Sulphate efflorescent minerals from El Jaroso Ravine, Sierra Almagrera – an SEM and Raman spectroscopic study
Frost, Ray L., Weier, Matt L., Martinez-Frias, Jesus, Rull, Fernando, & Reddy, B. Jagannadha (2007) Sulphate efflorescent minerals from El Jaroso Ravine, Sierra Almagrera – an SEM and Raman spectroscopic study. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 66(1), pp. 177-183.
Two sulphate efflorescent evaporate mineral samples from Jaroso, Spain have been studied by scanning electron microscopy and Raman spectroscopy. SEM by comparison with known minerals shows the evaporite mineral is a mixture of halotrichite and jarosite, whilst the oxidised mineral is predominantly jarosite. SEM characterises the halotrichite as long narrow crystals and the jarosite as distorted rhombohedral crystals. Raman spectra of the sulphates of K, Mg, Fe(II), Fe(III) are compared with the spectra of halotrichite, jarosite and the two sulphate efflorescent samples. The efflorescent sample was proven by Raman spectroscopy to be a mixture of halotrichite and jarosite and the oxidised efflorescent sample to be jarosite and a complex mixture of sulphates.
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|Item Type:||Journal Article|
|Additional Information:||This is one of a series of papers on secondary sulphate minerals formed during evaporation. Such minerals have been found on Mars.|
|Keywords:||evaporite, jarosite, halotrichite, sulphate, Raman spectroscopy|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2007 Elsevier|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||08 Dec 2006|
|Last Modified:||29 Feb 2012 23:34|
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