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Mianningite

Pictures (2 Images total)

Mianningite, Cleusonite, Titanite
Views (File:
1476691378
): 1451
Mianningite, Cleusonite, Titanite
Lustrous black rounded grains of Mianningite (Romanite) with minor zones of Cleusonite in border zone of granitic pegmatite crosscut amphibolite rocks. Brownish small grains of Al-bearing Titanite is visible. FOV is ~12x10 mm. Collected by L.I. Larichev in 1980. Pavel M. Kartashov collection and photo; Locality: Strelka U ore occurrence, Dambuki ore cluster, Amurskaya Oblast', Far-Eastern Region, Russia;
Copyright: Pavel M. Kartashov; Contribution: Stefan
Location: Russland/Ferner Osten, Föderationskreis/Amur, Oblast/Dambuki/Strelka U-Vorkommen
Mineral: Cleusonite, Mianningite, Titanite
Image: 1476691378
License: Usage for Mineralienatlas project only
Mianningite, Cleusonite, Titanite

Lustrous black rounded grains of Mianningite (Romanite) with minor zones of Cleusonite in border zone of granitic pegmatite crosscut amphibolite rocks. Brownish small grains of Al-bearing Titanite ...
Copyright: Pavel M. Kartashov
Contribution: Stefan 2016-10-17
Locality: Strelka U-Vorkommen / Dambuki / Amur, Oblast / Ferner Osten, Föderationskreis / Russland
Mianningite, Cleusonite, Titanite
Views (File:
1476691492
): 628
Mianningite, Cleusonite, Titanite
Lustrous black rounded grains of Mianningite (Romanite) with minor zones of Cleusonite in border zone of granitic pegmatite crosscut amphibolite rocks. Brown Titanite grains are visible in felspar part of the specimen. Specimen size is 4x3.5x2 cm. Collected by L.I. Larichev in 1980. Pavel M. Kartashov collection and photo; Locality: Strelka U ore occurrence, Dambuki ore cluster, Amurskaya Oblast', Far-Eastern Region, Russia;
Copyright: Pavel M. Kartashov; Contribution: Stefan
Location: Russland/Ferner Osten, Föderationskreis/Amur, Oblast/Dambuki/Strelka U-Vorkommen
Mineral: Cleusonite, Mianningite, Titanite
Image: 1476691492
License: Usage for Mineralienatlas project only
Mianningite, Cleusonite, Titanite

Lustrous black rounded grains of Mianningite (Romanite) with minor zones of Cleusonite in border zone of granitic pegmatite crosscut amphibolite rocks. Brown Titanite grains are visible in felspar ...
Copyright: Pavel M. Kartashov
Contribution: Stefan 2016-10-17
Locality: Strelka U-Vorkommen / Dambuki / Amur, Oblast / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Color schwarz
Streak color schwarz
Lustre Halbmetallglanz
Hardness (Mohs) ~6
Fracture muschelig
Crystal System trigonal, R3

Chemism

Chemical formula

(☐,Pb,Ce,Na)(U4+,Mn,U6+)Fe3+2(Ti,Fe3+)18O38

Empirical formula (analysis)

[☐0.322(Pb0.215Ba0.037Sr0.036Ca0.010)Σ0.298 (Ce0.128La0.077Nd0.012)Σ0.217 (Na0.127K0.036)Σ0.163]Σ1.000 (U4+0.447Mn0.293U6+0.112Y0.091Zr0.023Th0.011)Σ0.977 (Fe3+1.224Fe2+0.243Mg0.023P0.008Si0.006☐0.496)Σ2.000 (Ti12.464Fe3+5.292V5+0.118Nb0.083Al0.026Cr3+0.017)Σ18.000 O38

Additional chem. information

Crichtonit-Gruppe

Chemical composition

Blei, Cerium, Eisen, Mangan, Natrium, Titan, Sauerstoff, Uran, Vakanz

Unit weight: 1848.1058595021 u; Number of atoms in the formula: 59.977

Info

Empirical formula:

[Vc0.322(Pb0.215Ba0.037Sr0.036Ca0.010)(Ce0.128La0.077Nd0.012)(Na0.127K0.036)](U0.447Mn0.293U0.112Y0.091Zr0.023Th0.011)(Fe1.224Fe0.243Mg0.023P0.008Si0.006Vc0.496)(Ti12.464Fe5.292V0.118Nb0.083Al0.026Cr0.017)O38

