The creation of neotypes for hydrotalcite

Stuart J. Mills, Andrew G. Christy, Ralf T. Schmitt

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    13 Citations (Scopus)


    Two samples of hydrotalcite, probably worked on by Carl Christian Hochstetter, have been discovered in the Museum fur Naturkunde Berlin and given neotype status by the IMA CNMNC (proposal 15-J). The two samples from Snarum, Norway, have been reanalysed and give Mg5.84Al2.07Fe0.09(OH)16(CO3)1.08 · 4H2O and Mg5.75Al2.21Fe0.04(OH)16(CO3)1.12· 4H2O. Both samples have a mix of the two polytypes 3R/2H in the ratio of 69.2/30.8 and 69.5/30.5%. A discussion of hydrotalcite and hydrotalcite-like phase occurrences in the literature is also presented.

    Original languageEnglish
    Pages (from-to)1023-1029
    Number of pages7
    JournalMineralogical Magazine
    Issue number6
    Publication statusPublished - Oct 2016


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