Results 21 to 30 of about 194 (151)
Cerâmica, 2011 As zeolitas possuem atividade pozolânica normalmente sem a necessidade de ativação térmica, por isto têm sido empregadas na produção de cimento e concreto hidráulicos desde a época do império romano.
M. S. Picanço +2 more
doaj +1 more source
Macedonian Journal of Chemistry and Chemical Engineering, 2016 A review of the results of the complementary use of vibrational spectroscopy (infrared and Raman) and X-ray powder diffraction in the process of identification and spectra–structure correlation of some cyclo-, phyllo- and tectosilicate minerals ...
Gligor Jovanovski, Petre Makreski
doaj +1 more source
Nutrient release by a Brazilian sedimentary zeolite
Anais da Academia Brasileira de Ciências, 2009 This report describes the characterization of a sedimentary occurrence from the Parnaíba Basin, Brazil, containing the zeolite stilbite intertwined with smectitic clay mineral.
Marisa B.M. Monte +9 more
doaj +1 more source
Geochemical aspects of Kejal kaolin deposit, northwest of Hashtjin, Ardebil province
Journal of Economic Geology, 2012 Kajal kaolin deposit is located ~20 km northwest of Hashtjin, Ardebil province. Field evidence and laboratory investigations show that the deposit is an alteration product of ignimbrites, tuffs, and trachy-andesites of Eocene age.
Ali Abedini +2 more
doaj +3 more sources
Frontiers in Energy ResearchGeological storage of CO2 through carbon mineralization is an efficient approach to reverse climate change, especially in stilbite-bearing formations such as basalts. However, integrated process routes that directly couple industrial CO2 utilization with
Rahul Kumar Singh +4 more
doaj +1 more source
Comparison of the defluoridation capacity of zeolites from Ethiopia and Mexico
Bulletin of the Chemical Society of Ethiopia, 2015 Fluorosis, either dental or skeleton, is often due to the high fluoride content of well waters. In this work, using solutions which contain different amounts of fluoride, natural zeolites from Ethiopia and Mexico were tested.
M. Adem +5 more
doaj +1 more source
Energy Exploration & Exploitation, 2020 Zeolites are important diagenetic minerals in petroleum reservoirs and have complex impacts on reservoir quality. To highlight this critical and challenging issue, we conduct a case study in the Middle Permian Lower-Wuerhe Formation in the Mahu Sag ...
Jian Wang +4 more
doaj +1 more source
Goosecreekite from the Bulatovo stone quarry (South Urals): the first find in Russia [PDF]
МинералогияA rare zeolite goosecreekite, CaAl2Si6O16 • 5H2O, was found for the first time in Russia in granitic pegmatites of the Bulatovo stone quarry (Chelyabinsk region, South Urals).
A.V. Kasatkin +3 more
doaj +1 more source
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.Mordenite is a naturally occurring zeolite mineral that is the seventh most common zeolite mineral globally, forming at low temperatures (≥100°C) in hydrothermal systems. In New Zealand, extensive deposits of mordenite are commonly associated with areas of hydrothermal alteration, particularly in the Coromandel and Taupo Volcanic Zones.
Ayrton R. Hamilton +6 more
wiley +1 more source
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.
MASAHIRO TANIGUCHI, TOMOHIKO ABE
openaire +2 more sources