The determination of the Sb/As content in natural tetrahedrite-tennantite and bournonite-seligmannite solid solution series by Raman spectroscopy

A. I. Apopei ... [et al.]

Apopei Andrei Ionut (20%)

Damian Gheorghe (20%)
Buzgar Nicolae (20%)
Buzatu Andrei (20%)
Andráš Peter 1953- (15%) UMBFP04 - Katedra životného prostredia
Milovská Stanislava (5%)

Mineralogical Magazine. Vol. 81, no. 6 (2017), pp. 1439-1456. - Twickenham : The Mineralogical Society of Great Britain & Ireland, 2017

Ramanova spektrometria (spektroskopia) - Raman spectrometry (spectroscopy)

 

sulfosoli

 

mineralógia - mineralogy

 

angličtina

Veľká Británia

54

Natural samples containing tetrahedrite–tennantite, bournonite–seligmannite and geocronite–jordanite from the Coranda-Hondol ore deposit, Romania, were investigated by Raman spectroscopy to determine its capability to provide estimates of solid solutions in three common and widespread sulfosalt mineral series. Raman measurements were performed on extended solid solution series (Td1 to Td97, Bnn25 to Bnn93 and Gcn24 to Gcn67, apfu). The tetrahedrite–tennantite and bournonite–seligmannite solid solution series show strong correlations between spectroscopic parameters ( position, relative intensity and shape of the Raman bands) and the Sb/(Sb+As) content ratio, while Raman spectra of geocronite–jordanite shows no evolution of Raman bands. In order to simplify the method used to estimate the Sb/(Sb+As) content ratio in tetrahedrite–tennantite and bournonite–seligmannite series, several linear equations of the first-order polynomial fit were obtained. The results are in good agreement with electron microprobe data. Moreover, a computer program was developed as an analytical tool for a fast and accurate determination of Sb/(Sb+As) content ratio by at least one spectroscopic parameter. These results indicate that Raman spectroscopy can provide direct information on the composition and structure of the tetrahedrite–tennantite and bournonite– seligmannite series

41959

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