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Hornblende

Pictures (95 Images total)

Hornblende
Views (File:
1295138039
): 11746, Rating: 8.83
Hornblende
Größe: 1,5 mm; Fundort: Case Collina (Toscopomici Steinbruch), Pitigliano, Grosseto, Italien
Copyright: Enrico Bonacina; Contribution: Hg
Location: Italien/Toskana (Toscana)/Grosseto, Provinz/Pitigliano/Case Collina (Toscopomici Steinbruch)
Mineral: Hornblende
Image: 1295138039
Rating: 8.83 (votes: 6)
License: Usage for Mineralienatlas project only
Hornblende

Größe: 1,5 mm; Fundort: Case Collina (Toscopomici Steinbruch), Pitigliano, Grosseto, Italien

Copyright: Enrico Bonacina
Contribution: Hg 2011-01-16
Locality: Case Collina (Toscopomici Steinbruch) / Pitigliano / Grosseto, Provinz / Toskana (Toscana) / Italien
Hornblende
Views (File:
1094648268
): 22940, Rating: 8.6
Hornblende
Ein häufiges Mineral in der Vulkaneifel. Hornblende in orangefarbigen fast durchsichtigen Kristallen (Eigenfund); Fundort: Bellerberg / Ettringen / Eifel / Deutschland
Copyright: geni; Contribution: Mineralienatlas
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Hornblende
Image: 1094648268
Rating: 8.6 (votes: 5)
License: Usage for Mineralienatlas project only
Hornblende

Ein häufiges Mineral in der Vulkaneifel. Hornblende in orangefarbigen fast durchsichtigen Kristallen (Eigenfund); Fundort: Bellerberg / Ettringen / Eifel / Deutschland

Copyright: geni
Contribution: Mineralienatlas 2004-09-08
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Hornblende
Views (File:
1199662277
): 28236, Rating: 8.8
Hornblende
Hornblende in radialstrahligen Aggregaten, Stufenbreite ca 5cm; Kirschlingsgraben, Spessart
Copyright: Erik; Contribution: Erik
Location: Deutschland/Bayern/Unterfranken, Bezirk/Aschaffenburg, Landkreis/Bessenbach/Oberbessenbach/Kirschlingsgraben
Mineral: Hornblende
Image: 1199662277
Rating: 8.8 (votes: 5)
License: Usage for Mineralienatlas project only
Hornblende  D

Hornblende in radialstrahligen Aggregaten, Stufenbreite ca 5cm; Kirschlingsgraben, Spessart

Copyright: Erik
Contribution: Erik 2008-01-07
Locality: Kirschlingsgraben / Oberbessenbach / Bessenbach / Aschaffenburg, Landkreis / Unterfranken, Bezirk / Bayern / Deutschland
Hornblende
Views (File:
1246697447
): 9437
Hornblende
Größe: 9,24 mm; Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma/Ercolano/San Vito/Steinbruch San Vito (Cava San Vito)
Mineral: Hornblende
Image: 1246697447
Rating: 8.67 (votes: 3)
License: Usage for Mineralienatlas project only
Hornblende

Größe: 9,24 mm; Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2009-07-04
Locality: Steinbruch San Vito (Cava San Vito) / San Vito / Ercolano / Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Hornblende
Views (File:
1469869914
): 4672
Hornblende
vom Rothenberg bei Bell in der Eifel, Rheinland-Pfalz, D; langtafelige rehbraune Kristalle; BB = 6,0 mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A002470, Donator: Manfred Seitz
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mendig, Verbandsgemeinde/Bell/Rothenberg
Mineral: Hornblende
Image: 1469869914
Rating: 8.67 (votes: 3)
License: Usage for Mineralienatlas project only
Hornblende (SNr: A002470)

vom Rothenberg bei Bell in der Eifel, Rheinland-Pfalz, D; langtafelige rehbraune Kristalle; BB = 6,0 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2016-07-30
Locality: Rothenberg / Bell / Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Hornblende
Views (File:
1406309427
): 12808
Hornblende
Prismatische gelbbraune Kristalle, BB = 2,5 mm, Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A020309, Donator: Manfred Seitz
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mayen/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Hornblende
Image: 1406309427
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Hornblende (SNr: A020309)

Prismatische gelbbraune Kristalle, BB = 2,5 mm, Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2014-07-25
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color grün bis schwarz
Streak color graugrün,graubraun
Hardness (Mohs) 5.5
Cleavages Hornblende bei 124°, Augit bei 87°
Solubility ++ HF nur

Additional information / Summary

Hornblende ist keine eigene Mineralart

Als Hornblende werden Minerale der Gruppe VIII/F.10 insbesondere

bezeichnet.
Der Name wird auch als Synonym für Calcium-Amphibole verwendet.

