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Mechanochemical synthesis and transformation of the polymorphic double carbonates fairchildite and buetschliite, (K2Ca(CO3)2): an in situ X-ray powder diffraction study

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This study presents the mechanochemical synthesis of the two K2Ca(CO3)2 polymorphs, fairchildite and buetschliite, from CaCO3 and K2CO3 using a shaker mill. Unlike previous methods requiring high temperatures and prolonged heating, fairchildite, a high-tempera... ...