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Mendeleevite-(Ce) (Mendeleevit-(Ce))

Collectors Summary

Crystal System kubisch, Pm3

Chemism

Chemical formula

Cs6(REE22Ca6)(Si70O175)(OH,F)14(H2O)21

Chemical composition

Cäsium, Calcium, Silicium, Fluor, Sauerstoff, Wasserstoff, REE

Unit weight: 9595.184135875 u; Number of atoms in the formula: 366.5

Info

Empirical formula:

Cs6(REE22Ca6)(Si70O175)((OH)0.75F0.25)14(H2O)21

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.55

52.5

14.32

1.0079470

52.9172175

Oxygen

O

34.43

206.5

56.34

15.9994300

3,303.8822950

Fluorine

F

0.69

3.5

0.95

18.9984033

66.4944114

Silicon

Si

20.49

70

19.10

28.0855300

1,965.9871000

Calcium

Ca

2.51

6

1.64

40.0784000

240.4704000

Caesium

Cs

8.31

6

1.64

132.9054520

797.4327120

Rare Earth

REE

33.02

22

6.00

144.0000000

3,168.0000000

Analysis wt%

SiO2 : 43.52, Ce2O3 : 19.24, La2O3 : 9.87, Nd2O3 : 5.62, Pr2O3 : 2.63, Sm2O3 : 0.58, SrO : 1.07, CaO : 2.71, Cs2O : 8.64, K2O : 1.08, F : 1.34, H2O : 4.25, Ln2O3 : 38.32 (Ref: Mineralogical Magazine 2011)

Strunz 9th edition incl. updates

9

9: Silikate (Germanate)
9:
9:

Lapis Classification

VIII/J.20-050

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
20: Gerüstsilikate mit Zeolithstruktur

Classification by Hölzel

9.DN.330

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
N: ~[Si6O17]10--...~[Si6O15]6--...3-Band Xonotlite-Group

IMA status

anerkannt - März 2010, IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) NEWSLETTER 2, Mineralogical Magazine, February 2010, Vol. 74(1), pp. 375-377

Mineral status

anerkanntes Mineral

Crystallography

Crystal System

kubisch

Class (H-M)

m3

Space Group number

200

Space Group

Pm3

Cell parameters a (Å)

21.9148

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

10524.768

Crystal structure

Neuer Strukturtyp

X-Ray Powder Diffraction

15.53(3), 12.62(3), 10.95(10), 7.76(3), 4.08(3),
3.46(4), 3.097(5), 3.068(4)

XRD chart Mendeleevite-(Ce)

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.066 ber.

3.028 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Tadschikistan/Republik-unterstellte Gebiete (Nohijahoi tobei Dschumhurij)/Dara-i-Pioz (Darai-Pioz)

Type material

Fersman Mineralogisches Museum, Moskau, Russland

Collection number of type material

Registrationsnummer 3921/1.

Preface

Name from

Der Name ehrt den russischen Physiker Dimitrii I. Mendeleev (8.2.1834-2.2.1907), der 1869 als einer der ersten ein Periodensystem der Elemente aufgestellt hat. Aufgrund seiner weitgespannten Interessen hatte er großen Einfluss auf Entwicklungen der Naturwissenschaften und der Industrialisierung.

Author (Name, Year)

L. A. Pautov , A. A. Agakhanov , V. Yu. Karpenko , E. V. Sokolova, F. C. Hawthorne, 2013

References

L. A. Pautov , A. A. Agakhanov , V. Yu. Karpenko , E. V. Sokolova, F. C. Hawthorne: Mendeleevite-(Ce) (Cs, ?)6(?,Cs)6(?,K)6 (REE,Ca,?)30(Si70O175)(H2O,OH,F,?)35: A new mineral from the Darai-Pioz massif, Tajikistan. Doklady Earth Sciences Volume 452, Issue 2 (2013) S. 1023-1026.

IMA 2009-092, CNMNC Newsletter, April 2010, page 375;

Sokolova, E.; Hawthorne, F. C.; Pautov, L. A.; Agakhanov, A. A.; Karpenko, V. Yu: The crystal structure and crystal chemistry of mendeleevite-(Ce), (Cs,〈)6(〈,Cs)6(〈,K)6(REE,Ca,〈)30(Si70O175)(H2O,OH,F,〈)35, a potential microporous material. Mineralogical Magazine 75 (2011) S.2583-2596.

Dmitriy Belakovskiy, Fernando Cámara, G. Diego Gatta: New Mineral Names. American Mineralogist Vol. 99 (2014) S. 870-875.

Other languages

German

Mendeleevit-(Ce)

English

Mendeleevite-(Ce)

CNMNC (IMA)-Number

IMA 2009-092

CNMNC symbol

Symbol

Mdl-Ce

Locations with GPS information

IDs

GUSID (Global unique identifier short form) T6-ntpd4GUywVn3tQJ_Cxw
GUID (Global unique identifier) B6A7AF4F-7897-4C19-B056-7DED409FC2C7
Database ID 6889