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Laptevite-(Ce)

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Formula:
Ca6(Fe2+,Mn2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11
System:
Trigonal
Member of:
Structurally related to the Vicanite Group (e.g. Okanoganite-(Y)).

Classification of Laptevite-(Ce)

Approved 2011
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Type Occurrence of Laptevite-(Ce)

Place of Conservation of Type Material:
Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4195/1

Crystallography of Laptevite-(Ce)

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
R3m
Space Group Setting:
R3m
Cell Parameters:
a = 10.804(2) Å, c = 27.726(6) Å
Ratio:
a:c = 1 : 2.566
Unit Cell Volume:
V 2802.6 ų
Z:
3
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.41(29)
3.13(26)
3.03(100)
2.982(85)
2.954(60)
2.689(40)
1.797(31)
1.770(21)

Chemical Properties of Laptevite-(Ce)

Formula:
Ca6(Fe2+,Mn2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11
Essential elements:
All elements listed in formula:

Relationship of Laptevite-(Ce) to other Species

Member of:
Other Members of Group:
Hundholmenite-(Y)(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48
Okanoganite-(Y)(Na,Ca)3(Y,Ce)12Si6B2O27F14
Proshchenkoite-(Y)Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14
Vicanite-(Ce)(Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7

Other Names for Laptevite-(Ce)

Name in Other Languages:

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 Laptevite-(Ce)

Reference List:
Agakhanov, A.A., Pautov, L.A., Uvarova, Y., Karpenko, V.Y., Sokolova, E.V. and Hawthorne, F.C. (2012): Laptevite-(Ce), IMA 2011-081. CNMNC Newsletter No. 12, February 2012, page 153; Mineralogical Magazine, 76, 151-155.

Uvarova, Y.A., Sokolova, E., Hawthorne, F.C., Agakhanov, A.A., Karpenko, V.Y., Pautov, L.A. (2013): The crystal structure of laptevite-(Ce), NaFe2+(REE7Ca5Y3)(SiO4)4(Si3B2PO18)(BO3)F11, a new mineral species from the Darai-Pioz alkaline massif, Northern Tajikistan. Zeitschrift für Kristallographie - Crystalline Materials, 228, 550-557.

Internet Links for Laptevite-(Ce)

Localities for Laptevite-(Ce)

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.
(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.
Kyrgyzstan
 
  • Osh Oblast
    • Zeravshan range
      • Matcha massif
Atali A.Agakhanov and Leonid A.Pautov analytical data
Tajikistan (TL)
 
  • Region of Republican Subordination
    • Tien Shan Mtn
      • Alai Range (Alayskiy)
Agakhanov, A.A., Pautov, L.A., Uvarova, Y., Karpenko, V.Y., Sokolova, E.V. and Hawthorne, F.C. (2012): Laptevite-(Ce), IMA 2011-081. CNMNC Newsletter No. 12, February 2012, page 153; Mineralogical Magazine, 76, 151-155; Uvarova, Y.A., Sokolova, E., Hawthorne, F.C., Agakhanov, A.A., Karpenko, V.Y., Pautov, L.A. (2013): The crystal structure of laptevite-(Ce), NaFe2+(REE7Ca5Y3)(SiO4)4(Si3B2PO18)(BO3)F11, a new mineral species from the Darai-Pioz alkaline massif, Northern Tajikistan. Zeitschrift für Kristallographie - Crystalline Materials, 228, 550-557.
Mineral and/or Locality  
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