Infrared spectra of mineral species

A multi-spectroscopic study for the characterization and definition of production techniques of German ceramic sherds

“…For instance, in Fig. 2 the FT-IR spectra of the glazes of Bu36, Bu44, Br08 and Br09 are reported, and they show the characteristic peaks of quartz (1088-1032 cm − 1 due to Si-O and Si-O-Si asymmetric stretching; 785-775 cm − 1 and 465-457 cm − 1 related to Si-O symmetric stretching and Si-O bending respectively) and a weak peak at 914 cm −1 ascribable to kaolinite presents as clay mineral in the ceramic body [25,26].…”

“…FT-IR spectra related to the ceramic matrix of all the samples are reported and summarized in Table 2, where the tentative vibrational assignments made on the basis of FT-IR spectra of minerals reported in literature are given [25][26][27][28][29][30][31][32][33]. On the basis of the FT-IR results, the ceramics may be divided in three groups.…”

“…Spectra were recorded in the range 4000-400 cm −1 as a ratio of 64 single-beam scans at 4 cm −1 resolution. The FT-IR spectra of the samples were compared with data reported in the bibliography [25][26][27][28][29][30][31][32][33] for a reliable attribution of the bands.…”

Calcinaksite, KNaCa(Si4O10) H2O, a new mineral from the Eifel volcanic area, Germany

“…Indeed, among IR spectra of about 2000 mineral species given in the book (Chukanov 2014), only spectra of manaksite and fenaksite have some similarity with that of calcinaksite, but as one can see from Fig. 4, calcinaksite spectrum has a number of distinct specific features.…”

The association of oxygen-bearing minerals of chalcophile elements in the orogenetic zone related to the “mixed series” complex near Nežilovo, Republic of Macedonia

“…A typical IR spectrum of Zn-rich magnesioriebeckite ( Fig. 2) is similar to that of Zn-free magnesioriebeckite [18], but is characterized by relatively broad and poor-resolved bands which indicates a disordered distribution of cations over structural sites. The bands at 3651 and 3639 cm -1 correspond to OH groups in different coordinations (presumably, MgMgMg and MgMgZn respectively).…”