The image shows elongate plagioclase and more-equant quartz crystals grown from a starting gel with a 16 molar solution of CaCl2 and NaCl at 700ºC , 0.5 Gpa for 15 days. The image represents an area approximately 50 µm wide. Sample courtesy of Prof. Kirill Shmulovich (Academy of Science, Moscow), while working at the Department of Geology and Geophysics, University of Edinburgh. This article was published on 2024-07-01