JOURNAL OF NON-CRYSTALLINE SOLIDS, cilt.356, ss.1408-1415, 2010 (SCI-Expanded)
Reddish-orange and yellowish-white colored Anatolian fire opals from Turkey were investigated to reveal the nano-grain sizes of its opaline matrix components, such as opal-CT and opal-C silica building phases. using atomic force microscopy (AFM) before and after HF acid etching of the samples.