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Olivine composition in chondrites
Geochimica et Cosmochimica Acta, 1963Abstract Olivine is almost omnipresent in chondrites, being absent only in the enstatite chondrites and a few carbonaceous chondrites. In most chondrites it is the dominant mineral. Since it shows a considerable range of composition, which is directly related to the FeO MgO ratio in the individual meteorite, and since its composition is ...
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1991
The diffusion phenomena of ions in olivine are not only of considerable geophysical interest, but are also of great interest in geochemical and cosmochemical studies. In order to discuss the conditions in the mantle of the Earth, we must understand the mechanisms which control the properties of the mantle minerals.
Masana Morioka, Hiroshi Nagasawa
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The diffusion phenomena of ions in olivine are not only of considerable geophysical interest, but are also of great interest in geochemical and cosmochemical studies. In order to discuss the conditions in the mantle of the Earth, we must understand the mechanisms which control the properties of the mantle minerals.
Masana Morioka, Hiroshi Nagasawa
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Nature, 1974
THE oxidation of olivine is a commonly recognised natural phenomenon and has been investigated experimentally using crystallographic and thermodynamic techniques1,2. It is generally believed that the oxidation of the olivine occurs by initial breakdown of the fayalite component, and subsequent reaction with the forsterite component, to give magnetite ...
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THE oxidation of olivine is a commonly recognised natural phenomenon and has been investigated experimentally using crystallographic and thermodynamic techniques1,2. It is generally believed that the oxidation of the olivine occurs by initial breakdown of the fayalite component, and subsequent reaction with the forsterite component, to give magnetite ...
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On the slip systems of olivine
Journal of Geophysical Research, 1975The slip systems of orthorhombic olivine can be advantageously described in the almost perfect hexagonal close-packed lattice of the oxygen ions whose basal plane corresponds to (100). Possible dissociations of dislocations in prism planes of the oxygen lattice are given in a hard sphere model.
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1973
Olivines (Fe, Mg, Ca)2Si2O4 are important constituents of many igneous and metamorphic rocks. The thermodynamic properties of olivines have been studied recently by several workers (Kitayama and Katsura, 1968; Nafziger and Muan, 1967; Olsen and Bunch, 1970; Warner, 1971).
Surendra K. Saxena, Surendra K. Saxena
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Olivines (Fe, Mg, Ca)2Si2O4 are important constituents of many igneous and metamorphic rocks. The thermodynamic properties of olivines have been studied recently by several workers (Kitayama and Katsura, 1968; Nafziger and Muan, 1967; Olsen and Bunch, 1970; Warner, 1971).
Surendra K. Saxena, Surendra K. Saxena
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Electrical conductivity of olivine
Journal of Geophysical Research, 1972The electrical conductivity σ of single crystals of olivine of 0, 7.7, 8.2, 9.4, and 26.4 mole % fayalite has been measured up to 1200°C and 7.5 kb. Samples from different localities with approximately the same fayalite content and impurity levels have electrical conductivities that differ by 2–3 orders of magnitude.
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Change of electrical conductivity of olivine associated with the olivine-spinel transition
Physics of the Earth and Planetary Interiors, 1991Abstract The electrical conductivity σ of (Mg1−x,Fex)2SiO4 was measured under the stable conditions for olivine (α-phase) and spinel phases (β- and γ-phases). The present measurements cover much lower iron-content olivines (X = 0.28 and 0.10) and higher temperatures (∼ 1000 to 1200°C) than previous works.
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Plasticity of Olivine in Peridotites [PDF]
, 1976 Prior to about 20 years ago peridotites were almost universally considered to have crystallized from an ultramafic magma to essentially their present microstructure. This mistaken impression persists today in that virtually all textbooks continue to classify these rocks as igneous.
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