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Improving Mindat.orgProbable Reddingite error at Jocão pegmatite, Brazil

2nd Jun 2015 23:03 UTCVik Vanrusselt Expert

Hello all,



The Jocão pegmatite locality ( http://www.mindat.org/loc-69153.html ) claims that "All the "reddingites" from here are correianevesites" (see also http://www.mindat.org/mesg-25-290977.html ).


However, Reddingite is still mentioned as occurring at the locality ( http://www.mindat.org/locentry-444024.html ), stating: "Detailed investigation of an intermediate member of the reddingite–phosphoferrite series, using infrared and Raman spectroscopy, scanning electron microcopy and electron microprobe analysis, has been carried out on a homogeneous sample from a lithium-bearing pegmatite named Cigana mine, near Conselheiro Pena, Minas Gerais, Brazil. The determined formula is (Mn1.60Fe1.21Ca0.01Mg0.01)∑2.83(PO4)2.12⋅(H2O2.85F0.01)∑2.86 indicating predominance in the reddingite member.

(Frost et al. 2012)".


Are these specimens Reddingite or Correianevesite?


Thanks,


Vik
 
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