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Magnesionigerite-2N1S

Additional Functions

Collectors Summary

Color gelblich-braun, hellgelb, farblos
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 8
Solubility - heiße HCl, heiße HNO3
Crystal System trigonal, P3m1

Chemism

Chemical formula

(Mg,Al,Zn)4(Sn,Fe)2Al10O22(OH)2

Chemical composition

Aluminium, Eisen, Magnesium, Zink, Zinn, Sauerstoff, Wasserstoff

Unit weight: 978.67999584 u; Number of atoms in the formula: 42

Info

Empirical formula:

(Mg0.6Al0.3Zn0.1)4(Sn0.75Fe0.25)2Al10O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.21

2

4.76

1.0079470

2.0158940
Oxygen

O

39.24

24

57.14

15.9994300

383.9863200
Magnesium

Mg

5.96

2.4

5.71

24.3050600

58.3321440
Aluminium

Al

30.88

11.2

26.67

26.9815382

302.1932278
Iron

Fe

2.85

0.5

1.19

55.8452000

27.9226000
Zinc

Zn

2.67

0.4

0.95

65.4094000

26.1637600
Tin

Sn

18.19

1.5

3.57

118.7107000

178.0660500

Analysis wt%

SnO2 : 18.73, Al2O3 : 56.00, Fe2O3 : 8.38, MgO : 8.03, MnO : 0.40, ZnO : 4.73, SiO2 : 1.48, H2O : 1.88 (Ref: American Mineralogist S89)

Strunz 9th edition incl. updates

4.FC.20

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
20:Nigerit-Gruppe

Classification by Hölzel

4.CE.130

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

IMA status

Unter Prüfung der CNMNC umbenannt. Ürsprünglich benannt als "Pengzhizhongite-6T" von Chen u.a. (1989). Umbenannt von Armbruster (2002)

IMA Classification

IMA Classification

 Högbomite supergroup  ⇒ Nigerite group

Optical Properties

Color

gelblich-braun, hellgelb, farblos

Streak color

weiß

Lustre

Glasglanz

max. Birefringence

0.012
Birefringence chart\! Magnesionigerite-2N1S title=Birefringence chart Magnesionigerite-2N1S

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

1.802

RI value γ / ε

1.814

Ri mean

1.806

2V angle

Uniaxial (+)

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

164

Space Group

P3m1

Cell parameters a (Å)

5.692

Cell parameters b (Å)

-

Cell parameters c (Å)

13.78

Cell parameters a/b or c/a

2.421

Cell parameters c/b

-

Z

1

Volume (ų)

386.643

X-Ray Powder Diffraction

2.846(90),
2.624(20),
2.423(100),
1.842(20),
1.639(30),
1.545(40),
1.414(50),
1.050(30)
XRD chart Magnesionigerite-2N1S

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

8

VHN (Hardness Vickers)

2500 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.22 (gemessen) 4.16 (berechnet)

4.203 ( ρ calc. Mineralienatlas )

Instability

- heiße HCl, heiße HNO3

(Co-)Type locality

(Co-)Type locality

China/Hunan, Provinz/Yiyang, Präfektur/Anhua, Kreis/Baiwu Bergbau-Distrikt

Preface

Author (Name, Year)

Armbruster, 2002

References

Acta Mineralogica Sinica (in Chinese) 9 (1989), 20.

American Mineralogist 76 (1991), 1730 (Zusammenfassung).

European Journal of Mineralogy 14 (2002), 389.

IMA group assignments

Other languages

German

Magnesionigerit-2N1S

English

Magnesionigerite-2N1S

Russian

Магнезионигреит-2N1S

Alternative Name

Pengzhizhongite-6H

Pengzhizhongite-6T

Penzhizhongite

Penzhizhongite-6H

Penzhizhongite-6T

CNMNC symbol

Symbol

Mgng-2N1S

IDs

GUSID (Global unique identifier short form) 8qzTjUYGjEisOYp4B1Sx-w
GUID (Global unique identifier) 8DD3ACF2-0646-488C-AC39-8A780754B1FB
Database ID 2312