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Chopinite

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Formula:
(Mg,Fe
2+
 
)
 
3
(PO
 
4
)
 
2
System:Monoclinic
Name:For Christian Chopin, French mineralogist and petrologist.
Dimorph of:Farringtonite


Mg-dominant analogue of Sarcopside

Classification of Chopinite

IMA status:Approved 2006
Strunz 8th edition ID:7/A.04-05
Nickel-Strunz 10th (pending) edition ID:8.AB.15

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

Type Locality:Brattnevet Peninsula, Larsemann Hills (Larseman Hills), Prydz Bay, Ingrid Christensen Coast, Princess Elizabeth Land, Eastern Antarctica, Antarctica

Crystallography of Chopinite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
X-Ray Powder Diffraction:
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,Fe
2+
 
)
 
3
(PO
 
4
)
 
2
All elements listed in formula:Fe, Mg, O, P

Relationship of Chopinite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.AB.05Farringtonite
Mg
 
3
(PO
 
4
)
 
2
8.AB.10Ferrisicklerite
(Fe
3+
 
,LiMn
2+
 
)PO
 
4
8.AB.10Heterosite
(Fe
3+
 
,Mn
3+
 
)PO
 
4
8.AB.10Lithiophilite
LiMn
2+
 
PO
 
4
8.AB.10Natrophilite
NaMn
2+
 
PO
 
4
8.AB.10Purpurite
(Mn
3+
 
,Fe
3+
 
)PO
 
4
8.AB.10Sicklerite
(LiMn
2+
 
,Fe
3+
 
)PO
 
4
8.AB.10Simferite
Li(Mg,Fe
3+
 
,Mn
3+
 
)
 
2
(PO
 
4
)
 
2
8.AB.10Triphylite
LiFe
2+
 
PO
 
4
8.AB.15Sarcopside
(Fe
2+
 
,Mn
2+
 
,Mg)
 
3
(PO
 
4
)
 
2
8.AB.20Beusite
(Mn
2+
 
,Fe
2+
 
,Ca,Mg)
 
3
(PO
 
4
)
 
2
8.AB.20Graftonite
(Fe
2+
 
,Mn
2+
 
,Ca)
 
3
(PO
 
4
)
 
2
8.AB.25Xanthiosite
Ni
 
3
(AsO
 
4
)
 
2
8.AB.30Lammerite
Cu
 
3
(AsO
 
4
)
 
2
8.AB.30IMA2009-002
Cu
 
3
(AsO
 
4
)
 
2
8.AB.35Mcbirneyite
Cu
 
3
(VO
 
4
)
 
2
8.AB.35Stranskiite
Zn
 
2
Cu(AsO
 
4
)
 
2
8.AB.40Lyonsite
Cu
 
3
Fe
 
4
(VO
 
4
)
 
6
Related Minerals - Dana Grouping):

- +
38.3.1.2Farringtonite
Mg
 
3
(PO
 
4
)
 
2

Other Names for Chopinite

Synonyms:
IMA2006-004
Other Languages:
Russian:Шопенит

Other Information

Health Warning: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

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    • Localities for Chopinite

    Hide Locality List
    (TL) indicates type locality. ? 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
     
    • 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
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