Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/5463
Title: The crystal structure and vibrational spectroscopy of jarosite and alunite minerals
Authors: Spratt, HJ
Rintoul, L
Avdeev, M
Martens, WN
Keywords: Alunite
Spectroscopy
Raman spectroscopy
Crystal structure
Solids solutions
Sulfate minerals
Nuclear magnetic resonance
Issue Date: 1-Oct-2013
Publisher: GeoScience World
Citation: Spratt, H.J., Rintoul, L., Avdeev, M., & Martens, W. N. (2013). The crystal structure and vibrational spectroscopy of jarosite and alunite minerals. American Mineralogist, 98(10), 1633-1643. doi:10.2138/am.2013.4486
Abstract: The alunite supergroup of minerals is a large hydroxy-sulfate mineral group, which has seen renewed interest following their discovery on Mars. Numerous reviews exist concerning nomenclature, formation, and natural occurrence of this mineral group. Sulfate minerals in general are widely studied and their vibrational spectra are well characterized. However, no specific review concerning alunite and jarosite spectroscopy and crystal structure has been forthcoming. This review focuses on the controversial aspects of the crystal structure and vibrational spectroscopy of jarosite and alunite minerals. Inconsistencies regarding band assignments especially in the 1000-400 cm(-1) region plague these two mineral groups and result in different band assignments among the various spectroscopic studies. There are significant crystallographic and magnetic structure ambiguities with regards to ammonium and hydronium end-members, namely, the geometry these two ions assume in the structure and the fact that hydronium jarosite is a spin glass. It was also found that the synthetic causes for the super cell in plumbojarosite, minamiite, huangite, and walthierite are not known. © 2013, Mineralogical Society of America.
Gov't Doc #: 5402
URI: http://dx.doi.org/10.2138/am.2013.4486
http://apo.ansto.gov.au/dspace/handle/10238/5463
ISSN: 0003-004X
Appears in Collections:Journal Articles

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