Structural and Crystallochemical Features of New Members of the Hydrotalcite-Manasseite Group

Influence of alloying elements and microstructure on the formation of hydrotalcite film on Mg alloys

“…According to the XRD analysis, those peaks are not related to HT anymore, but related to the HT isomer ''manasseite'' showing identical chemical formula [Mg 6 Al 2 (OH) 16 CO 3 Á4H 2 O] but different unit-cell parameters. The trigonal groups are known as the HTs, whereas the hexagonal carbonates form is manasseite groups [23,24]. However, the reason for this phenomenon is too obscure to discuss in this paper, which requires further investigation.…”

Vibrational spectroscopic study of the natural layered double hydroxide manasseite now defined as hydrotalcite-2H – Mg6Al2(OH)16[CO3]⋅4H2O

“…In recent study Mills et al [7] have described the hydrotalcite supergroup as the grouping of several mineral groups: hydrotalcite, quintinite, fougèrite, woodwardite, glaucocerinite, wermlandite, cualstibite, hydrocalumite as well as unclassified minerals in a total of 43 approved minerals. In previous studies, the former hydrotalcite-2H group minerals were described as members of manasseite groups of minerals composed by hexagonal carbonates and the trigonal carbonates known as the hydrotalcite-3R or double layer hydroxides [8][9][10][11].…”