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Correianevesite

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Prof. Correia Neves
Formula:
Fe2+Mn2+2(PO4)2 · 3H2O
Colour:
Grayish-brown to reddish-brown
Lustre:
Vitreous
Hardness:
Specific Gravity:
3.25
Crystal System:
Orthorhombic
Name:
Named in honour of Professor José Marques Correia Neves (1929-2011), mineralogist from Portugal, for his detailed studies of Brazilian pegmatites.
Practically a cation-ordered, intermediate member of the Phosphoferrite-Reddingite Series.
Reddingite group (Chukanov et al. 2013)


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Classification of CorreianevesiteHide

Approved
Approval Year:
2013

Physical Properties of CorreianevesiteHide

Vitreous
Transparency:
Transparent
Colour:
Grayish-brown to reddish-brown
Streak:
White
Hardness:
3½ on Mohs scale
Cleavage:
Poor/Indistinct
on (010).
Fracture:
Irregular/Uneven
Comment:
Fracture is laminated, uneven across cleavage.
Density:
3.25(2) g/cm3 (Measured)    3.275 g/cm3 (Calculated)

Optical Data of CorreianevesiteHide

Type:
Biaxial (+)
RI values:
nα = 1.661(5) nβ = 1.673(5) nγ = 1.703(5)
2V:
Measured: 70° (10), Calculated: 65.6°
Max Birefringence:
δ = 0.042
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of CorreianevesiteHide

Formula:
Fe2+Mn2+2(PO4)2 · 3H2O

Crystallography of CorreianevesiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 9.4887(2) Å, b = 10.1149(2) Å, c = 8.7062(2) Å
Ratio:
a:b:c = 0.938 : 1 : 0.861
Unit Cell V:
835.6 ų
Z:
4
Morphology:
Bipyramidal crystals
Comment:
Pbna

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.08(43)
4.314(28)
3.220(100)
3.125(20)
2.756(35)
2.686(25)
2.436(22)
2.233(23)

Type Occurrence of CorreianevesiteHide

General Appearance of Type Material:
As grayish-brown to reddish-brown transparent bipyramidal crystals up to 4 mm in size.
Place of Conservation of Type Material:
Type material is deposited in the collections of the collections of the Museu de Ciência Tecnica, Escola de Minas, Universidade Federal de Ouro Preto, Praça Tiradentes, Ouro Preto, Brazil, registration number SAA-081B
Geological Setting of Type Material:
A phosphate-rich granite pegmatite.
Associated Minerals at Type Locality:

Synonyms of CorreianevesiteHide

Other Language Names for CorreianevesiteHide

Relationship of Correianevesite to other SpeciesHide

Other Members of this group:
Garyansellite(Mg,Fe)3(PO4)2(OH,O) · 1.5H2OOrth. mmm (2/m 2/m 2/m)
Kryzhanovskite(Fe3+,Mn2+)3(PO4)2(OH,H2O)3Orth.
LandesiteMn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2OOrth.
Phosphoferrite(Fe2+,Mn2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
Reddingite(Mn2+,Fe2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna

Common AssociatesHide

Associated Minerals Based on Photo Data:
Hureaulite47 photos of Correianevesite associated with Hureaulite on mindat.org.
Rockbridgeite28 photos of Correianevesite associated with Rockbridgeite on mindat.org.
Strengite12 photos of Correianevesite associated with Strengite on mindat.org.
Triphylite8 photos of Correianevesite associated with Triphylite on mindat.org.
Vivianite4 photos of Correianevesite associated with Vivianite on mindat.org.
Beraunite1 photo of Correianevesite associated with Beraunite on mindat.org.
Phosphosiderite1 photo of Correianevesite associated with Phosphosiderite on mindat.org.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for CorreianevesiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chukanov, N.V., Scholz, R.,Zubkova, N.V., Pekov, I.V., Belakovskiy, D.I., Van.V., Lagoeiro, L., Grac¸a, L.M., Krambrock, K., de Oliveira, L.C.A., Menezes Filho, L.A.D. and Pushcharovsky, D.Y. (2013) Correianevesite, IMA 2013-007. CNMNC Newsletter No. 16, August 2013, page 2702; Mineralogical Magazine, 77, 2695-2709.
Chukanov, N.V., Scholz, R., Zubkova, N.V., Pekov, I.V., Belakovskiy, D.I., Van, K.V., Lagoeiro, L., Graça, L.M., Krambrock, K., de Oliveira, L.C.A., Menezes Filho, L.A.D., Sa Carneiro Chaves, M.L., Pushcharovsky, D.Y. (2014): Correianevesite, Fe2+Mn2+2(PO4)2·3H2O, a new reddingite-group mineral from the Cigana mine, Conselheiro Pena, Minas Gerais, Brazil. American Mineralogist, 99, 811-816

Internet Links for CorreianevesiteHide

Localities for CorreianevesiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Brazil (TL)
 
  • Minas Gerais
    • Conselheiro Pena
http://www.mindat.org/mesg-25-290977.html; Chukanov, N.V., Scholz, R., Zubkova, N.V., Pekov, I.V., Belakovskiy, D.I., Van, K.V., Lagoeiro, L., Graça, L.M., Krambrock, K., de Oliveira, L.C.A., Menezes Filho, L.A.D., Sa Carneiro Chaves, M.L., Pushcharovsky, D.Y. (2014): Correianevesite, Fe2+Mn2+2(PO4)2·3H2O, a new reddingite-group mineral from the Cigana mine, Conselheiro Pena, Minas Gerais, Brazil. American Mineralogist, 99, 811-816
USA
 
  • Maine
    • Androscoggin Co.
      • Poland
Moore, P. B., Araki, T., Kampf, A. R. (1980): Nomenclature of the phosphoferrite structure type: refinements of landesite and kryzhanovskite. Mineralogical Magazine, 43, 789-795. King, V. and Foord, E., 1994, 2000, Mineralogy of Maine.
Mineral and/or Locality  
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