Results 11 to 20 of about 13,826 (203)

Intermediate Infrared Spectroscopy of Pyroxene: Determination of Ca-Mg-Fe Composition in the 4–8 Micron Wavelength Range

open access: yesEarth and Space Science, 2023
Although pyroxene has been detected remotely across the Solar System, limited information is available from infrared remote sensing about the Mg‐Fe composition of pyroxene, and distinguishing between augite (20 < CaSiO3 < 45) and diopside‐hedenbergite ...
Christopher H Kremer   +2 more
exaly   +2 more sources

An experimental study of pyroxene crystallization during rapid cooling in a thermal gradient: application to komatiites [PDF]

open access: yesSolid Earth, 2014
To investigate the crystallization of pyroxene in spinifex-textured komatiites, we undertook a series of experiments in which compositions in the CaO-MgO-Al2O3-SiO2 CMAS system were cooled rapidly in a thermal gradient.
S. Bouquain   +3 more
doaj   +2 more sources

Paragenesis relations study of wollastonite – pyroxene – garnet mineral assemblage in Vejeh Skarn (North East Isfahan) [PDF]

open access: yesپترولوژی, 2017
The Vejeh Skarn is located at 70 km Northeast of Isfahan. The Vejeh intrusive body with granodiorite to tonalite composition have been intruded the lower Cretaceous marl carbonate which caused the formation of skarn rocks.
Ahmad Jamshidzaii   +2 more
doaj   +2 more sources

Pressure‐Induced sp 2 ‐sp 3 Transitions in Carbon‐Bearing Phases

open access: yesGeophysical Monograph Series, Page 1-9., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey S. Lobanov   +1 more
wiley  

+6 more sources

Reproduction Experiments of Radial Pyroxene Chondrules Using a Gas-jet Levitation System under Reduced Conditions [PDF]

open access: yesThe Astrophysical Journal
Reproduction experiments of radial pyroxene (RP) chondrules were carried out using an Ar–H _2 or Ar gas-jet levitation system in a reducing atmosphere in order to simulate chondrule formation in the protoplanetary disk.
Kana Watanabe   +2 more
doaj   +2 more sources

Phlogopite and associated minerals from Permian minettes in Devon, South England [PDF]

open access: yesBulletin of the Geological Society of Finland, 1985
Electron-microprobe analyses were made of mica, clinopyroxene, alkali feldspar, Fe‒Ti oxides and apatite in Permian minettes from Hannaborough Quarry, Killerton Park and Loxbeare Farm, south Devon, England.
A.P. Jones, J.V. Smith
doaj   +1 more source

Single Crystal Growth and Physical Properties of Pyroxene CoGeO3

open access: yesCrystals, 2021
We report on the synthesis and physical properties of cm-sized CoGeO3 single crystals grown in a high pressure mirror furnace at pressures of 80 bar.
Li Zhao   +8 more
doaj   +1 more source

Features of olivine crystallization in ordinary chondrites (Saratov meteorite): geochemistry of trace and rare earth elements

open access: yesЗаписки Горного института, 2022
The paper discusses the geochemistry of major (EPMA) and trace (SIMS) elements in olivine of porphyritic, nonporphyritic chondrules, and the matrix of equilibrated ordinary chondrite Saratov (L4).
Kristina G. Sukhanova   +2 more
doaj   +1 more source

Tracking timescales of magma reservoir recharge through caldera cycles at Santorini (Greece). Emphasis on an explosive eruption of Kameni Volcano

open access: yesFrontiers in Earth Science, 2023
Pre-eruptive processes and their timescales are critical information for risk management at explosive volcanoes, and Santorini caldera (Greece) provides an excellent context in which to approach this subject. We ask two questions. First, are pre-eruptive
Antonio Polo-Sánchez   +7 more
doaj   +1 more source

Magmatic characteristics and crystallization condition of the Gasht- Masuleh gabbros (North of Iran) based on clinopyroxene and orthopyroxene composition [PDF]

open access: yesپترولوژی, 2019
The Alborz Range, as a part of the Alpine-Himalayan orogeny, formed during the Cimmerian orogeny due to northward movements of the Central Iran micro-plate towards Eurasia.
Leila Rezaei   +2 more
doaj   +1 more source

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