Temperature-dependent thermal expansivities of silicate melts: The system anorthite-diopside
نویسندگان
چکیده
منابع مشابه
Tempera~re-dependent thermal expansivities of silicate melts: The system anorthite-diopside
Ah&act-The tem~ratu~-de~ndent thermal expansivities of melts along the join ano~hite-diopside have been determined on glassy and liquid samples using a combination of calorimetry, dilatometry, and Pt double bob Archimedean densitometry. Supercooled liquid volumes and molar thermal expansivities were determined using scanning calorimetric and dilatometric measurements of properties in the glass ...
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Melt inclusions were studied in chrome diopside from the Inagli deposit of gemstones in the Inagli massif of alkaline ultrabasic rocks of potassic affinity in the northwestern Aldan shield, Yakutia, Russia. The chrome diopside is highly transparent and has an intense green color. Its Cr 2 O 3 content varies from 0.13 to 0.75 wt %. Primary and primary–secondary polyphase inclusions in chrome dio...
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[1] With the prevalence of glass and molten silicates in volcanic environments, and the important role of surface emissivity in thermal infrared (TIR) measurements, it is imperative to characterize accurately the spectral features associated with silicate glasses and melts. A microfurnace has been developed specifically for use with a laboratory Fourier transform infrared (FTIR) spectrometer to...
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New Hugoniot equation of state data for molten diopside (at 1773 K) and molten anorthite (at 1923 K) are reported to 38 and 35 GPa, respectively. The diopside data (initial density, 2.61 Mg/m s) are described by a straight-line fit to the shock velocity-particle velocity results of Us -3.30 + 1.44 Up km s -1, and our preferred fit to the anorthite data (initial density, 2.55 Mg/m s) is given by...
متن کاملShock compression of liquid silicates to 125 GPa: The anorthite‐diopside join
[1] We determined the equation of state (EOS) of three silicate liquid compositions by shock compression of preheated samples up to 127 GPa. Diopside (Di; Ca2Mg2SiO6) at 1773 K, anorthite (An; CaAl2Si2O8) at 1923 K and the eutectic composition Di64An36 at 1673 K were previously studied by shock compression to 38 GPa. The new data extend the EOS of each composition nearly to the Earth’s core‐man...
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ژورنال
عنوان ژورنال: Geochimica et Cosmochimica Acta
سال: 1992
ISSN: 0016-7037
DOI: 10.1016/0016-7037(92)90090-6