Results 191 to 200 of about 30,445 (262)
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American Mineralogist, 2021
Oxygen fugacity is an important but difficult parameter to constrain for primitive arc magmas. In this study, the partitioning behavior of Fe3+/Fe2+ between amphibole and glass synthesized in piston-cylinder and cold-seal apparatus experiments is ...
A. Goltz +3 more
semanticscholar +1 more source
Oxygen fugacity is an important but difficult parameter to constrain for primitive arc magmas. In this study, the partitioning behavior of Fe3+/Fe2+ between amphibole and glass synthesized in piston-cylinder and cold-seal apparatus experiments is ...
A. Goltz +3 more
semanticscholar +1 more source
American Mineralogist, 2020
Amphibole fractionation during the early evolution of arc magmas has been widely inferred on the basis of distinctive geochemical fingerprints of the evolved melts, although amphibole is rarely found as a major mineral phase in arc volcanic rocks, so ...
Jin‐Sheng Zhou +3 more
semanticscholar +1 more source
Amphibole fractionation during the early evolution of arc magmas has been widely inferred on the basis of distinctive geochemical fingerprints of the evolved melts, although amphibole is rarely found as a major mineral phase in arc volcanic rocks, so ...
Jin‐Sheng Zhou +3 more
semanticscholar +1 more source
Journal of Applied Toxicology, 2020
Amphiboles are common rock‐forming minerals but when they form asbestos, they are known carcinogens. Mesothelioma mortality among miners and millers per the unit of asbestiform amphibole exposure varies significantly across cohorts when asbestos exposure
A. Wylie +3 more
semanticscholar +1 more source
Amphiboles are common rock‐forming minerals but when they form asbestos, they are known carcinogens. Mesothelioma mortality among miners and millers per the unit of asbestiform amphibole exposure varies significantly across cohorts when asbestos exposure
A. Wylie +3 more
semanticscholar +1 more source
American Mineralogist, 2020
The amphibole-plagioclase NaSi-CaAl exchange thermometer by Holland and Blundy (1994) (expression B) has been extensively applied to calcic amphibole-bearing assemblages from metamorphic and igneous rocks, whereas the more recent calibrations of the ...
J. Molina +5 more
semanticscholar +1 more source
The amphibole-plagioclase NaSi-CaAl exchange thermometer by Holland and Blundy (1994) (expression B) has been extensively applied to calcic amphibole-bearing assemblages from metamorphic and igneous rocks, whereas the more recent calibrations of the ...
J. Molina +5 more
semanticscholar +1 more source
American Mineralogist, 2020
This study reports halogen contents (F and Cl) of amphibole and phlogopite derived from mantle xenoliths and one peridotite massif, for amphibole and phlogopite megacrysts and ultramafic magmatic cumulates (hornblendites) found in alkaline volcanic rocks
Johannes G. Hecker +3 more
semanticscholar +1 more source
This study reports halogen contents (F and Cl) of amphibole and phlogopite derived from mantle xenoliths and one peridotite massif, for amphibole and phlogopite megacrysts and ultramafic magmatic cumulates (hornblendites) found in alkaline volcanic rocks
Johannes G. Hecker +3 more
semanticscholar +1 more source
Reviews in Mineralogy and Geochemistry, 2007
This chapter provides an introduction to the crystal structure, crystal chemistry and chemical composition of the amphiboles. It is not an exhaustive treatment; it is intended as an introduction to the material discussed in the following chapters.
Hawthorne FC, Oberti R
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This chapter provides an introduction to the crystal structure, crystal chemistry and chemical composition of the amphiboles. It is not an exhaustive treatment; it is intended as an introduction to the material discussed in the following chapters.
Hawthorne FC, Oberti R
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Generation of Archaean TTG Gneisses Through Amphibole‐Dominated Fractionation
Journal of Geophysical Research: Solid Earth, 2019The early continental crust is characterized by the tonalite‐trondhjemite‐granodiorite gneisses (TTG) of Archaean terrains. There is a consensus that TTGs were formed by partial melting of hydrated mafic rocks.
Peng Liou, Jing-hui Guo
semanticscholar +1 more source
Lithos, 2019
Amphibole is thought to be a key control on the differentiation of arc magmas but the fractionation of this mineral remains enigmatic because it is rarely present in erupted lavas.
Jun Wang +7 more
semanticscholar +1 more source
Amphibole is thought to be a key control on the differentiation of arc magmas but the fractionation of this mineral remains enigmatic because it is rarely present in erupted lavas.
Jun Wang +7 more
semanticscholar +1 more source
Bulletin de Minéralogie, 1978
The introduction of a fifth amphibole group, the Na-Ca-Mg-Fe-Mn-Li group, defined by 0.50 < B(Mg, Fe2+, Mn2+, Li) < 1.50 and 0.50 < = B(Ca, Na) < = 1.50 apfu (atoms per formula unit), with members whittakerite and ottoliniite, has been required by recent discoveries of B(LiNa) amphiboles.
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The introduction of a fifth amphibole group, the Na-Ca-Mg-Fe-Mn-Li group, defined by 0.50 < B(Mg, Fe2+, Mn2+, Li) < 1.50 and 0.50 < = B(Ca, Na) < = 1.50 apfu (atoms per formula unit), with members whittakerite and ottoliniite, has been required by recent discoveries of B(LiNa) amphiboles.
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Differentiating Non-Asbestiform Amphibole and Amphibole Asbestos by Size Characteristics
Journal of Occupational and Environmental Hygiene, 2008Mining or processing asbestos minerals can liberate isolated fibers or fiber bundles regulated as airborne asbestos fibers. Coarsely crystalline amphibole minerals are more common than asbestos in many geologic environments, and disturbance can result in the release of prismatic or acicular single crystals or cleavage fragments resembling asbestos ...
Martin, Harper +3 more
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