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Ferro-ferri-hornblende

Additional Functions

Collectors Summary

Crystal System monoklin, C2/m

Chemism

Chem­ical formula

☐Ca2(Fe2+4Fe3+)(Si7Al)O22(OH)2

Chem­ical com­po­si­tion

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

Unit weight: 968.96526221 u; Number of atoms in the formula: 42

Info

Empirical formula:

VcCa2(Fe4Fe)(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

0.21

2

4.76

1.0079470

2.0158940

Oxygen

O

39.63

24

57.14

15.9994300

383.9863200

Aluminium

Al

2.78

1

2.38

26.9815382

26.9815382

Silicon

Si

20.29

7

16.67

28.0855300

196.5987100

Calcium

Ca

8.27

2

4.76

40.0784000

80.1568000

Iron

Fe

28.82

5

11.90

55.8452000

279.2260000

Strunz 9th edi­tion incl. updates

9.DE.25

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

Lapis Clas­sifica­tion

VIII/F.10-055

VIII: SILIKATE
F: Ketten- und Bandsilikate
10: Zweierbänder [Si4O11] 6-; Amphibol-Gruppe; Ca2-Amphibole

IMA sta­tus

anerkannt CNMNC Aug. 2015 - CNMNC Newsletter No. 27 Okt. 2015

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Classification

Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Calcium amphiboles  ⇒ Hornblende Amphibole

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

9.9307(5)

Cell param­e­ters b (Å)

18.223(1)

Cell param­e­ters c (Å)

5.3190(3)

Cell param­e­ters a/b or c/a

0.545

Cell param­e­ters c/b

0.292

Cell param­e­ters α

90°

Cell param­e­ters β

104.857(1)

Cell param­e­ters γ

90°

Volumne (ų)

930.385

Kristall struc­ture

Struktur bestimmt

X-Ray Pow­der Diffrac­tion

8.493(100), 3.406(26), 3.151(47), 2.728(69), 2.615(32), 2.555(37), 2.359(38), 2.180(25)

XRD chart Ferro-ferri-hornblende

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

(Co-)Type locality

(Co-)Type locality

Italien/Piemont (Piemonte), Region/Turin (Torino), Provinz/Traversella/Miniera Traversella

Type material

Museo di Mineralogia, Dipartimento di Scienze della Terra e dell’Ambiente, Università di Pavia

Collection number of type material

2015-01

Preface

Author (Name, Year)

Oberti, R.,Boiocchi, M.,Hawthorne, F.C., Ball, N.A.,Pagano, R. und Pagano, A. (2015)

References

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

Oberti, R.,Boiocchi, M.,Hawthorne, F.C., Ball, N.A.,Pagano, R. and Pagano, A. (2015) Ferro-ferri-hornblende, IMA 2015-054. CNMNC Newsletter No. 27, October 2015, page 1227; Mineralogical Magazine, 79, 1229-1236

IMA group assignments

Other languages

German

Ferro-Ferri-Hornblende

English

Ferro-ferri-hornblende

Russian

Ферроферригорнблендит

CNMNC (IMA)-Number

IMA 2015-054

CNMNC symbol

Symbol

Ffhbl

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

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