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Ferro-hornblende (Ferro-Hornblende)

Pictures (26 Images total)

Ferrohornblende
Views (File:
1293061778
): 4635, Rating: 9.6
Ferrohornblende
Größe: 1,32 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Onano/Montenero (Pozzolana) Steinbruch
Mineral: Ferro-hornblende
Image: 1293061778
Rating: 9.6 (votes: 5)
License: Usage for Mineralienatlas project only
Ferrohornblende

Größe: 1,32 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-12-23
Locality: Montenero (Pozzolana) Steinbruch / Onano / Viterbo, Provinz / Latium (Lazio), Region / Italien
Ferrohornblende
Views (File:
1293815100
): 4663, Rating: 9.6
Ferrohornblende
Größe: 0,92 und 0,95 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma
Mineral: Ferro-hornblende
Image: 1293815100
Rating: 9.6 (votes: 5)
License: Usage for Mineralienatlas project only
Ferrohornblende

Größe: 0,92 und 0,95 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-12-31
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Ferrohornblende
Views (File:
1293061689
): 1058
Ferrohornblende
Größe: 0,81 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Onano/Montenero (Pozzolana) Steinbruch
Mineral: Ferro-hornblende
Image: 1293061689
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Ferrohornblende

Größe: 0,81 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-12-23
Locality: Montenero (Pozzolana) Steinbruch / Onano / Viterbo, Provinz / Latium (Lazio), Region / Italien
Ferrohornblende
Views (File:
1293061884
): 2535
Ferrohornblende
Bildbreite: 3,12 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Onano/Montenero (Pozzolana) Steinbruch
Mineral: Ferro-hornblende
Image: 1293061884
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Ferrohornblende

Bildbreite: 3,12 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-12-23
Locality: Montenero (Pozzolana) Steinbruch / Onano / Viterbo, Provinz / Latium (Lazio), Region / Italien
Ferrohornblende
Views (File:
1396551855
): 1669
Ferrohornblende
Bildbreite: 3,14 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Onano/Montenero (Pozzolana) Steinbruch
Mineral: Ferro-hornblende
Image: 1396551855
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Ferrohornblende

Bildbreite: 3,14 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien

Copyright: Matteo Chinellato
Contribution: Hg 2014-04-03
Locality: Montenero (Pozzolana) Steinbruch / Onano / Viterbo, Provinz / Latium (Lazio), Region / Italien
Ferrohornblende
Views (File:
1275673662
): 3942
Ferrohornblende
Kristallgröße: 0,9 mm, Fundort: Tre Croci, Vetralla, Lago de Vico, Latium, Italien
Copyright: Luigi Mattei; Contribution: thdun5
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Vetralla/Tre Croci
Mineral: Ferro-hornblende
Image: 1275673662
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Ferrohornblende

Kristallgröße: 0,9 mm, Fundort: Tre Croci, Vetralla, Lago de Vico, Latium, Italien

Copyright: Luigi Mattei
Contribution: thdun5 2010-06-04
Locality: Tre Croci / Vetralla / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien

Collectors Summary

Color braun, grün, grünlich braun, schwarz
Streak color weiß
Hardness (Mohs) 5.5
Crystal System monoklin, C2/m

Chemism

Chemical formula

☐Ca2(Fe2+4Al)(Si7Al)O22(OH)2

Chemical composition

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

Unit weight: 940.10160041 u; Number of atoms in the formula: 42

Info

Empirical formula:

VcCa2(Fe4Al)(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

40.85

24

57.14

15.9994300

383.9863200

Aluminium

Al

5.74

2

4.76

26.9815382

53.9630764

Silicon

Si

20.91

7

16.67

28.0855300

196.5987100

Calcium

Ca

8.53

2

4.76

40.0784000

80.1568000

Iron

Fe

23.76

4

9.52

55.8452000

223.3808000

Analysis wt%

SiO2 : 41.49, Al2O3 : 11.60, Fe2O3 : 2.89, FeO : 21.94, MnO : 0.79, MgO : 8.39, CaO : 9.86, Na2O : 2.07, K2O : 0.58, H2O : 0.93 (Ref: Zeitschrift ür Kristallographie 29)

Strunz 9th edition incl. updates

9.DE.10

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

Lapis Classification

VIII/F.10-050

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

Classification by Hölzel

9.DH.720

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
H: Amphiboles; Calcic Amphiboles
7: Hornblende-Group

Dana 8th edition

66.01.03a.05

66: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2
01: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2 with P=2 amphibole configuration
03a: Group 2, the calcic amphiboles

IMA status

anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

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

Optical Properties

Color

braun, grün, grünlich braun, schwarz

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend bis opak

max. Birefringence

0.016

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

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

1.688

RI value β

1.698

RI value γ / ε

1.704

Ri mean

1.697

2V angle

Biaxial (-) 45°~

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

9.96

Cell parameters b (Å)

18.19

Cell parameters c (Å)

5.32

Cell parameters a/b or c/a

0.548

Cell parameters c/b

0.292

Cell parameters α

90°

Cell parameters β

104.87

Cell parameters γ

90°

Z

2

Volumne (ų)

931.559

X-Ray Powder Diffraction

8.52(100),
3.413(50),
3.309(30),
3.159(90),
2.728(70),
2.610(50),
2.180(40),
1.452(40)

XRD chart Ferro-hornblende

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.23 Ø; 3 - 3.47

3.351 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Leake, 1978

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 - Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97 (2012), pages 2031–2048

IMA group assignments

Other languages

German

Ferro-Hornblende

English

Ferro-hornblende

Spanish

Ferrohornblenda

French

Ferrohornblende

Russian

Феррогорнблендит

Simplified Chinese

棕闪石

Japanese

鉄普通角閃石

Simplified Chinese

铁角闪石

Alternative Name

German

Barkevicit

Spanish

Barkevicita

Barkevicite

Barkevikit

Spanish

Barkevikita

English

Barkevikite

Ferro-actinolitic-hornblende

Ferrohornblende

CNMNC symbol

Symbol

Fhbl

Locations with GPS information