Atom Probe Tomography of Feldspars and Aluminosilicate Glasses

Feldspars are a group of alumniosilicate minerals that make up as much as 60% of the Earth's crust. The most common feldspars can be expressed in terms of three endmembers (Figure At high temperatures, solid solutions exist between the distinct endmembers; however, during cooling miscibility gaps result in phase separation (exsolution) of the solid solution into multiple stable phases.