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Vacancy

Vc

0.00

0.82

1.36

0.0000000

0.0000000
Oxygen

O

32.90

38

63.36

15.9994300

607.9783400
Sodium

Na

0.16

0.13

0.21

22.9897702

2.9197008
Magnesium

Mg

0.03

0.02

0.04

24.3050600

0.5590164
Aluminium

Al

0.04

0.03

0.04

26.9815382

0.7015200
Silicon

Si

0.01

0.01

0.01

28.0855300

0.1685132
Phosphorus

P

0.01

0.01

0.01

30.9737612

0.2477901
Potassium

K

0.08

0.04

0.06

39.0983100

1.4075392
Calcium

Ca

0.02

0.01

0.02

40.0784000

0.4007840
Titanium

Ti

32.28

12.46

20.78

47.8671000

596.6155344
Vanadium

V

0.33

0.12

0.20

50.9415100

6.0110982
Chromium

Cr

0.05

0.02

0.03

51.9961600

0.8839347
Manganese

Mn

0.87

0.29

0.49

54.9380499

16.0968486
Iron

Fe

20.42

6.76

11.27

55.8452000

377.4577068
Strontium

Sr

0.17

0.04

0.06

87.6210000

3.1543560
Yttrium

Y

0.44

0.09

0.15

88.9058520

8.0904325
Zirconium

Zr

0.11

0.02

0.04

91.2242000

2.0981566
Niobium

Nb

0.42

0.08

0.14

92.9063820

7.7112297
Barium

Ba

0.27

0.04

0.06

137.3277000

5.0811249
Lanthanum

La

0.58

0.08

0.13

138.9055200

10.6957250
Cerium

Ce

0.97

0.13

0.21

140.1161000

17.9348608
Neodymium

Nd

0.09

0.01

0.02

144.2430000

1.7309160
Lead

Pb

2.41

0.22

0.36

207.2100000

44.5501500
Thorium

Th

0.14

0.01

0.02

232.0381100

2.5524192
Uranium

U

7.20

0.56

0.93

238.0289130

133.0581624

Strunz 9th edition incl. updates

4.CC.40

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
C: Metall: Sauerstoff = 2: 3,3: 5, und vergleichbare
C: Mit großen und mittelgroßen Kationen
40:Crichtonit-Gruppe

Lapis Classification

IV/C.09-067

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)
9: Crichtonit-Gruppe

IMA status

von der CNMNC anerkanntes Mineral; CNMNC Newsletter No. 23, Februar 2015

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Crichtonite Group

Optical Properties

Color

schwarz

Streak color

schwarz

Change in color

unter reflektiertem Licht grauweiß, keine internen Reflektionen

Diaphaneity (Transparency)

opak

Lustre

Halbmetallglanz

Pleochroism

keiner beobachtet

Bireflectance

keine beobachtet

Anisotropism

isotropisch

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

148

Space Group

R3

Cell parameters a (Å)

10.3462(5)

Cell parameters b (Å)

-

Cell parameters c (Å)

20.837(2)

Cell parameters a/b or c/a

2.014

Cell parameters c/b

-

Z

3

Volume (ų)

1931.646

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

3.065(75), 2.883(55), 2.627(100), 2.476(55), 2.254(70), 2.144(100), 1.704(55), 1.545(60)
XRD chart Mianningite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

~6

VHN (Hardness Vickers)

83.8 kg/mm2 (0.2 kg)

Density (g/cm³)

4.62 (8) (gemessen) 4.77 (berechnet)

4.766 ( ρ calc. Mineralienatlas )

Fracture

muschelig

Tenacity

spröde

Radioactivity

vorhanden, da uranhaltig

(Co-)Type locality

(Co-)Type locality

China/Sichuan, Provinz/Liangshan, Präfektur/Mianning, Kreis/Maoniuping SE-Lagerstätte/Baozi Hill

Type material

Geological Museum of China, Beijing, China

Collection number of type material

M12189

Paragenesis of type material

Mikroklin, Albit, Quarz, Eisen-reicher Phlogopit, Augit, Muskovit, Calcit, Baryt, Fluorit, Epidot, Pyrit, Magnetit, Hämatit, Galenit, Hydroxylapatit, Titanit, Ilmenit, Rutil, Granat-Supergruppe-Mineralien, Zirkon, Allanit-(Ce), Monazit-(Ce), Bastnäsit-(Ce), Parisit-(Ce), Maoniupingit-(Ce), Thorit, Pyrochlor-Gruppe-Mineralien Chlorit

Preface

Name from

Der Name bezieht sich auf die Typlokalität

Author (Name, Year)

Xiangkun Ge, Guang Fan, Guowu Li, Ganfu Shen, Zhangru Chen and Yujie Ai

References

Ge, X., Fan, G., Li, G., Shen, G., Chen, Z. and Ai, Y. (2015) Mianningite, IMA 2014-072. CNMNC Newsletter No. 23, February 2015, page 54; Mineralogical Magazine, 79, 51-58.

Ge X., Fan G., Li G., Shen G., Chen Z., Ai Y. - Mianningite, (□,Pb,Ce,Na)(U4+,Mn,U6+)Fe3+2(Ti,Fe3+)18O38, a new member of the crichtonite group from Maoniuping REE deposit, Mianning county, northwest Sichuan, China. European Journal of Mineralogy, 29 (2017), (in press).

IMA group assignments

Other languages

German

Mianningit

English

Mianningite

Russian

Мяньнинит

Simplified Chinese

冕宁铀矿

CNMNC (IMA)-Number

IMA 2014-072

CNMNC symbol

Symbol

Min

Locations with GPS information

IDs

GUSID (Global unique identifier short form) g1DkbKVB4kKoBX-PrYbfrw
GUID (Global unique identifier) 6CE45083-41A5-42E2-A805-7F8FAD86DFAF
Database ID 7874