxi, Robert, Jean-Louis, Welch, Mark D.   +5 more
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Mineral reconnaissance at the Highland boundary with special reference to the Loch Lomond and Aberfoyle areas [PDF]

, 1983
Serpentinite bodies at the Highland Boundary in the Loch Lomond and Aberfoyle areas are extensively altered to magnesite-quartz and ferroan-dolomite-quartz rocks. Silicification was probably initiated before conversion to carbonate.
Fortey, N.J., Grout, A., Henderson, W.G., Johnson, C.E.   +3 more
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Insights Into Subduction‐Zone Fluid‐Rock Interactions and Carbon Cycling From Magnesium Isotopes of Subducted Ophiolitic Mélanges in the Arabian‐Nubian Shield

Geochemistry, Geophysics, Geosystems
Fluid‐rock interactions play an important role in element mobilization, mass transfer, and formation of critical metals in subduction zones. However, tracking the multistage fluid‐rock interactions within subduction channels remains elusive.
Yuan‐Ru Qu, Sheng‐Ao Liu, Hamed Gamaleldien   +2 more
doaj   +1 more source

Evaluation of some ceramic clays from Zambia [PDF]

, 1993
This reports details the technical evaluation of ceramic clays collected during visits to Zambia in 1990 and 1991 by the author (Clive Mitchell). The clay samples included: Choma kaolin (Southern Province), Twapia kaolin (Copperbelt Province), Kapiri ...
Mitchell, C.J.
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Voyager and the origin of the solar system [PDF]

A unified model for the formation of regular satellite systems and the planetary system is outlined. The basis for this modern Laplacian theory is that there existed a large supersonic turbulent stress arising from overshooting convective motions within ...
Prentice, A. J. R.
core   +1 more source

Minerales asbestiformes en vermiculitas del sector centro-occidental de la provincia de Córdoba [PDF]

, 2015
Se estudiaron dos minas de vermiculita de la provincia de Córdoba: Mauro y La Isla. La primera (32º16'39,6 S y 64º52'15 O), se localiza en el flanco oriental del cerro Negro en la sierra de Comechingones, 60 km al oeste de la localidad de La Cruz, en ...
Bonalumi, Aldo, Lescano, Leticia, Maiza, Pedro, Marfil, Silvina Andrea, Sfragulla, Jorge   +4 more
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High P‐T Sound Velocities of Amphiboles: Implications for Low‐Velocity Anomalies in Metasomatized Upper Mantle

Geophysical Research Letters
Metasomatized mantle xenoliths containing hydrous minerals, such as amphiboles, serpentine, and phlogopite, likely represent the potential mineralogical compositions of the metasomatized upper mantle, where low seismic velocities are commonly observed ...
Wen‐Yi Zhou, Ming Hao, Dongzhou Zhang, Przemyslaw Dera, Soisiri Charin, Jin S. Zhang   +5 more
doaj   +1 more source

The OH-F substitution in synthetic pargasite at 1.5 kbar, 850 °C.

, 2000
Amphiboles were synthesized at 1.5 kbar PH2O and 850 °C along the join pargasite-fluoropargasite. Structural variations in the amphibole as a function of F have been characterized by a combination of SEM-EDS, X-ray powder diffraction, and infrared ...
C. Hawthorne, Franck, Della Ventura, Giancarlo, Robert, Jean-Louis, Welch, Mark D.   +3 more
core   +1 more source

A postmortem case control study of asbestos burden in lungs of malignant mesothelioma cases. [PDF]

J Transl Med, 2023
Visonà SD, Bertoglio B, Favaron C, Capella S, Belluso E, Colosio C, Villani S, Ivic-Pavlicic T, Taioli E.   +8 more
europepmc   +1 more source