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Ferrotaaffeite-2N’2S

Collectors Summary

Crystal System hexagonal, P63mc

Chemism

Chemical formula

Be(Fe,Mg,Zn)3Al8O16

Additional chem. information

Taaffeit-Gruppe

Chemical composition

Aluminium, Beryllium, Eisen, Magnesium, Zink, Sauerstoff

Unit weight: 622.8741019 u; Number of atoms in the formula: 28

Info

Empirical formula:

Be(Fe0.6Mg0.3Zn0.1)3Al8O16

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Beryllium

Be

1.45

1

3.57

9.0121823

9.0121823
Oxygen

O

41.10

16

57.14

15.9994300

255.9908800
Magnesium

Mg

3.51

0.9

3.21

24.3050600

21.8745540
Aluminium

Al

34.65

8

28.57

26.9815382

215.8523056
Iron

Fe

16.14

1.8

6.43

55.8452000

100.5213600
Zinc

Zn

3.15

0.3

1.07

65.4094000

19.6228200

Strunz 9th edition incl. updates

4.FC.25

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
F: Hydroxide (ohne V oder U)
C: Hydroxide mit OH, ohne H2O; eckenverknüpfte Oktaeder
25:

Classification by Hölzel

4.CE.181

4: OXIDES
C: R2O3 Sesquioxides
E: Other complex Oxides, mostly hextrig
1: Högbomite-Group

IMA status

anerkannt - CNMNC - New minerals and nomenclature modifications approved in Jun. 2011

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Högbomite supergroup  ⇒ Taaffeite group

Crystallography

Crystal System

hexagonal

Class (H-M)

6mm

Space Group number

186

Space Group

P63mc

Cell parameters a (Å)

5.706

Cell parameters b (Å)

-

Cell parameters c (Å)

18.352

Cell parameters a/b or c/a

3.216

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volume (ų)

517.461

X-Ray Powder Diffraction

2.86(80), 2.60(90), 2.43(100), 2.05(70), 1.595(70), 1.473(80), 1.425(90)
XRD chart Ferrotaaffeite-2N’2S

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

Physical Properties

Density (g/cm³)

3.997 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

China/Hunan, Provinz/Chenzhou, Präfektur/Linwu, Kreis/Xianghualing Sn-Erzfeld/Xianghualing Mine (Hsianghualing Mine)

Type material

Museum of the Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China

Collection number of type material

KDX017

Preface

Author (Name, Year)

Zhuming Yang, Kuishou Ding, Jeffrey de Fourestier, Qian Mao und He Li (2011)

References

Zhuming, Y., Kuishou, D., de Fourestier, J., Qian, M. and He, L. (2011) Ferrotaaffeite-2N’2S, IMA 2011-025. CNMNC Newsletter No. 10, October 2011, page 2554;

IMA group assignments

Other languages

German

Ferrotaaffeit-2N’2S

English

Ferrotaaffeite-2N’2S

CNMNC (IMA)-Number

IMA 2011-025

CNMNC symbol

Symbol

Ftf-2N'2S

Locations with GPS information

IDs

GUSID (Global unique identifier short form) QtKLNzLGSEqyUCWnnJtbrQ
GUID (Global unique identifier) 378BD242-C632-4A48-B250-25A79C9B5BAD
Database ID 7072