Thermal behavior of almandine at temperatures up to 1,200A degrees C in hydrogen
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F12%3A33138930" target="_blank" >RIV/61989592:15310/12:33138930 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s00269-012-0488-x" target="_blank" >http://dx.doi.org/10.1007/s00269-012-0488-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00269-012-0488-x" target="_blank" >10.1007/s00269-012-0488-x</a>
Alternative languages
Result language
angličtina
Original language name
Thermal behavior of almandine at temperatures up to 1,200A degrees C in hydrogen
Original language description
The thermally induced reductive decomposition of a natural near end-member almandine [VIII(Fe2.85Mg0.11Ca0.05Mn0.02)VI(Al1.99)IV(Si2.99)O12] and possible hydrogen diffusion into its structure have been carried out at temperatures up to 1,200°C, monitoredby simultaneous thermogravimetric analysis and differential scanning calorimetry (DSC), infrared and 57Fe Mössbauer spectroscopy and X-ray powder diffraction. Below 1,000°C, evidence for hydrogen diffusion into almandine structure was not observed. At temperatures above 1,000°C, reductive decomposition sets in, as displayed by a sharp endothermic peak at 1,055°C on the DSC curve accompanied by a total mass loss of 3.51%. We observe the following decomposition mechanism: almandine + hydrogen ? alfa-Fe +cristobalite + hercynite + water. At higher temperatures, fayalite and sekaninaite are formed by consecutive reaction of alfa-Fe with cristobalite and water, and cristobalite with hercynite, respectively. The metallic alfa-Fe phase forms
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DB - Geology and mineralogy
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PHYSICS AND CHEMISTRY OF MINERALS
ISSN
0342-1791
e-ISSN
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Volume of the periodical
39
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
311-318
UT code for WoS article
000302248500005
EID of the result in the Scopus database
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