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Maoniupingite-(Ce) (Maoniupingit-(Ce))

Collectors Summary

Color schwarz oder braunschwarz
Lustre Halbmetallglanz, Pechglanz
Crystal System monoklin, C2/m

Chemism

Chemical formula

(REE,Ca)4(Fe3+,Ti,Fe2+,☐)(Ti,Fe3+,Fe2+,Nb)4Si 4O22

Additional chem. information

Fe-dominantes Analog von Polyakovit-(Ce)

Chemical composition

Calcium, Eisen, Niob, Silicium, Titan, Sauerstoff, Vakanz, REE

Unit weight: 1200.3087064005 u; Number of atoms in the formula: 35

Info

Empirical formula:

(REE0.75Ca0.25)4(Fe0.55Ti0.3Fe0.1Vc0.05)(Ti0.55Fe0.3Fe0.1Nb0.05)4Si 4O22

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Vacancy

Vc

0.00

0.05

0.14

0.0000000

0.0000000

Oxygen

O

29.32

22

62.86

15.9994300

351.9874600

Silicon

Si

9.36

4

11.43

28.0855300

112.3421200

Calcium

Ca

3.34

1

2.86

40.0784000

40.0784000

Titanium

Ti

9.97

2.5

7.14

47.8671000

119.6677500

Iron

Fe

10.47

2.25

6.43

55.8452000

125.6517000

Niobium

Nb

1.55

0.2

0.57

92.9063820

18.5812764

Rare Earth

REE

35.99

3

8.57

144.0000000

432.0000000

Strunz 9th edition incl. updates

9.BE.70

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
E: Si2O7 Gruppen mit zusätzlichen Anionen; Kationen in oktahedraler [6] und größerer Koordination
70:Chevkinit-Gruppe

Lapis Classification

VIII/C.17-023

VIII: SILIKATE
C: Gruppensilikate
17: Gruppensilikate [Si2O7] 6-, mit tetraederfremden Anionen (O,OH,F); Chevkinit-Reihe

Classification by Hölzel

9.BK.155

9: SILICATES
B: Sorosilicates
K: Perrierite-Group

Dana 8th edition

56.02.08.08

56: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O
02: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O with cations in [4] and/or >[4] coordination
08: Perierite - Chevkinite group

IMA status

anerkannt 2003

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Chevkinite group  ⇒ Chevkinite subgroup

Optical Properties

Color

schwarz oder braunschwarz

Change in color

grau in reflektiertem Licht

Diaphaneity (Transparency)

opak

Lustre

Halbmetallglanz, Pechglanz

max. Birefringence

0.033

Birefringence chart\! Maoniupingite-(Ce) title=Birefringence chart Maoniupingite-(Ce)

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.937

RI value γ / ε

1.970

Ri mean

1.955

2V angle

Biaxial (-) nd

Pleochroism

schwach

Anisotropism

stark

Reflectivity: (Lambda nm) ↓, ↑, Ø

(470) 12.5, 14.6, 13.6
(546) 12.1, 14.4, 13.3
(589) 12.1, 14.3, 13.2
(650) 11.2, 13.7, 12.5

Reflection chart Maoniupingite-(Ce)

Reflectivity Ø

13.11

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

13.385

Cell parameters b (Å)

5.742

Cell parameters c (Å)

11.059

Cell parameters a/b or c/a

2.331

Cell parameters c/b

1.926

Cell parameters α

90°

Cell parameters β

100.60

Cell parameters γ

90°

Z

2

Volume (ų)

835.454

X-Ray Powder Diffraction

4.89(35), 3.490(40), 3.189(80), 3.004(40), 2.874(40), 2.760(40), 2.722(100)

XRD chart Maoniupingite-(Ce)

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

4.771 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Shen & Yang & Xu, 2005

References

Chenji yu Tetisi Dizhi 25 (2005), 210

European Journal of Mineralogy 14 (2002), 969

R. Macdonald, B. Bagiński, P. M. Kartashov, D. Zozulya and P. Dzierżanowski - Chevkinite-group minerals from Russia and Mongolia: new compositional data from metasomatites and ore deposits - Mineralogical Magazine, June 2012, Vol. 76(3), pp. 535–549 http://rruff.info/uploads/MM76_535.pdf

IMA group assignments



 
 
 
(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
monoklin
C2/m

 
 
 
 
 
 

 
 
 
Ce4Mg(Fe3+,W)3☐(Si2O7)2O6(OH)2
monoklin
C2/m

 
 
 
(Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe3+)2Ti2Si4O22
monoklin
P21/a

 
 
 
(REE,Ca)4(Fe3+,Ti,Fe2+,☐)(Ti,Fe3+,Fe2+,Nb)4Si 4O22
monoklin
C2/m

 
 
 
(Ce,La,Nd,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2[O4|Si2O7]2
 
 

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Actuality: 10. Feb 2025 - 18:21:25

Other languages

German

Maoniupingit-(Ce)

English

Maoniupingite-(Ce)

Alternative Name

Simplified Chinese

牦牛坪矿-(Ce)

Simplified Chinese

牦牛坪矿-(Ce)

CNMNC (IMA)-Number

IMA 2003-017

CNMNC symbol

Symbol

Mao-Ce

Locations with GPS information

IDs

GUSID (Global unique identifier short form) wu-_Gr-O3ESP4tkskLGdDQ
GUID (Global unique identifier) 1ABFEFC2-8EBF-44DC-8FE2-D92C90B19D0D
Database ID 4470