Results 21 to 30 of about 416 (180)

Analytical database of Martian minerals (ADaMM): Project synopsis and Raman data overview

open access: yesJournal of Raman Spectroscopy, Volume 53, Issue 3, Page 364-381, March 2022., 2022
The Analytical Database of Martian Minerals (ADaMM) provides the scientific community with a comprehensive set of spectroscopic and diffractometric data collected from a wide collection of mineral phases relevant for Mars exploration. As much of the given data have been collected by analytical prototypes emulating the spectroscopic tools onboard ...
Marco Veneranda   +12 more
wiley   +1 more source

In situ and micro‐Raman spectroscopy for the identification of natural Sicilian zeolites

open access: yesJournal of Raman Spectroscopy, Volume 53, Issue 3, Page 525-539, March 2022., 2022
Samples of Sicilian zeolites (i.e., analcime, chabazite, natrolite and phillipsite) from a private collection were tested with portable and fixed Raman spectrometers, equipped with 532‐ and 785‐nm laser sources. Local outcrops on the Eastern Sicilian coast are also tested with portable devices.
Claudio Finocchiaro   +9 more
wiley   +1 more source

Constraints on the formation of carbonates and low‐grade metamorphic phases in the Martian crust as a function of H2O‐CO2 fluids

open access: yesMeteoritics &Planetary Science, Volume 57, Issue 1, Page 77-104, January 2022., 2022
Abstract Low‐grade metamorphic hydrous minerals and carbonates occur in various settings on Mars and in Martian meteorites. We present constraints on the stability of prehnite, zeolites, serpentine, and carbonates by modeling the influence of H2O‐CO2 fluids during low‐grade metamorphism in the Martian crust using compositions of a Martian basalt and an
Julia Semprich   +3 more
wiley   +1 more source

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

open access: yesCerâmica, 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

Dry matter production and nutrient accumulation after successive crops of lettuce, tomato, rice, and andropogongrass in a substrate with zeolite Produção de matéria seca e acúmulo de nutrientes após cultivos sucessivos com alface, tomate, arroz e capim andropogon em substrato com zeólita

open access: yesRevista Brasileira de Ciência do Solo, 2010
Zeolites are hydrated crystalline aluminosilicate minerals of natural occurrence, structured in rigid third dimension net that can be used as slow release plant-nutrient source. The main objective of this study was to evaluate the effects of plant growth
Alberto C. de Campos Bernardi   +5 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

open access: yesMacedonian 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

open access: yesAnais 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

Synthesis of Polyhydroquinoline Catalyzed by Cu nps/ Stilbite Zeolite

open access: yes, 2022
In the present research article, a new method to synthesize polyhydroquinoline derivative is discussed. Polyhydroquinoline derivative synthesized using catalyst Cu nps/stilbite zeolite.
S. Gadekar, Lakshman
core   +1 more source

Geochemical aspects of Kejal kaolin deposit, northwest of Hashtjin, Ardebil province

open access: yesJournal 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

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

open access: yesFrontiers 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   +4 more
doaj   +1 more source

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