Литосфера, 2019 Research subject. High-magnesium rocks associated with the granitoid massifs of the Urals are represented by gabbro-diorites and their melanocratic varieties (hornblendites), as well as by diorites and quartz diorites.
S. V. Pribavkin +4 more
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Newly found rock-forming minerals in the eastern part of the Slovak Ore Mountains, Western Carpathians, Slovakia [PDF]
Acta Montanistica Slovaca, 1996 This work focuses on first occurrences of more than 20 silicate minerals in the study area. In addition to amphiboles group (six minerals), pyroxenes (three minerals), different varieties of garnets and schist silicates and some Mn-rich minerals are ...
Zábranský Frantiek, Faryad Shah Wali
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Determining the Pyroxene Mineralogies of Vestoids
The Planetary Science Journal, 2023 Bulk pyroxene compositions were calculated for a number of V-type asteroid spectra using formulae derived by Burbine et al. These formulae were derived by analyzing HED (howardite, eucrite, and diogenite) meteorites and calculate bulk Fs (mol%) and Wo ...
T. H. Burbine +3 more
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PETROGRAPHY AND MICROTEXTURAL CHARACTERISTICS OF GRANODIORITE FROM WASIMI, SOUTHWESTERN NIGERIA [PDF]
Earth Science Malaysia, 2020 Rock samples of granodiorite from Wasimi were studied in detail to determine the minerals, mineral associations and the different micro-texture present in order to unravel the processes that were involved during the cooling of the magma.
E. J. Oziegbe +2 more
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A petrological, mineralogical and chemical analysis of the lunar mare basalt meteorites LaPaz Icefield 02205, 02224 and 02226 [PDF]
, 2006 LaPaz Icefield (LAP) 02205, 02226, and 02224 are paired stones of a crystalline basaltic lunar meteorite with a low-Ti (3.21–3.43% TiO2) low-Al (9.93–10.45% Al2O3), and low-K (0.11–0.12% K2O) composition.
Anand +38 more
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Magnetic Anisotropy in Single Crystals: A Review
Geosciences, 2018 Empirical relationships between magnetic fabrics and deformation have long served as a fast and efficient way to interpret rock textures. Understanding the single crystal magnetic properties of all minerals that contribute to the magnetic anisotropy of a
Andrea R. Biedermann
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Cosmogenic 3He exposure dating in mafic rocks by “Virtual mineral separation” of pyroxene [PDF]
GeochronologyWe describe a “virtual mineral separation” method for measuring the cosmogenic 3He concentration in pyroxene in mafic rocks that consist mainly of plagioclase and pyroxene, without physically separating the minerals. This approach is significantly faster
M. Bergelin +4 more
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Trace element geochemistry of ordinary chondrite chondrules: the type I/type II chondrule dichotomy [PDF]
, 2015 We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations ...
Alard, Olivier +2 more
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MINERAL CHEMISTRY OF FELSIC EXTRUSIVE ROCKS OF THE EAST BAYMAK AREA OF THE SOUTHERN URALS AND APROBLEM OF HYBRIDISM IN THEIR GENESIS [PDF]
Минералогия, 2018 The Baymak ore district hosts numerous small Au-rich massive sulfide polymetallic deposits, which is a distinctive feature in comparison with other regions of the West-Magnitogorsk zone (Seravkin, 1986). According to geophysical data, the Baymak block is
A.M. Kosarev +3 more
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Paragenesis relations study of wollastonite – pyroxene – garnet mineral assemblage in Vejeh Skarn (North East Isfahan) [PDF]
پترولوژی, 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
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