Chemism

Chemical formula

(Ca,Na,K)2-3 (Mg,Fe,Al)5 [(OH,F)2 /(Si,Al)2Si6O22

Chemical composition

Aluminium, Calcium, Eisen, Magnesium, Natrium, Silicium, Fluor, Kalium, Sauerstoff, Wasserstoff

Unit weight: 868.438225475 u; Number of atoms in the formula: 41

Info

Empirical formula:

(Ca0.6Na0.3K0.1)2.5(Mg0.6Fe0.3Al0.1)5[((OH)0.75F0.25)2/(Si0.75Al0.25)2Si6O22

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.17

1.5

3.66

1.0079470

1.5119205

Oxygen

O

43.29

23.5

57.32

15.9994300

375.9866050

Fluorine

F

1.09

0.5

1.22

18.9984033

9.4992016

Sodium

Na

1.99

0.75

1.83

22.9897702

17.2423277

Magnesium

Mg

8.40

3

7.32

24.3050600

72.9151800

Aluminium

Al

3.11

1

2.44

26.9815382

26.9815382

Silicon

Si

24.26

7.5

18.29

28.0855300

210.6414750

Potassium

K

1.13

0.25

0.61

39.0983100

9.7745775

Calcium

Ca

6.92

1.5

3.66

40.0784000

60.1176000

Iron

Fe

9.65

1.5

3.66

55.8452000

83.7678000

IMA status

nicht anerkannt

Mineral status

Reihe/Gruppe/Serie/Folge

Variety / polytype of

Ferro-hornblende, Magnesio-hornblende

Optical Properties

Color

grün bis schwarz

Streak color

graugrün,graubraun

max. Birefringence

0.021

Birefringence chart\! Hornblende title=Birefringence chart 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

1.645

RI value β

1.658

RI value γ / ε

1.666

Ri mean

1.656

2V angle

Biaxial (-) 67°~

Crystallography

Cell parameters a (Å)

9.783

Cell parameters b (Å)

17.935

Cell parameters c (Å)

5.297

Cell parameters a/b or c/a

0.545

Cell parameters c/b

0.295

Cell parameters α

90°

Cell parameters β

104.63

Cell parameters γ

90°

Z

2

Volumne (ų)

899.2

X-Ray Powder Diffraction

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

Density (g/cm³)

3.15 (gemessen)

3.207 ( ρ calc. Mineralienatlas )

Cleavages

Hornblende bei 124°, Augit bei 87°

Instability

++ HF nur

Other languages

Dutch

Hoornblende

Spanish

Hornblenda

Polish

Hornblenda

English

Hornblende

German

Hornblende

Swedish

Hornblände

Portuguese

Horneblenda

Italian

Orneblenda

Czech

Rohovec

Finnish

Sarvivälke

Hebrew

הורנבלנדה

Japanese

普通角閃石

Alternative Name

German

Achromait

Spanish

Achromaita

Achromaite

Aluminous Amphibole

Amphibolite (of Breithaupt)

Cork Fossil

Orniblenda

German

Rimpylit

Spanish

Rimpylita

Rimpylite

German

Speziait

Spanish

Speziaita

Speziaite

Syntagmatite (of Breithaupt)

Simplified Chinese

普通角闪石

CNMNC symbol

Symbol

Hbl

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Refresh list | View legend

Hint

- Essential mineral - Important for the classification of the rock.
- Accessory or non-essential mineral - this minerals are common, sometimes major part of, but are not always present.

Actuality: 05. Jun 2023 - 21:36:10

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 26dWpYUwaEeqEzMgYW25Ww
GUID (Global unique identifier) A556A7DB-3085-4768-AA13-3320616DB95B
Database ID 4654