Mineraloške karakteristike i poreklo boje opala iz lokaliteta Bare, Šumadija

Mineralogy and color origin of opals from the locality Bare, Šumadija

  • Vesna Poharc-Logar University of Belgrade, Faculty of Mining and Geology, Đušina 7, 11000 Belgrade. Serbia.
  • Mihovil Logar University of Belgrade, Faculty of Mining and Geology, Đušina 7, 11000 Belgrade, Serbia.
Keywords: Opal-CT, color, diffuse reflection, iron, Bare, Šumadija

Abstract

Three representative samples of opals, intensively colored (green, yellow and red) from the locality Bare were investigated. The study of opals was carried out by means of the chemical, x—ray powder diffraction, thermal analysis as well as by infrared and optical absorption spectra. All data allowed identification of opals as opal-CT and proved that color is directly connected with the presence and concentration of iron.

 

Published
1998-12-19
How to Cite
Poharc-Logar, V. and Logar, M. (1998) “Mineraloške karakteristike i poreklo boje opala iz lokaliteta Bare, Šumadija”, Geološki anali Balkanskoga poluostrva, 62(1), pp. 233-250. Available at: https://gabp.rgf.bg.ac.rs/index.php/gabp/article/view/355 (Accessed: 24November2024).
Issue
Vol 62 No 1 (1998): Geološki anali Balkanskoga poluostrva
Section
Original Scientific Paper

Copyright (c) 1998 Geološki anali Balkanskoga poluostrva

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