نتایج جستجو برای: ilmenite particles

تعداد نتایج: 157154  

Journal: :Sinergi 2023

This article aimed to separate ilmenite (FeTiO3) mineral from tin tailing applying a single splitter IRMS (Induced Roll Magnetic Separator). Ilmenite is the substantial main source for TiO2. work used air table middling feeding. The components of feeding using grain counting analysis were found as follows: cassiterite (48.61%), (21.36%), monazite (18.56%), pyrite (4.60%), zircon (5.85%), quartz...

2002
Malcolm J. Rutherford Wes Hildreth

New analytical and experimental data constrain the storage and equilibration conditions of the magmas erupted in 1912 from Novarupta in the 20th century’s largest volcanic event. Phase relations at H2O+CO2 fluid saturation were determined for an andesite (58.7 wt% SiO2) and a dacite (67.7 wt%) from the compositional extremes of intermediate magmas erupted. The phase assemblages, matrix melt com...

Journal: :Journal of Materials Chemistry C 2023

High-pressure ilmenite MnVO 3 shows a semiconductor to metal transition on heating that resembles of VO 2 . Clues correlation and band effects are observed suggesting borderline case between Mott Peierls scenarios.

W. Mammo Ghebre

The Bikilal layered gabbro-complex is composed of zones/layers of olivine/ pyroxene gabbro and hornblende gabbro. Within the hornblende gabbro, repeated lens-like thin and elongated bodies of hornblendite are found intimately associated with massive and disseminated ilmenite-magnetite bodies, in places with apatite. Petrological examination of the hornblende gabbro shows 50-55% hornblende, 40-4...

Journal: :Science 1997
Darling Chou Bodnar

High-pressure (0.8 gigapascals) granulite facies garnet from Gore Mountain, New York, hosts multiple solid inclusions containing the low-pressure silica polymorph cristobalite along with albite and minor ilmenite. Identification of cristobalite is based on Raman spectra, electron microprobe analysis, and microthermometric measurements on the alpha/beta phase transformation. The cristobalite plu...

Journal: :Brazilian Journal of Geology 2022

The mineral chemistry of diamond indicator minerals is used to trace mineralizations in primary rocks such as lamproites/kimberlites and secondary deposits. Subcalcic garnets magnesian ilmenites are both associated with the potential described many deposits Alto Paranaíba Igneous Province where several kimberlitic pipes alluvial occur. Our study was conducted on Romaria deposit (Brazil), garnet...

2006
Yi Wang Lianxing Wen Donald Weidner Yumei He

[1] We constrain SH wave velocity structures near the 660-km discontinuity beneath South America and northeast Asia, using triplicated phases near the discontinuity recorded in the epicentral distance range of 10 –35 for three deep events. We then explore mineralogical and compositional models appropriate for explaining the inferred seismic structures between the two regions. SH velocity struct...

Journal: :Mineral economics 2021

Heavy minerals have become an essential commodity in modern-day technology. The objective of this study is to examine the current status heavy mineral industry Sri Lanka. present also examines economic viability potential placer deposits, based on geochemical data. Field investigations suggested occurrence as beach-placers, and inland/raised beach deposits along coastline Geochemical results sh...

Journal: :Materials Science Poland 2022

Abstract This work reported the successful synthesis of ilmenite-spinel (1 − x )NiTiO 3 - MnFe 2 O 4 ( = 0, 0.05 and 0.10) composites by a simple sol-gel method. Phase formation was analyzed X-ray diffraction All synthesized samples formed diphasic ilmenite-ferrite without any trace impurity or intermediate phase. The optical properties were characterized diffuse reflectance UV–visible spectros...

Journal: :IOP conference series 2023

Abstract Ilmenite is found in the form of iron sand with reserves 927,315,827 tons spread across several regions Indonesia, including Banten which has seven million sand. This mineral can be used as a raw material for making TiO 2 pigments. The problem faced use its complex structure causes difficulties at processing stage. synthesis from ilmenite ore commonly sulfate process and chloride proce...

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