Results 51 to 60 of about 416 (180)
Structural and spectroscopic studies of alkali-metal exchanged stilbites [PDF]
Microporous and Mesoporous Materials, 2016 Abstract The structural, infrared (IR) and Raman spectroscopic properties of alkali-metal exchanged (Na+, K+, Rb+, Cs+) zeolites with the stilbite (STI) framework have been studied by Rietveld analysis of high-resolution synchrotron X-ray powder diffraction data, micro-Raman and synchrotron IR spectroscopy at ambient conditions.
Yanmei Ma +4 more
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, 2023 Not AvailableIn-depth mineralogical understanding and characterization are necessary to explore potential applications of clinoptilolites. In this study, the clinoptilolite collected from quarries and identified as stilbite microscopically and ...
D. Arunkumar, K. K. Krishnani, Neeraj Kumar, B. Sarkar,· A. K. Upadhyay, P. B. Sawant, N. K. Chadha and R. Abisha
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Stilbite from bomeki, Miyagi Prefecture, Japan.
The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 1981 A calcium-rich stilbite occurs in the amygdaloidal cavity of the Upper Miocene dacite dyke at Bomeki, Miyagi Town, Miyagi Prefecture. Chemical analysis gave SiO2 56.38, Al2O3 15.89, CaO 7.94, Na2O 1.08, K2O.10, H2O+16.23 and H2O- 1.93wt%. Fe, Mn, Mg and P were not detected. This corresponds to Na1.00K.06Ca4.07Al8.96Si26.98O72•28.98H2O.
TANIGUCHI, MASAHIRO, ABE, TOMOHIKO
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Dissolution Kinetics of Stilbite at Various Temperatures under Alkaline Conditions
, 2010 Experiments measuring the dissolution rates of stilbite (NaCa [Al Si O ].14H O) in pH-buffered solutions were 2 5 13 36 2 performed in batch reactors at 4, 25, 40 and 60 oC. The pH conditions of the buffer solutions ranged from 8.5 to 12.5.
ET Glover +5 more
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Controlled growth of nano-hydroxyapatite on stilbite: Defluoridation performance
, 2017 In Ethiopia, fluoride-contaminated groundwater used for drinking has become a matter of great concern, particularly in the Rift Valley region, due to its serious health hazard (fluorosis).
Chebude, Yonas +11 more
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Amygdaloidal and other Cavity Filling Zeolites of Kuh-e-Aradeh, Central Iran [PDF]
Journal of Sciences, Islamic Republic of Iran, 2004 Amygdaloidal, cavity- and fracture-filling zeolites in Eocene volcanic rocks from the Kuh-e-Aradeh of southern Kahrizak, in the northernmost part of Central Iran have been studied in some detail by optical, chemical analysis, SEM, and XRD techniques. The
doaj
Minería y Geología, 2018 The research aims at evaluating the mineral potential of the basaltic lavas of the Movene Formation, to host microcrystalline zeolites. In order to attain this goal the methods of digital image processing, geological traversing and mineralogical analysis
Elmidio Estévez-Cruz +1 more
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, 2022 Mankind has been aware of zeolites since 1756, when the Swede, Axel Fredrik Cronstedt (1722–1765), observed the strange behavior of a certain natural mineral (probably stellerite with some amounts of stilbite) [...
Roman Bulánek
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, 2019 This contribution reports the preparation of a composite material based on a natural zeolite rich in calcium, stilbite, on which surface nanosized hydroxyapatite is grown under controlled conditions.
Chebude, Yonas +3 more
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Zeolites in the Granitic Rocks of Chugoku District, Southwest Japan [PDF]
, 1994 Ca-zeolites such as laumontite, stilbite and chabazite were found in the granitic rocks of both magnetite and ilmenite series of late Cretaceous to Tertiary age developed widely in the Chugoku district. These zeolites occur (1) in veins of various scale,
KITAGAWA, Ryuji +4 more
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