Results 1 to 10 of about 37,548 (250)

Nomenclature of pyroxenes.

open access: yesMineralogical Journal, 1988
La Sous-Commission Pyroxènes créée par la Commission Nouveaux Minéraux et Noms de Minéraux (C.N.M.M.N.) de l'Association Minéralogique Internationale (I.M.A.) présente son rapport final sur la nomenclature des pyroxènes. Les recommandations de la Sous-Commission proposées dans ce rapport ont été officiellement acceptées par la Commission.
N. Morimoto   +8 more
  +6 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

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
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

Thermobar: An open-source Python3 tool for thermobarometry and hygrometry

open access: yesVolcanica, 2022
We present Thermobar, a new open-source Python3 package for calculating pressures, temperatures, and melt compositions from mineral and mineral-melt equilibrium.
Penny Wieser   +6 more
doaj   +1 more source

The Origin and Significance of Reverse Zoning in Melilite from Allende Type B Inclusions [PDF]

open access: yes, 1984
In many Type B Allende inclusions, melilite is reversely-zoned over restricted portions of each crystal. Textural relationships and the results of dynamic crystallization experiments suggest that the reverselyzoned intervals in these Type melilites ...
Grossman, Lawrence   +3 more
core   +1 more source

Uralitization – An example from Kuusamo, Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1977
The course of events as well as the chemical changes associated with the alteration of clinopyroxenes to uralite have been studied from diabases in Kuusamo, Finland.
R. Piispanen, T. Alapieti
doaj   +1 more source

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