Results 11 to 20 of about 177 (132)

Avaliação preliminar do emprego de arenito zeolítico da região nordeste do Brasil como material pozolânico para cimento Portland Preliminary evaluation of sandstones from northeastern Brazil with pozzolanic properties for Portland cement

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, R. S. Angélica, M. S. Barata   +2 more
doaj   +1 more source

Stellerite-stilbite and calcite paragenesis in a fracture cavity hosted by andesitic volcaniclastic rocks from the Timok magmatic complex [PDF]

Journal of Mining and Metallurgy. Section A: Mining
The Timok Magmatic Complex (TMC) is part of the Apuseni-Banat-Timok-Srednogorie magmatic arc within the Tethyan metallogenic belt, hosting world-class porphyry and epithermal copper-gold deposits.
Medic D., Štirbanović Z., Banješević M., Nedelkovski V., Stanković S., Cvetković A., Đorđievski S.   +6 more
doaj   +1 more source

Minerals from Macedonia. XXX. Complementary use of vibrational spectroscopy and X-ray powder diffraction for spectra-structural study of some cyclo-, phyllo- and tectosilicate minerals. A review

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, Antonieta Middea, Paulo R.P. Paiva, Alberto C.C. Bernardi, Nélio G.A.M. Rezende, Milton Baptista-Filho, Marcelo G. Silva, Helion Vargas, Helio S. Amorim, Fernando de Souza-Barros   +9 more
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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, Rahim Masumi, Ali Asghar Calagari   +2 more
doaj   +3 more sources

Coupling Solvay process with carbon mineralization in stilbite: an innovative approach for carbon dioxide storage

Frontiers in Energy Research
Geological 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, Nirlipta P. Nayak, Pratichi Sangwan, Dia Kumar, Gaurav Sharma   +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, T. Sani, Y. Chebude, G. Fetter, P. Bosch, I. Diaz   +5 more
doaj   +1 more source

Genesis of diagenetic zeolites and their impact on reservoir formation in the Middle Permian Lower-Wuerhe Formation of the Mahu Sag, Junggar Basin, Northwest China

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, Lu Zhou, Jin Liu, Erting Li, Benzhong Xian   +4 more
doaj   +1 more source

Goosecreekite from the Bulatovo stone quarry (South Urals): the first find in Russia [PDF]

Минералогия
A 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, N.V. Chukanov, V.A. Popov, A.M. Kuznetsov   +3 more
doaj   +1 more source

Scientific results from the deepened Lopra-1 borehole, Faroe Islands: The regional distribution of zeolites in the basalts of the Faroe Islands and the significance of zeolites as palaeotemperature indicators [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2006
The first maps of the regional distribution of zeolites in the Palaeogene basalt plateau of the Faroe Islands are presented. The zeolite zones (thomsonite-chabazite, analcite, mesolite, stilbite-heulandite, laumontite) continue below sea level and reach ...
Jørgensen, Ole
doaj