Cryptoperthitic and replacive intergrowths with iridescence in monzonitic rocks from Cerro Colorado, northern Chile

Fluorite alignments cutting metasomatic textures in trachyte feldspars from Oki-Dogo Island, Sea of Japan

“…a Cannon camera 0f KISS X4 at Lake Biwa Museum, Kusatsu, Japan. Backscattered electron (BSE) images, secondary electron images, element distribution maps (EDMs), and feldspar chemical compositions were obtained using an EMPA (JXA-8800M; JEOL) at Shiga University, Otsu, Japan (Nakano et al, 2005(Nakano et al, , 2016. A focused beam was used for imaging and element mapping, and a 5-m beam was used to determine the chemical compositions of feldspars under the conditions of an accelerating voltage of 15 kV and a probe current of 8 nA.…”

“…Standards provided by JEOL were used for calibration. The compositional data were filtered according to the criteria between 98 and 102 wt% of the sum of the component oxides and 4.95-5.05 of the sum of cation numbers proportioned to O = 8 (Nakano et al, 2016). Monochromatic CL images at the wavelengths of 430 and 720 nm were obtained using an EMPA (JXA-8230; JEOL) combined with a photomultiplier (Hamamatsu) and a grating monochromator (Ritsu) at Shiga University under the conditions of a 15 kV accelerating voltage, a 50 nA probe current, a resolution of 400 × 400 pixels, and a counting time of 25-200 ms/pixel.…”