Minerals from Macedonia. XII. The dependance of quartz and opal color on trace element composition – AAS, FT IR and micro-Raman spectroscopy study

P. Makreski, G. Jovanovski, B. Kaitner, T. Stafilov, B. Boev, Minerals from Macedonia. XII. The dependance of quartz and opal color on trace element composition – AAS, FT IR and micro-Raman spectroscopy study, Bulletin of Chemists and Technologists of Macedonia, 23, 171–184 (2004).