[PDF] Top 20 A vibrational spectroscopic study

... the Raman spectrum of a synthetic cobalt boracite [25]. The sym- metry species of some vibrational modes were determined. These researchers [26] used Raman imaging to show the ferroelectric properties of boracite ... See full document

... the study of harmotome and its admixtures including ...a vibrational spectroscopic study of harmotome to determine the characteristic bands of this ... See full document

... Si–O tetrahedra (differing in interatomic distances) in the inesite structure [8]. Wan and Ghose stated that the crystal structure of inesite provides the first example of double silicate chains with a periodicity of ... See full document

... the study of mineral structure ...years, spectroscopic studies concerning phosphate minerals are increasing, especially due to their industrial and tech- nological ... See full document

... infrared data for this region were not obtained. One of the strong advantages of Raman spectroscopy is the ability to obtain spectral data below 400 cm 1 . The difficulty in the study of this spectral region is a ... See full document

... the study of Raman spectra of the natural uranyl selenite derriksite, complemented by its infrared ...systematic vibrational spectroscopic research of sec- ondary minerals formed in the oxidation ... See full document

... to study the vibrational spectroscopy of sido- renkite as there have been very few studies of this mineral as is evidenced in the ...the study of alkaline ... See full document

... One way of looking at hydrotalcites is to consider the molecules to be giant cations with a distribution of positive charges over the surfaces. These charges may be random or in some regular array. The positive charges ... See full document

... the study of a specific member of this group, the mineral ...The vibrational spectra (infrared and Raman) of fraipontite are investigated and related to the structure of the ... See full document

... a study of the tellurite mineral sonorite using electron microscopy with EDX com- bined with vibrational ...to study the mineral sonoraite an examples of group A(XO 3 ), with hydroxyl and water units ... See full document

... No Raman spectroscopic studies of meliphanite and related minerals have been forthcoming [9]. Some infrared studies of selected calcium silicates have been undertaken [10,11]. Few stud- ies have been made on ... See full document

... in the infrared spectrum of olivenite and it was suggested that this was a CuO stretching vibration [35]. However a band in this posi- tion seems too high for this type of vibration. We propose that the bands in these ... See full document

... The vibrational spectra of phosphate minerals have been pub- lished by Farmer’s treatise Chapter 17 [25]. Table 17.III in Ref. [25] reports the band positions of a wide range of phosphates and arsenates, among ... See full document

... There are a couple of minerals the chemistry of which may be compared with vantasselite. These include wardite and cyrilovite. There have been some studies of the vibrational spectroscopy of wardite [6,7]. Tarte ... See full document

... in Fig. 4b. This infrared spectrum is complex with many overlap- ping bands. Any attempt to assign these bands is fraught with dan- ger. What this work shows is how powerful Raman spectroscopy in the study of ... See full document

... A study of the rare mineral ardennite-(As) was made using a combination of SEM with EDX and infrared and Raman spectros- copy. Qualitative chemical analysis shows a homogeneous phase, composed by Si, Mn, Al and ... See full document

... the study of minerals ...the study of diagenetically related minerals where iso- morphic substitution may occur as with wardite, cyrilovite and whiteite, as often occurs with minerals containing phosphate ... See full document

... The Raman spectra of fluellite samples in the 100–4000 cm 1 spectral range are illustrated in Figs. These spectra show the position of the Raman bands and their relative intensities. It[r] ... See full document

... No Raman spectroscopic analyses of pectolite and related min- erals have been forthcoming. There are spectra in the RRUFF data base but no band assignments are given. Some infrared studies have been undertaken ... See full document

... used vibrational spectros- copy to determine the role of water in the apophyllite ...the study of miner- als ...the study of diagenetically related minerals as often occurs with minerals containing ... See full document