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Insight into the unique structure of layered double hydroxides (LDHs) has been obtained using a combination of X-ray diffraction and thermal analysis. Indium containing hydrotalcites of formula Mg4In2...
Calorimetric studies by Chai and Navrotsky (1996) on dolomite-ankerite energetics have beenextended by including two additional types of samples: a very disordered stoichiometric MgCa(CO3 2prepared fr...
Samples along the dolomite-ankerite join weresynthesized using a piston-cylinder ap-paratus and the double-capsule method. Some ofthe ankerite samples maybedisordered. Thermal analysis and X-ray diffr...
Defernite, Ca6(C03)L5s(Si207)o.21(OHMClo.5o(OH)o.os(H20)od, is a carbonate mineral [space group Pnam; at 100K:a= 17.744(2), b=22.601(4), c =3.633(1) A,Z=4]withzeolite-like structural channels. The str...
Historically, the decarbonation of Mg-Al-CO3 hydrotalcite-like compounds (HTlc) has been thought to occur between 400° and 500°C. The present work demonstrates that when HTlcs having the maximum Al co...

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