Protodolomite Synthesis at 100°C and Atmospheric Pressure

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Science  08 Feb 1974:
Vol. 183, Issue 4124, pp. 518-520
DOI: 10.1126/science.183.4124.518


Ordered protodolomite, CaMg(CO3)2, has been synthesized at 100°C by reaction of metastable precipitated carbonates with aqueous magnesium-bearing solutions. Initial reaction products have expanded crystallographic cells, attributed to the presence of structural water. Longer reaction time produces a protodolomite approaching ideal composition and exhibiting order reflections in x-ray powder