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Alumino-ferro-barroisite

Collectors Summary

Hardness (Mohs) 5.5
Solubility -
Crystal System monoklin, C2/m

Additional information / Summary

Hypothetische Amphibol Spezies: Der Name und die Idealformel wurde von der IMA anerkannt, wurde aber noch nicht in der Natur gefunden

Chemism

Chemical formula

☐CaNa(Fe2+)3Al2(Si7Al)O22(OH)2

Chemical composition

Aluminium, Calcium, Eisen, Natrium, Silicium, Sauerstoff, Wasserstoff, Vakanz

Unit weight: 894.14930881 u; Number of atoms in the formula: 42

Info

Empirical formula:

VcCaNa(Fe)3Al2(Si7Al)O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Vacancy

Vc

0.00

1

2.38

0.0000000

0.0000000
Hydrogen

H

0.23

2

4.76

1.0079470

2.0158940
Oxygen

O

42.94

24

57.14

15.9994300

383.9863200
Sodium

Na

2.57

1

2.38

22.9897702

22.9897702
Aluminium

Al

9.05

3

7.14

26.9815382

80.9446146
Silicon

Si

21.99

7

16.67

28.0855300

196.5987100
Calcium

Ca

4.48

1

2.38

40.0784000

40.0784000
Iron

Fe

18.74

3

7.14

55.8452000

167.5356000

Strunz 9th edition incl. updates

9.DE.20

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
E: Ketten- und Bandsilikate mit 2-periodischen Doppelketten, Si4O11; Amphibol-Familie, Klinoamphibole
20:

Classification by Hölzel

9.DI.340

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
I: Amphiboles; Sodiccalcic Amphiboles
3: Barroisite-Group

IMA status

Hypothetische Amphibol Spezies: Der Name und die Idealformel wurde von der IMA anerkannt, wurde aber noch nicht in der Natur gefunden

Mineral status

Mineralstatus fragwürdig

IMA Classification

IMA Classification

 Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Sodium-calcium amphiboles  ⇒ Barroisite (Bar) amphiboles

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

-

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

-

Cell parameters c/b

-

Cell parameters α

-

Cell parameters β

-

Cell parameters γ

-

Z

-

Volume (ų)

-

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Instability

-

Preface

Author (Name, Year)

Leake et al., 1997

References

Canadian Mineralogist 35 (1997), 219

IMA group assignments

 
Amphibole supergroup
 
 
 

 
 
(OH,F,Cl)-dominant amphiboles
 
 
 

 
 
 
Sodium-calcium amphiboles
 
 
 

 
 
 
 
Barroisite (Bar) amphiboles
 
 
 

 
 
 
 
 
Alumino-barroisite ?
☐CaNaMg3Al2(Si7Al)O22(OH)2
monoklin
C2/m

 
 
 
 
 
Alumino-ferro-barroisite ?
☐CaNa(Fe2+)3Al2(Si7Al)O22(OH)2
monoklin
C2/m

 
 
 
 
 
Barroisite
☐(NaCa)(Mg3Al2)(Si7Al)O22(OH)2
monoklin
C2/m

 
 
 
 
 
Ferri-barroisite
CaNa(Fe2+,Mg)3Fe3+2[AlSi7O22](OH)2
monoklin
C2/m

 
 
 
 
 
Ferri-ferro-barroisite
NaCa(Fe2+)3(Fe3+)2(Si7Al)O22(OH)2
monoklin
C2/m

 
 
 
 
 
Ferro-barroisite
☐NaCa(Fe2+3Al2)(Si7Al)O22(OH)2
monoklin
C2/m

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Actuality: 12. Sep 2024 - 18:17:55

Other languages

German

Alumino-Ferro-Barroisit

French

Alumino-Ferrobarroisite

English

Alumino-ferro-barroisite

Spanish

Alumino-ferrobarroisita

Alternative Name

English

Alumino-ferrobarroisite

German

Aluminoferrobarroisit

Aluminoferrobarroisita

Aluminoferrobarroisite

Ferro-aluminobarroisite

IDs

GUSID (Global unique identifier short form) oIewb1tdy0eCFoDYRrl79A
GUID (Global unique identifier) 6FB087A0-5D5B-47CB-8216-80D846B97BF4
Database ID 87