Vaterite
Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
High Quality Content by WIKIPEDIA articles! Vaterite (CaCO3) is a mineral, a polymorph of calcium carbonate. It was named after the German mineralogist Heinrich Vater. It is also known as mu-calcium carbonate (?-CaCO3) and has a JCPDS number of 13-192. Vaterite, like aragonite, is a metastable phase of calcium carbonate at ambient conditions at the surface of the earth. As it is less stable than either calcite or aragonite, vaterite has a higher solubility than either of these phases. Therefore, once vaterite is exposed to water, it converts to calcite (at low temperature) or aragonite (at high temperature: ~60°C). However, vaterite does occur naturally in mineral springs, organic tissue, gallstones, and urinary calculi. In those...
ISBN: 978-6-1309-6981-3
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Книга по требованию
Дата выхода: июль 2011