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Minerals from Macedonia XVIII. Vibrational spectra of some sorosilicates


Makreski, Petre; Jovanovski, Gligor; Kaitner, Branko; Gajović, Andreja; Biljan, Tomislav
Minerals from Macedonia XVIII. Vibrational spectra of some sorosilicates // Vibrational Spectroscopy, 44 (2007), 1; 162-170 doi:10.1016/j.vibspec.2006.11.003 (međunarodna recenzija, članak, znanstveni)


Naslov
Minerals from Macedonia XVIII. Vibrational spectra of some sorosilicates

Autori
Makreski, Petre ; Jovanovski, Gligor ; Kaitner, Branko ; Gajović, Andreja ; Biljan, Tomislav

Izvornik
Vibrational Spectroscopy (0924-2031) 44 (2007), 1; 162-170

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Sorosilicate minerals; epidote; hemimorphite; ilvaite; vibrational spectroscopy

Sažetak
The vibrational spectroscopy is used in order to identify and characterize three sorosilicate minerals originating from the localities in the Republic of Macedonia: epidote, Ca_2Al_2(Fe^3+, Al)(SiO_4)(Si_2O_7)O(OH), hemimorphite, Zn_4(Si_2O_7)(OH)_2.H_2O and ilvaite, CaFe_2^2+Fe^3+-(Si_2O_7)O(OH). The chemical composition of these minerals is not necessarily fixed, especially for epidote-clinozoisite mineral series: Ca_2Al_2(Fe^3+, Al)(SiO_4)(Si_2O_7)O(OH)-Ca_2Al_2Al(SiO_4)(Si_2O_7)O(OH), where the content of Fe^3+ and Al could substantially vary. In this context, it was shown that the intensity and especially the frequency of the IR band in the nu(OH) region could serve as a tool for reliable determination of the Fe^3+ and/or Al^3+ in epidote. The similarity between the sorosilicate infrared spectra in the 1300-370 cm^-1 region is based on their common structural characteristics. The bands in this region are tentatively assigned being mostly prescribed to the vibrations of the Si_2O_7 units (and SiO_4 tetrahedra in epidote). On the other hand, the similarities between their Raman spectra are less expressed, especially in the case of ilvaite spectrum. The authenticity of the studied minerals is checked by the powder X-ray diffraction. The results of the study are compared with the corresponding literature data for the analogous mineral species originating all over the world.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija



POVEZANOST RADA


Projekt / tema
098-0982904-2898 - Fizika i primjena nanostruktura i volumne tvari (Mile Ivanda, )
119-1193079-3069 - Novi organski i koordinacijski spojevi - sinteza i suodnos struktura-svojstvo (Branko Kaitner, )

Ustanove
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka:


  • CA Search (Chemical Abstracts)


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