Microcline reveals how a common mineral surface triggers ice formation in clouds
4 Articles
4 Articles
Microcline reveals how a common mineral surface triggers ice formation in clouds
Pure water freezes only at around -38°C (-36°F). Tiny mineral dust particles act as so-called ice nucleators—crystallization seeds on which ice crystals form. A research team at Bielefeld University and the University of Vienna, in cooperation with researchers at the University of Helsinki, has now demonstrated for the first time at the molecular scale why the mineral microcline is particularly effective at forming ice in clouds. The study, publ…
Ice without a particular germ: The feldspar mineral microclin can create ice crystals already on its atomicly flat, stable surface. Nanometer images and simulations show an atomic difference, which makes microclin much more effective than the chemically identical mineral sanidine. However, the experiments took place under highly simplified laboratory conditions and do not recreate the atmosphere directly. Bielefeld (Germany). Whether water dropl…
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