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Aspidolite-1A

Additional Functions

Collectors Summary

Color hellbraun
Crystal System triklin,

Chemism

Chemical formula

NaMg3(AlSi3)O10(OH)2

Chemical composition

Aluminium, Magnesium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 401.1521324 u; Number of atoms in the formula: 22

Info

Empirical formula:

NaMg3(AlSi3)O10(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.50

2

9.09

1.0079470

2.0158940
Oxygen

O

47.86

12

54.55

15.9994300

191.9931600
Sodium

Na

5.73

1

4.55

22.9897702

22.9897702
Magnesium

Mg

18.18

3

13.64

24.3050600

72.9151800
Aluminium

Al

6.73

1

4.55

26.9815382

26.9815382
Silicon

Si

21.00

3

13.64

28.0855300

84.2565900

Analysis wt%

SiO2 : 36.90, TiO2 : 0.93, Al2O3 : 23.50, FeO : 4.07, MgO : 21.80, Na2O : 6.64, K2O : 1.33, H2O : 4.25 (Ref: Mineralogical Magazine 2005)

Classification by Hölzel

9.ED.111

9: SILICATES
E: Phyllosilicates
D: Biotite-Group

Mineral status

Polytype

Variety / polytype of

Aspidolite

Optical Properties

Color

hellbraun

Crystallography

Crystal System

triklin

Cell parameters a (Å)

5.289

Cell parameters b (Å)

9.16

Cell parameters c (Å)

9.982

Cell parameters a/b or c/a

0.577

Cell parameters c/b

1.09

Cell parameters α

94.45

Cell parameters β

97.73

Cell parameters γ

90.0

Z

2

Volume (ų)

477.735

X-Ray Powder Diffraction

9.73(80), 4.57(40), 3.26(40), 2.62(100), 2.55(30), 2.43(25), 2.19(25), 2.17(25)
XRD chart Aspidolite-1A

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

Physical Properties

Density (g/cm³)

2.789 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Japan/Honshū (Honschu), Insel/Chūbu (Chubu), Region/Gifu, Präfektur/Kasuga/Kawai pit

Preface

Author (Name, Year)

Banno Y., Miyawaki R., Kogure T., Matsubara S., Kamiya T., Yamada S. (2005)

References

Banno, Y., R. Miyawaki, T. Kogure, S. Matsubara, T. Kamiya & S. Yamada, Mineralogical Magazine 69 (2005), 1047.

Other languages

English

Aspidolite-1A

German

Aspidolith-1A

IDs

GUSID (Global unique identifier short form) mA5nY67DX0SjLGnUXmK5fQ
GUID (Global unique identifier) 63670E98-C3AE-445F-A32C-69D45E62B97D
Database ID 7552