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Chopinite

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Formula:
(Mg,Fe2+)3(PO4)2
System:
Monoclinic
Name:
For Christian Chopin, French mineralogist and petrologist.
Dimorph of:
Mg-dominant analogue of sarcopside.

Classification of Chopinite

Approved 2006
8.AB.15

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Dana 7th ed.:
38.3.1.3
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Type Occurrence of Chopinite

Crystallography of Chopinite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
X-Ray Powder Diffraction Data:
d-spacingIntensity
5.92 (42)
4.31 (29)
3.84 (100)
3.48 (37)
2.97 (25)
2.77 (46)
2.51 (59)
2.44 (40)

Chemical Properties of Chopinite

Formula:
(Mg,Fe2+)3(PO4)2
Essential elements:
All elements listed in formula:

Relationship of Chopinite to other Species

Other Members of Group:
Sarcopside(Fe2+,Mn2+,Mg)3(PO4)2
Zavalíaite(Mn2+,Fe2+,Mg)3(PO4)2
8.AB.05FarringtoniteMg3(PO4)2
8.AB.10FerrisickleriteLi1-x(Fex3+Fe2+1-x)PO4
8.AB.10Heterosite(Fe3+,Mn3+)PO4
8.AB.10LithiophiliteLiMn2+PO4
8.AB.10NatrophiliteNaMn2+PO4
8.AB.10Purpurite(Mn3+,Fe3+)PO4
8.AB.10SickleriteLi1-x(Mnx3+Mn2+1-x)PO4
8.AB.10SimferiteLi(Mg,Fe3+,Mn3+)2(PO4)2
8.AB.10TriphyliteLiFe2+PO4
8.AB.10KarenwebberiteNa(Fe2+,Mn2+)PO4
8.AB.15Sarcopside(Fe2+,Mn2+,Mg)3(PO4)2
8.AB.20Beusite(Mn2+,Fe2+,Ca,Mg)3(PO4)2
8.AB.20Graftonite(Fe2+,Mn2+,Ca)3(PO4)2
8.AB.25XanthiositeNi3(AsO4)2
8.AB.30LammeriteCu3(AsO4)2
8.AB.30Lammerite-βCu3(AsO4)2
8.AB.35McbirneyiteCu3(VO4)2
8.AB.35StranskiiteZn2Cu(AsO4)2
8.AB.35PseudolyonsiteCu3(VO4)2
8.AB.40LyonsiteCu3Fe4(VO4)6

Other Names for Chopinite

Name in Other Languages:
Simplified Chinese:磷铁镁石

Other Information

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 Chopinite

Reference List:
Grew, E.S., Armbruster, Th., Medenbach, O., Yates, M.G., Carson, C.J. (2007): Chopinite, (Mg,Fe)3(PO4)2, a new mineral isostructural with sarcopside, from a fluorapatite segregation in granulite-facies paragneiss, Larsemann Hills, Prydz Bay, East Antarctica. European Journal of Mineralogy, 19,229-245. {Abstracted in American Mineralogist: 93,255(2008)]

Internet Links for Chopinite

Localities for Chopinite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Antarctica (TL)
 
  • Eastern Antarctica
    • Princess Elizabeth Land
      • Ingrid Christensen Coast
        • Prydz Bay
          • Larsemann Hills (Larseman Hills)
European Journal of Mineralogy, 19, 229-245(2007)[abstr: Am. Min. 93,255]
    • Transantarctic Mts
      • Wisconsin Range
        • Graves Nunataks Meteorites
Grew, E.S., Yates, M.G., Beane, R.J., Floss, C. and Gerbi, C. (2010) Chopinite-sarcopside solid solution, [(Mg,Fe)3vac](PO4)2, in GRA95209, a transitional acapulcoite: Implications for phosphate genesis in meteorites. American Mineralogist, 95, 260-272
Mineral and/or Locality  
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