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Ferro-anthophyllite (Ferro-Anthophyllit)

Additional Functions

Collectors Summary

Color graugrün, grün, dunkelbraun
Streak color grauweiß
Lustre Glasglanz, Perlmuttglanz
Hardness (Mohs) 5.50 - 6.00
Cleavages vollkommen
Crystal System orthorhombisch, Pnma

Chemism

Chem­ical formula

☐Fe2+2Fe2+5Si8O22(OH)2

Chem­ical com­po­si­tion

Eisen, Silicium, Sauerstoff, Wasserstoff, Vakanz

Unit weight: 1001.60285401 u; Number of atoms in the formula: 42

Info

Empirical formula:

VcFe2Fe5Si8O22(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

0.20

2

4.76

1.0079470

2.0158940

Oxygen

O

38.34

24

57.14

15.9994300

383.9863200

Silicon

Si

22.43

8

19.05

28.0855300

224.6842400

Iron

Fe

39.03

7

16.67

55.8452000

390.9164000

Strunz 9th edi­tion incl. updates

9.DD.05

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
D: Ketten- und Bandsilikate mit 2-periodischen Doppelketten, Si4O11; Amphibol-Familie, Orthoamphibole
05:Amphibole: Ortho

Lapis Clas­sifica­tion

VIII/F.12-070

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

Clas­sifica­tion by Hölzel

9.DF.120

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

Hey's Chem­ical Index of Min­er­als

14.19.04

14: Silicates not Containing Aluminum
19: Silicates of Fe

Dana 8th edi­tion

66.01.02.03

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

IMA sta­tus

anerkannt, Neudefinition durch das Amphibol Subkommittee (1997)

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

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

Optical Properties

Color

graugrün, grün, dunkelbraun

Streak color

grauweiß

Lus­tre

Glasglanz, Perlmuttglanz

max. Birefrin­gence

0.020

Birefringence chart\! Ferro-anthophyllite title=Birefringence chart Ferro-anthophyllite

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

1.663

RI value β

1.672

RI value γ / ε

1.683

Ri mean

1.691

2V angle

Biaxial (+/-) 70° (gemessen) 79° (berechnet)

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pnma

Cell param­e­ters a (Å)

18.686

Cell param­e­ters b (Å)

18.358

Cell param­e­ters c (Å)

5.336

Cell param­e­ters a/b or c/a

1.018

Cell param­e­ters c/b

0.291

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1830.449

Physical Properties

Hard­ness (Mohs)

5.50 - 6.00

VHN (Hard­ness Vick­ers)

630 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.634 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen

Preface

Name from

für die Zugehörigkeit zu Anthophyllit

Author (Name, Year)

Winchell, 1931

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H350: Kann Krebs erzeugen., H372: Schädigt die Organe bei längerer oder wiederholter Exposition.

References

Mineralogical Record 29, 169-174.

American Mineralogist 61 (1976), 1267.

Canadian Mineralogist 35 (1997), 219.

Canadian Mineralogist 41 (2003), 1355.

Hawthorne, Frank C., and Roberta Oberti (2006), On the classification of amphiboles - Canadian Mineralogist 44(1), 1-21.

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

Other languages

German

Ferro-Anthophyllit

French

Ferro-Anthophyllite

Spanish

Ferro-anthophyllita

English

Ferro-anthophyllite

Russian

Ферроантофиллит

Simplified Chinese

铁直闪石

Alternative Name

German

Feranthophyllit

Spanish

Feranthophyllita

Feranthophyllite

Ferro-anthophyllite (of Winchell)

Ferro-anthophyllite (of Winchell)

Spanish

Ferroanthofyllita

German

Ferroanthophyllit

CNMNC symbol

Symbol

Fath

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Ferro-Anthophyllit
Google-Bilder-Suche - search for: Ferro-Anthophyllit
Mineralienatlas.de (Forum) - search for: Ferro-Anthophyllit

English pages

Mindat - search for: Ferro-anthophyllite
Webmineral - search for:Ferro-anthophyllite
Handbook-of-Mineralogy - search for: Ferro-anthophyllite
RRUFF - Raman, XRD and other mineral data - search for: Ferro-anthophyllite
RRUFF - References and PDF downloads - search for: Ferro-anthophyllite
American-Mineralogist-Crystal-Structure-Database - search for: Ferro-anthophyllite
Strahlen.org - search for: Ferro-anthophyllite

Russian pages

Webmineral.ru - search for: Ферроантофиллит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Ferro-Anthophyllit
Bosse - search for: Ferro-Anthophyllit
Edelsteine Neuburg - Gundolf Fischer - search for: Ferro-Anthophyllit