The combination of methods of microtomography with in situ-study of model crystals and ex situ-scanning of natural crystals makes it possible to carry out a partial reconstruction of natural crystallogenetics processes. With the help of AFM numerous flattened top hills were found on the inner walls of the fluid inclusions in crystal (Zhelannoe depozit, Subpolar Ural, Russia). A mathematical analysis and comparison of profile sections of these hillocks with hillocks of growth and dissolution from model crystals in-situ AFM experiments were carried out, proving that the internal surfaces of the cavity of inclusions of quartz are growth surfaces. With the use of these methods, the concentration of silica in the mother solution at the time of capture of inclusions was estimated for the first time.
Key words: Quartz, fluid inclusions, crystal growth mechanisms, dislocations, atomic force microscopy
minsoc.ru
Presentations
NEW !!! 
minsoc.ru ()