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Polezhaevaite-(Ce)

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Formula:
NaSrCeF
 
6
System:Hexagonal


Sr-Ce analogue of gagarinite-(Y).

Classification of Polezhaevaite-(Ce)

IMA status:Approved 2009
Nickel-Strunz 10th (pending) edition ID:3.AB.35

3 : HALIDES
A : Simple halides, without H2O
B : M:X = 1:2
Dana 8th edition ID:11.5.6.3

11 : HALIDE COMPLEXES
5 : AmBX6
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Type Occurrence of Polezhaevaite-(Ce)

Type Locality:Koashva Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Crystallography of Polezhaevaite-(Ce)

Crystal System:Hexagonal
Class (H-M):6/m - Dipyramidal
Space Group:P63/m
Cell Parameters:a = 6.207(7) Å, c = 3.801(9) Å
Ratio:a:c = 1 : 0.612
Unit Cell Volume:V 126.82 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
5.416 (40)
3.120 (100)
2.198 (70)
1.796 (90)
1.554 (30)
1.387 (30)
1.304 (30)
1.173 (70)

Chemical Properties of Polezhaevaite-(Ce)

Formula:
NaSrCeF
 
6
Essential elements:Ce, F, Na, Sr
All elements listed in formula:Ce, F, Na, Sr

Relationship of Polezhaevaite-(Ce) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.AB.05Tolbachite
CuCl
 
2
3.AB.10Coccinite
HgI
 
2
3.AB.15Sellaite
MgF
 
2
3.AB.20Chloromagnesite
MgCl
 
2
3.AB.20Lawrencite
(Fe
2+
 
,Ni)Cl
 
2
3.AB.20Scacchite
MnCl
 
2
3.AB.25Fluorite
CaF
 
2
3.AB.25Frankdicksonite
BaF
 
2
3.AB.25IMA2009-014
SrF
 
2
3.AB.30Tveitite-(Y)
(Y, Na)
 
6
Ca
 
6
Ca
 
6
F
 
42
3.AB.35Gagarinite-(Y)
NaCaYF
 
6
3.AB.35Gagarinite-(Ce)
Na(REE
 
x
Ca
 
1-x
)(REE
 
y
Ca
 
1-y
)F
 
6

Other Names for Polezhaevaite-(Ce)

Synonyms:
IMA2009-015
Other Languages:

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 Polezhaevaite-(Ce)

Reference List:

- +
Yakovenchuk, V.N., Selivanova, E.A., Ivanyuk, G.Yu., Pakhomovsky, Ya.A., Mikhailova, J.A., Nikolaev, A.P. (2010): Polezhaevaite-(Ce), NaSrCeF6, a new mineral from the Khibiny massif (Kola Peninsula, Russia). American Mineralogist, 95, (in press).

Internet Links for Polezhaevaite-(Ce)

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    • Localities for Polezhaevaite-(Ce)

    The 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.
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    (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.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		Yakovenchuk, V.N., Selivanova, E.A., Ivanyuk, G.Yu., Pakhomovsky, Ya.A., Mikhailova, J.A., Nikolaev, A.P. (2010): Polezhaevaite-(Ce), NaSrCeF6, a new mineral from the Khibiny massif (Kola Peninsula, Russia). American Mineralogist, 95, (in press).
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