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Magbasite

Pictures (2 Images total)

Magbasit
Views (File:
1615400874
): 230
Magbasit
garbenförmiges Aggregat von rötlichem Magbait, Bayan Obo, Innere Mongolei, VR China; BB ~ 3 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: China/Innere Mongolei (Neimenggu)/Baotou/Vereinigtes Darhan-Mumingan-Banner/Bayan Obo
Mineral: Magbasite
Image: 1615400874
License: Usage for Mineralienatlas project only
Magbasit

garbenförmiges Aggregat von rötlichem Magbait, Bayan Obo, Innere Mongolei, VR China; BB 3 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2021-03-10
Locality: Bayan Obo / Vereinigtes Darhan-Mumingan-Banner / Baotou / Innere Mongolei (Neimenggu) / China
Magbasit
Views (File:
1703283011
): 43
Magbasit
Magbasit (ohne Maßstab) von der Typlokalität Bayan Obo Deposit, Baotou League, Innere Mongolei, China. Ex Van den Broucke Sammlung (sh.: https://www.mindat.org/mesg-560223.html).
Copyright: Wikipedia-user: David Hospital; Contribution: oliverOliver
Location: China/Innere Mongolei (Neimenggu)/Baotou/Vereinigtes Darhan-Mumingan-Banner/Bayan Obo/Bayan Obo SE-Fe-Nb-Lagerstätte
Mineral: Magbasite
Image: 1703283011
License: Creative Commons - Attribution-ShareAlike 4.0 International  (CC BY-SA) V.4.0
Magbasit

Magbasit (ohne Maßstab) von der Typlokalität Bayan Obo Deposit, Baotou League, Innere Mongolei, China. Ex Van den Broucke Sammlung (sh.: https://www.mindat.org/mesg-560223.html).
Copyright: Wikipedia-user: David Hospital
Contribution: oliverOliver 2023-12-22
Locality: Bayan Obo SE-Fe-Nb-Lagerstätte / Bayan Obo / Vereinigtes Darhan-Mumingan-Banner / Baotou / Innere Mongolei (Neimenggu) / China

Collectors Summary

Color farblos, rosaviolett
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 5
Crystal System orthorhombisch, Cmma

Chemism

Chemical formula

KBaFe3+Mg7Si8O22(OH)2F6

Chemical composition

Barium, Eisen, Magnesium, Silicium, Fluor, Kalium, Sauerstoff, Wasserstoff

Unit weight: 1127.0835035 u; Number of atoms in the formula: 50

Info

Empirical formula:

KBaFeMg7Si8O22(OH)2F6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.18

2

4.00

1.0079470

2.0158940
Oxygen

O

34.07

24

48.00

15.9994300

383.9863200
Fluorine

F

10.11

6

12.00

18.9984033

113.9904195
Magnesium

Mg

15.10

7

14.00

24.3050600

170.1354200
Silicon

Si

19.94

8

16.00

28.0855300

224.6842400
Potassium

K

3.47

1

2.00

39.0983100

39.0983100
Iron

Fe

4.95

1

2.00

55.8452000

55.8452000
Barium

Ba

12.18

1

2.00

137.3277000

137.3277000

Analysis wt%

SiO2 : 39.70, Al2O3 : 4.00, Sc2O3 : 2.10, FeO : 8.90, MgO : 21.40, CaO : 1.70, BaO : 14.80, K2O : 4.90, F : 5.50 (Ref: Doklady Akademiia Nauk, SSSR 65)

Strunz 9th edition incl. updates

9.HA.25

9: Silikate (Germanate)
H: Unklassifizierte Silikate
A: Mit Alkali- und Alkali-Erden-Elementen
25:Magbasit-Gruppe

Lapis Classification

VIII/F.24-040

VIII: SILIKATE
F: Ketten- und Bandsilikate
24: Viererketten [Si4O12] 8-

Classification by Hölzel

9.DL.300

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
L: Chain <==> Band

Dana 8th edition

69.02.01c.01

69: Inosilicates Inosilicate Chains with Side Branches or Loops
02: Inosilicates Inosilicate Chains with Side Branches or Loops with P>2
01c: Aenigmatite and related species (Magbasite subgroup)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, rosaviolett

Streak color

weiß

Diaphaneity (Transparency)

transparent, durchscheinend

Lustre

Glasglanz

max. Birefringence

0.018
Birefringence chart\! Magbasite title=Birefringence chart Magbasite

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

1.597

RI value β

1.609

RI value γ / ε

1.615

Ri mean

1.607

2V angle

Biaxial (-) 70° (gemessen) 48.2 (berechnet)

Orientation

Z ^ c = 10°

Pleochroism

X = Y = farblos, Z = fliederfarben

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

67

Space Group

Cmma

Cell parameters a (Å)

18.9506(3)

Cell parameters b (Å)

22.5045(3)

Cell parameters c (Å)

5.2780(1)

Cell parameters a/b or c/a

0.842

Cell parameters c/b

0.235

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

2250.929

Crystal structure

M. D. Welch, R. H. Mitchell, A. R. Kampf, A. R. Chakhmouradian, D. Smith, M. Carter, and D. Gatta: Crystal structure and topological affinities of magbasite, KBaFe3+Mg7Si8O22(OH)2F6: a trellis structure related to amphibole and carpholite. Mineral Mag Vol. 78, Nr. 1 (2014) S. 29-45.

X-Ray Powder Diffraction

3.57(80),
3.13(50),
2.98(70),
2.84(60),
2.71(40),
2.56(100),
2.40(50),
1.99(50)
XRD chart Magbasite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.41 (gemessen)

3.326 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

China/Innere Mongolei (Neimenggu)/Baotou/Vereinigtes Darhan-Mumingan-Banner/Bayan Obo/Bayan Obo SE-Fe-Nb-Lagerstätte

Preface

Name from

der chemischen Zusammensetzung, die Magnesium, Barium und Silicium enthält

Author (Name, Year)

Semenov & Khomyakov & Bykova, 1965

References

Doklady Akademiia Nauk, SSSR (USSR) (in Russian) 163 (1965), 718

Mineralogical Magazine, 78 (2014), 29–45 [Neue Formel, Kristallstruktur]

Fernando Cámara, Olivier C. Gagne, Yulia Uvarova, Dmitriy I. Belakovskiy: New Mineral Names. American Mineralogist Vol. 99, Nr. 11-12 (2014) S. 2437-2444.

Other languages

German

Magbasit

Spanish

Magbasita

French

Magbasite

English

Magbasite

Russian

Магбасит

https://catalogmineralov.ru/mineral/magbasite.html

CNMNC symbol

Symbol

Mgb

Locations with GPS information

IDs

GUSID (Global unique identifier short form) UCbzlomQDkKlXzrV5IoMAA
GUID (Global unique identifier) 96F32650-9089-420E-A55F-3AD5E48A0C00
Database ID 2288