: Feldspars
WEBDec 16, 2022 · Like quartz, feldspars are framework silies. Unlike quartz, feldspars contain both SiO 4 and ... The colors are artifacts and are not the true colors of the domains. The field of view is 2 mm across, and the veins that cut across the field of view contain albite. ... (K,Na)AlSi 3 O 8 feldspars. This complies crystallization .