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Hornblende

Pictures (79 Images total)

Hornblende
Views (Image: 1199662277): 25200, Rating: 8.8
Hornblende

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 (Image: 1094648268): 21054, 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 2004-09-08
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Hornblende
Views (Image: 1246697447): 7316
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 (Image: 1295138039): 8564
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 (Image: 1406309427): 11467
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
Hornblende
Views (Image: 1469869914): 3900
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

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.

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

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

Rock part of






 
 
 
 
 
 

 
 
 
 
 
 
 

 
 
 
 
 
 
 
 

 
 
 
 
 
 

 
 
 
 
 
 
 

 
 
 
 
 
 
 
 

 
 
 
 
 
 

 
 
 
 
 
 
 

 
 
 
 
 
 
 
 

 
 
 
 
 
 


 
 
 
 
 
 

 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
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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: 23. Sep 2021 - 23:08:20

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

German pages

DeWikiPedia - search for: Hornblende
Google-Bilder-Suche - search for: Hornblende
Mineralogisch-Petrographisches-Institut Hamburg - search for: Hornblende

English pages

Mindat - search for: Hornblende
Webmineral - search for:Hornblende
Handbook-of-Mineralogy - search for: Hornblende
RRUFF - Raman, XRD and other mineral data - search for: Hornblende
RRUFF - References and PDF downloads - search for: Hornblende
American-Mineralogist-Crystal-Structure-Database - search for: Hornblende
Athena - search for: Hornblende

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Hornblende
Crystal-Treasure.com - search for: Hornblende
Bosse - search for: Hornblende

Locations with GPS information