Raman and infrared spectroscopy of kaersutite and certain common amphiboles
Journal Title: Analele stiintifice ale Universitatii "Alexandru Ioan Cuza" din Iasi - seria Geologie - Year 2011, Vol 57, Issue 2
Abstract
Raman and infrared spectral studies were performed on six natural minerals from the doublechain silicate group. We analyzed samples of grunerite, actinolite, tremolite, pargasite (+kaersutite) and riebeckite in order to determine the spectral differences between them and to identify the vibrations that occur. Also, for one sample thought to be pargasite we obtained the Raman spectrum of kaersutite, while another sample was determined as a Ti-rich pargasite, since the difference between these two minerals consists in the presence of more than 0.50 apfu VITi in kaersutite (titaniferous calcic amphibole). The Raman spectrum of kaersutite exhibits characteristic bands of the VITi-OH vibration around 580–590 cm-1 and 750 cm-1. These two bands are stronger than the symmetric stretching vibration of the Si-Ob-Si (ν1), which arises as the strongest band in all other amphibole minerals of the present study, around 650–670 cm-1. Both Raman and infrared spectra of all the analyzed samples reveal the presence of Fe2+, Mg2+ or other cations in the octahedral sites, displaying distinct bands in the ~300-450 cm-1 spectral region, as well as in the OH stretching region (3600–3700 cm-1).
Authors and Affiliations
Andrei Ionuț Apopei, Nicolae Buzgar, Andrei Buzatu
Keywords
Related Articles
- EP ID EP455867
- DOI -
- Views 76
- Downloads 0
Soil mineralogy in two apple-orchards, Fălticeni and Sârca (Moldavian Platform)
The present paper is focused on the mineralogical analysis of soils from two apple orchards (Fălticeni and Sârca) from the North-Eastern region of Romania, geologically located on the Moldavian Platform. 20 samples have...
Establishment of the sanitary protection zone for the 110H Faraoani well, Bacău County
The aim of the present study lies in the analysis of the hydrogeological aquifer that supplies the 110h Faraoani well (Bacau County), in order to determine its sanitary protection zone.
The distribution of the major elements in the stream sediments from the Jijia River basin
The aims of the present study are to assess the normal variation limits of nine major chemical elements from the stream sediments of the Jijia river basin, as well as to explain the presence of any anomalous values. Stat...
Burial depth estimation for possible hydrocarbon source rocks within the area of the Comănești Basin. Application on the S300 well, Șipoteni structure (Romania)
The objective of the present study was the estimation of burial depths for possible hydrocarbon source rocks of Oligocene age from the Vrancea Nappe. The study was carried out on the Șipoteni structure, located within th...
Mineralogical and Thermal Analyses of a Bangle Shard from Harrappa, an Indus Valley Settlement in Pakistan
The present research paper presents the results of a recent study during which mineralogical and thermal analyses were carried out on a terracotta bangle shard from Harrappa, an Indus valley settlement in Pakistan. Bento...