Results 211 to 220 of about 73,435 (259)

Stress evolution and associated microstructure during transient creep of olivine at 1000–1200 °C

open access: green, 2018
Manuel Thieme   +4 more
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Kimberlite olivines

open access: yesInternational Kimberlite Conference Extended Abstracts: 1986, 2019
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Olivines and olivine coronas in mesosiderites

Geochimica et Cosmochimica Acta, 1980
The paper presents a study of olivines and their surrounding coronas in mesosiderites texturally and compositionally using optical and microprobe methods. Olivine composition ranges from Fo(58-92) and shows no consistent pattern of distribution within and between mesosiderites; olivine occurs as large single crystals or as partially recrystallized ...
C.E. Nehru   +3 more
openaire   +1 more source

Sintering of olivine and olivine-basalt aggregates

Physics and Chemistry of Minerals, 1984
The sintering behavior of olivine and olivine-basalt aggregates has been examined at temperatures near 1,300° C. Experimental factors contributing to rapid sintering kinetics and high-density, fine-grained specimens include: (i) the uniform dispersion of basalt throughout the specimen, (ii) a very fine, uniform particle size for the olivine powder ...
R. F. Cooper, D. L. Kohlstedt
openaire   +1 more source

Nickel–manganese variability in olivine and Al‐in‐olivine thermometry for olivine‐phyric shergottites

Meteoritics & Planetary Science, 2021
AbstractOlivine‐phyric shergottites represent primitive Martian magmas, but they commonly contain excess olivine and rarely represent primary mantle melts. Olivine chemistry, however, tracks magma evolution and preserves information on the original parent magma composition.
Sierra R. Ramsey   +3 more
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Olivine nodules in olivine nephelinite from Tokatoka, Northland

New Zealand Journal of Geology and Geophysics, 1965
Abstract Petrographic descriptions and a chemical analysis are presented of an olivine nephelinite occurring as a dike in argillaceous limestones and in regional association with a Miocene basalt-andesite-dacite igneous suite.The mineralogy and possible origin of olivine nodules carried by the nephelinite are discussed.
Philippa M. Black, R.N. Brothers
openaire   +1 more source

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