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Reddingite from
Cigana claim, Barra do Cuieté, Conselheiro Pena, Minas Gerais, Brazil


Locality type:Claim
Classification
Species:Reddingite
Formula:(Mn2+,Fe2+)3(PO4)2 · 3H2O
Comments:Detailed investigation of an intermediate member of the reddingite–phosphoferrite series, using infrared and Raman spectroscopy, scanning electron microscopy 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)

However, more recent investigations (2013) have indicated that all the "reddingites" from here are correianevesites (see http://www.mindat.org/mesg-25-290977.html).
Confirmation
Validity:Erroneously Reported
Associated Minerals Based on Photo Data:
Hureauliteⓘ3 photos of Reddingite associated with Hureaulite at this locality.
Landesiteⓘ3 photos of Reddingite associated with Landesite at this locality.
Triphyliteⓘ3 photos of Reddingite associated with Triphylite at this locality.
Vivianiteⓘ3 photos of Reddingite associated with Vivianite at this locality.
Rockbridgeiteⓘ1 photo of Reddingite associated with Rockbridgeite at this locality.
Data
Mineral Data:Click here to view Reddingite data
Locality Data:Click here to view Cigana claim, Barra do Cuieté, Conselheiro Pena, Minas Gerais, Brazil
Data Identifiers
Mindat Occurrence Record ID:444024
Long-form Identifier:1:3:444024:6
GUID (UUID V4):7d47e89c-70fc-495f-bfc1-e022c023cc2c
Nearest other occurrences of Reddingite
38.7km (24.1 miles) ⓘLinópolis, Divino das Laranjeiras, Minas Gerais, Brazil
References
Fabre, Jordi (n.d.) Personal communication.
Frost, Ray L., Xi, Yunfei, Scholz, Ricardo, Belotti, Fernanda M., Lagoeiro, Leonardo E. (2012) Chemistry, Raman and infrared spectroscopic characterization of the phosphate mineral reddingite: (MnFe)3(PO4)2(H2O,OH)3, a mineral found in lithium-bearing pegmatite. Physics and Chemistry of Minerals, 39 (10) 803-810 doi:10.1007/s00269-012-0535-7
www.mindat.org (2013) http://www.mindat.org/mesg-25-290977.html
Reference Search (possible matching items)
Libowitzky, Eugen, Beran, Anton, Wieczorek, Arkadiusz K., Wirth, Richard (2012) On the presence of a hydrous component in a gemstone variety of intermediate olivine-type triphylite-lithiophilite, Li(Fe,Mn)PO4. Mineralogy and Petrology, 105 (1) 31-39 doi:10.1007/s00710-012-0195-9
Journal (article/letter/editorial)
hydrous phosphate minerals such as phosphoferrite-reddingite, (Fe,Mn)3(PO4)2 · 3H2O, (c) hydrous point defects...triphylitelithiophilite from an unknown locality in Brazil, with exceptional optical quality, and with an...triphylite occurrences in the states Minas Gerais, Paraíba, and Rio Grande do Norte (www.mindat.org). However...phosphate pegmatites, i.e. the Cigana claim (Jocão claim), Minas Gerais (no composition available; hints...phosphoferrite, (Fe,Mn) 3(PO 4) 2 · 3H2O, and reddingite, (Mn,Fe)3(PO4)2 · 3H2O, both representing the
 
Mineral and/or Locality  
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