Native alunogen: a Raman spectroscopic study of a well-described specimen

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F18%3A00000020" target="_blank" >RIV/00025798:_____/18:00000020 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/18:10374865
Result on the web
<a href="https://doi.org/10.1016/j.molstruc.2017.12.021" target="_blank" >https://doi.org/10.1016/j.molstruc.2017.12.021</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.molstruc.2017.12.021" target="_blank" >10.1016/j.molstruc.2017.12.021</a>

Result language
angličtina
Original language name
Native alunogen: a Raman spectroscopic study of a well-described specimen
Original language description
Alunogen Al2(SO4)3 · 17H2O is a common secondary mineral in terrestrial environment (acid mine drainage, volcanic or coal-fire fumaroles) and is formed through the acidic weathering of aluminosilicates. Moreover, alunogen was suggested as a part of Al-bearing deposits on Mars. This study reports the Raman spectra obtained from two natural specimens originating from the burning coal dump of Schoeller mine, Kladno, Czech Republic, alongside with an additional characterization by infrared spectroscopy, X-ray diffraction and electron microprobe. For comparison purposes, a Raman spectrum of the synthetic analogue was also obtained. Studied specimens have calculated empirical formula (Al1.99Fe3+0.01)2 (SO4)3·17H2O and the structural parameters correspond to the previously reported data for alunogen. Both natural specimens and synthetic analogue show uniform Raman spectra with no extensive band splitting in the sulfate vibration regions. The most intensive Raman band associated with the symmetric stretching vibration (ný1) is located at 992 cm-1. A multicomponent band was observable in the characteristic region of OH-related vibrations. A small variation in spectral intensity of hydroxyl bands suggests that studied specimens can possibly be slightly dehydrated.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10504 - Mineralogy

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)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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