In the above article, published in the June 2009 issue of Mineralogical Magazine, a transposition of figures in Table 3 has been noted. In the second column, the dmeas. value for the 002 reflection should be 4.789 Å and not 7.489 Å.

A mis-spelling of the mineral malhmoodite should also be noted. Originally named mahlmoodite, “...for the late Bertha K. Mahlmood...”, by Milton et al. (1993), the spelling mahlmoodite was corrected to malhmoodite by the IMA in 2002 (case No 02-D 2002).

Milton, C., McGee, J.J., Evans, H.T. Jr (1993) Mahlmoodite, FeZr(PO4)2·4H2...

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