نتایج جستجو برای: ilmenite particles

تعداد نتایج: 157154  

2006
J. H. Wittke R. L. Korotev A. J. Irving

NWA 2700 and NWA 2977 Paired With NWA 773: NWA 2700 is a 31.7 gram stone consisting of small gabbro clasts plus regolith breccia matrix (see Figure 1). The olivine gabbro contains ~50 vol.% olivine (Fa29.3-34.7; FeO/MnO = 94), pigeonite (Fs2228.3Wo5.6-10; FeO/MnO = 52), augite (Fs13.2Wo38.5), plagioclase and minor maskelynite (An89), Ba-rich alkali feldspar (Or92An4, BaO up to 8.9 wt.%), Crspin...

2008
Yuichi Michiue

Single crystals of the title compound, tetra-magnesium dianti-monate(V), were obtained by the slow cooling method with K(2)CO(3). The structure is isotypic with ilmenite, which is constructed by the alternate stacking of layers consisting of metal-oxygen coordination octa-hedra. In each layer, the octa-hedra are connected by sharing edges so as to make holes. One of the two non-equivalent metal...

Journal: :Journal of the American Chemical Society 2010
Cathleen A Hoel José Manuel Gallardo Amores Emilio Morán Miguel Angel Alario-Franco Jean-François Gaillard Kenneth R Poeppelmeier

The corundum-type In(2-2x)Zn(x)Sn(x)O(3) solid solution (cor-ZITO, x ≤ 0.7) was synthesized at 1000 °C under a high pressure of 70 kbar. cor-ZITO is a high-pressure polymorph of the transparent conducting oxide bixbyite-In(2-2x)Zn(x)Sn(x)O(3) (x ≤ 0.4). Analysis of the extended X-ray absorption fine structure suggests that significant face-sharing of Zn and Sn octahedra occurs, as expected for ...

Journal: :Science 1970
I Adler L S Walter P D Lowman B P Glass B M French J A Philpotts K J Heinrich J I Goldstein

Plagioclase feldspar, clinopyroxene, and ilmenite in a polished thin section of a type A crystalline rock were analyzed. The clinopyroxene grains are compositionally variable, and both high Ca and low Ca phases are present. The plagioclase is compositionally homogeneous. The ilmenite is chemically homogeneous except for occasional, small areas of high local chromium concentration. Accessory min...

GOUDARZI M., , TAVAKOLI A. H., ,

The synthesis of advanced materials from low cost minerals concentrates is a new field of study that has great potential applications. In this paper, the effect of milling time on the temperature of initiation and amount of carbothermic reduction of ilmenite has been investigated. The stoichiometric molar ratio (1:4) of ilmenite to graphite was mixed and mechanically activatedfor 30-70 hours at...

Journal: :Minerals 2021

The in-situ utilization of lunar helium-3 resource is crucial to manned landings and base construction. Ilmenite was selected as the representative mineral which preserves most in soil. implantation ions into ilmenite simulated figure out concentration profile trapped ilmenite. Based on obtained profile, thermal release model for molecular dynamics established investigate diffusion optimal heat...

میر محمدی, میر صالح , کنعانیان, علی,

: Detailed studies on micro-texture and microprobe analysis of Fe-Ti oxides from Qareaghaj mafic-ultramafic intrusion (QMUI) is the basis of this investigation. The QMUI is mainly composed of non-mineralized mafic and Fe-Ti-P-rich ultramafic rocks (FTP). The FTP with high proportion of ilmenite (~11-19 modal %) and magnetite (~2-13 modal %) show an unusual bulk composition. Fe-Ti oxides are div...

2003
R. A. Zeigler L. A. Haskin R. L. Korotev B. L. Jolliff J. J. Gillis

Introduction: The A16 (Apollo16) site in the lunar nearside highlands is 220 km from the nearest mare. Thus it is no surprise that mare basalt samples are uncommon at the site. Here, we present the petrography and geochemistry of 5 new mare basalt samples found at the A16 site. We also discuss possible provenances of all A16 mare basalt samples using high-resolution global data for the distribu...

2006
N. Shirai

Introduction: It is well known that shergottites have a large variation of rare earth elements (REEs) abundance patterns and isotopic compositions. Jones [1] and Borg and Draper [2] suggest that light REEs (LREEs)-enriched shergottites resulted from mixing of a LREEs-enriched component with their parental magma. The LREEsenriched component is thought to be either Martian crust [1] or a KREEP-li...

Journal: :Journal of the Mineralogical Society of Japan 1953

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