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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
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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
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Clinopyroxene dissolution in basaltic melt
Geochimica et Cosmochimica Acta, 2009Abstract The history of magmatic systems may be inferred from reactions between mantle xenoliths and host basalt if the thermodynamics and kinetics of the reactions are quantified. To study diffusive and convective clinopyroxene dissolution in silicate melts, diffusive clinopyroxene dissolution experiments were conducted at 0.47–1.90 GPa and 1509 ...
Yang Chen, Youxue Zhang
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Garnet-clinopyroxene geothermometer
Contributions to Mineralogy and Petrology, 1979A garnet-clinopyroxene geothermometer based on the available experimental data on compositions of coexisting phases in the system MgO-FeO-MnO-Al2O3-Na2O-SiO2 is as follows: $$T({\text{}}K) = \frac{{8288 + 0.0276 P {\text{(bar)}} + Q1 - Q2}}{{1.987 \ln K_{\text{D}} + 2.4083}}$$
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Potassium in Clinopyroxene Inclusions from Diamonds
Science, 1991Analytical transmission electron microscopy, electron microprobe analyses, and single-crystal x-ray diffraction data support the conclusion that high potassium contents, up to 1.5 weight percent K 2 O, of some diopside and omphacite inclusions from diamonds represent valid clinopyroxene compositions with K in solid ...
G E, Harlow, D R, Veblen
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Transcrystalline melt migration in clinopyroxene
Contributions to Mineralogy and Petrology, 2010Glass inclusions in clinopyroxene phenocrysts from La Sommata (Vulcano Island, Aeolian Arc) were reheated and submitted to a sustained thermal gradient. Each remelted inclusion undergoes a transient textural and chemical reequilibration and concomitantly begins to migrate along a crystallographic direction, at a small angle with the thermal gradient ...
Sonzogni, Yann +2 more
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Apollo 12 clinopyroxenes: Chemical trends
Earth and Planetary Science Letters, 1970Clinopyroxenes from Apollo 12 rocks studied by X ray diffraction and electron microprobe methods, noting phenocrysts, chemical composition and ...
A.E. Bence, J.J. Papike, C.T. Prewitt
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Spongy texture in mantle clinopyroxene recordsdecompression-induced melting
Lithos, 2018Spongy texture in clinopyroxene is found in mantle xenolith suites worldwide while its origin commonly is unclear. Detailed petrologic observations and major- and trace-element analysis were conducted on peridotite xenoliths with spongy clinopyroxene ...
S. Pan +6 more
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Lithos, 2018
The contributions of magmatic processes such as fractional crystallization and magma mixing to the composition of intermediate volcanics are enigmatic. This is mainly attributed to the difficulty in deciphering the composition of primary melts.
Longbo Chen +2 more
semanticscholar +1 more source
The contributions of magmatic processes such as fractional crystallization and magma mixing to the composition of intermediate volcanics are enigmatic. This is mainly attributed to the difficulty in deciphering the composition of primary melts.
Longbo Chen +2 more
semanticscholar +1 more source
Clinopyroxene from Brazilian kamafugites
Lithos, 2000Abstract The composition of pyroxenes from the two occurrences of kamafugites in Brazil — Santo Antonio da Barra and Mata da Corda — was investigated with the aim of comparing the localities and characterizing kamafugitic pyroxenes in general. Kamafugitic pyroxene is always diopside, except for late phases that can be richer in aegirine.
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Chemical Geology, 1998
Abstract Chemical diffusion of Pb under anhydrous, pO2-buffered conditions has been measured in natural clinopyroxenes of two different compositions: one a near-end-member diopside and the other of more iron-rich composition (∼40% diopside component).
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Abstract Chemical diffusion of Pb under anhydrous, pO2-buffered conditions has been measured in natural clinopyroxenes of two different compositions: one a near-end-member diopside and the other of more iron-rich composition (∼40% diopside component).
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