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Sodic-ferro-anthophyllite

Collectors Summary

Hardness (Mohs) 5 - 6
Crystal System orthorhombisch, Pnma

Additional information / Summary

Name empfohlen vom Amphibol Subkomitee (1997) für ein theorethischen Na-Fe2+Endglied der Ampibol-Serie. Um besser zwischen Amphibol Endglieder Zusammensetzungen zu unterscheiden, hat die CNMNC beschlossen, Natron-Ferro-Anthophyllit umzubenennen. Der Name ist noch nicht (Nov 2012) veröffentlicht.

Chemism

Chemical formula

NaFe2+7[OH|Al0.5Si3.5O11]2

Chemical composition

Aluminium, Eisen, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 1023.4886324 u; Number of atoms in the formula: 42

Info

Empirical formula:

NaFe7[OHAl0.5Si3.5O11]2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.20

2

4.76

1.0079470

2.0158940

Oxygen

O

37.52

24

57.14

15.9994300

383.9863200

Sodium

Na

2.25

1

2.38

22.9897702

22.9897702

Aluminium

Al

2.64

1

2.38

26.9815382

26.9815382

Silicon

Si

19.21

7

16.67

28.0855300

196.5987100

Iron

Fe

38.19

7

16.67

55.8452000

390.9164000

Analysis wt%

SiO2 : 43.94, Al2O3 : 5.33, FeO : 36.78, MgO : 8.84, Na2O : 3.24, H2O : 1.88 (Ref: berechnet)

Strunz 9th edition incl. updates

9.DE.05

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

Lapis Classification

VIII/F.12-090

VIII: SILIKATE
F: Ketten- und Bandsilikate
12: Zweierbänder [Si4O11] 6-; Amphibol-Gruppe; Orthorhombische Amphibole

Classification by Hölzel

9.DF.180

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
F: Amphiboles; Orthorhombic Amphiboles
1: Anthophyllite-Group

Dana 8th edition

66.01.02.04a

66: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2
01: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2 with P=2 amphibole configuration

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Magnesium-iron-manganese amphiboles  ⇒ Anthophyllite (Ath) amphiboles

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pnma

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5 - 6

Preface

Author (Name, Year)

Leake etc. (1997)

References

Canadian Mineralogist 35 (1997), 219

Frank C. Hawthorne, Roberta Oberti, George E. Harlow, Walter V. Maresch, Robert F. Martin, John C. Schumacer, Mark D. Welch (2012): Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97, pages 2031–2048

IMA group assignments





 
 
 
 
 
(Mg,Fe2+)7Si8O22(OH)2
orthorhombisch
Pnma

 
 
 
 
 
☐Fe2+2Fe2+5Si8O22(OH)2
orthorhombisch
Pnma

 
 
 
 
 
(Mg,Fe2+)2Mg5[OH|Si4O11]2·H2O
orthorhombisch
 

 
 
 
 
 
(Fe2+,Mn2+)2Fe52+[Oh|Si4O11]2
orthorhombisch
Pnmn

 
 
 
 
 
NaMg2Mg5(Si7Al)O22(OH)2
orthorhombisch
Pnma

 
 
 
 
 
NaFe2+7[OH|Al0.5Si3.5O11]2
orthorhombisch
Pnma

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Actuality: 05. Aug 2022 - 20:14:12

Other languages

German

Natrium-Ferro-Anthophyllit

French

Sodic-Ferro-Anthophyllite

English

Sodic-ferro-anthophyllite

Spanish

Sodioferroantofilita

Alternative Name

German

Natriumferroanthophyllit

English

Sodicferroanthophyllite