https://weloveminerals.com/
https://www.mineraliengrosshandel.com
https://www.mineral-bosse.de
https://www.edelsteine-neuburg.de
https://www.mineralbox.biz
'._('einklappen').'
 

Magnesio-hornblende

Pictures (10 Images total)

Magnesiohornblende
Views (File:
1241351526
): 3777
Magnesiohornblende
Größe: 3,16 mm; Fundort: Nickenicher Sattel, Nickenich, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Matteo Chinellato; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Pellenz, Verbandsgemeinde/Nickenich/Nickenicher Sattel (Eicher Sattel)
Mineral: Magnesio-hornblende
Image: 1241351526
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Magnesiohornblende

Größe: 3,16 mm; Fundort: Nickenicher Sattel, Nickenich, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Matteo Chinellato
Contribution: Hg 2009-05-03
Locality: Nickenicher Sattel (Eicher Sattel) / Nickenich / Pellenz, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Magnesiohornblende
Views (File:
1241351626
): 5130
Magnesiohornblende
Größe: 4,26 mm; Fundort: Nickenicher Sattel, Nickenich, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Matteo Chinellato; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Pellenz, Verbandsgemeinde/Nickenich/Nickenicher Sattel (Eicher Sattel)
Mineral: Magnesio-hornblende
Image: 1241351626
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Magnesiohornblende

Größe: 4,26 mm; Fundort: Nickenicher Sattel, Nickenich, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Matteo Chinellato
Contribution: Hg 2009-05-03
Locality: Nickenicher Sattel (Eicher Sattel) / Nickenich / Pellenz, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Magnesiohornblende
Views (File:
1304853172
): 2074
Magnesiohornblende
Größe: 1,01 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Onano/Montenero (Pozzolana) Steinbruch
Mineral: Magnesio-hornblende
Image: 1304853172
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Magnesiohornblende

Größe: 1,01 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien
Copyright: Matteo Chinellato
Contribution: Hg 2011-05-08
Locality: Montenero (Pozzolana) Steinbruch / Onano / Viterbo, Provinz / Latium (Lazio), Region / Italien
Magnesiohornblende
Views (File:
1278152180
): 3590, Rating: 6
Magnesiohornblende
Kristallgröße: 4 mm, Fundort: Neuer Steinbruch, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien, Italien
Copyright: Dan Weinrich; Contribution: thdun5
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma/Ercolano/Neuer Steinbruch
Mineral: Magnesio-hornblende
Image: 1278152180
Rating: 6 (votes: 4)
License: Usage for Mineralienatlas project only
Magnesiohornblende

Kristallgröße: 4 mm, Fundort: Neuer Steinbruch, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien, Italien
Copyright: Dan Weinrich
Contribution: thdun5 2010-07-03
Locality: Neuer Steinbruch / Ercolano / Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Magnesiohornblende
Views (File:
1306350526
): 2167
Magnesiohornblende
Größe: 6,35 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Onano/Montenero (Pozzolana) Steinbruch
Mineral: Magnesio-hornblende
Image: 1306350526
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Magnesiohornblende

Größe: 6,35 mm; Fundort: Montenero, Onano, Viterbo, Latium, Italien
Copyright: Matteo Chinellato
Contribution: Hg 2011-05-25
Locality: Montenero (Pozzolana) Steinbruch / Onano / Viterbo, Provinz / Latium (Lazio), Region / Italien

You find additional specimen at the Geolitho Museum

Collectors Summary

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

Additional information / Summary

Kalzium (Calcium) Amphibole
Kalzium (Calcium) Amphibole
Diagramm nach 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
Copyright: Archiv: Mineralienatlas; Contribution: Stefan
Image: 1369382902
License: Usage for Mineralienatlas project only
Kalzium (Calcium) Amphibole

Chemism

Chemical formula

☐Ca2(Mg4Al)(Si7Al)O22(OH)2

Chemical composition

Aluminium, Calcium, Magnesium, Silicium, Sauerstoff, Wasserstoff, Vakanz

Unit weight: 813.94104041 u; Number of atoms in the formula: 42

Info

Empirical formula:

VcCa2(Mg4Al)(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

0.25

2

4.76

1.0079470

2.0158940
Oxygen

O

47.18

24

57.14

15.9994300

383.9863200
Magnesium

Mg

11.94

4

9.52

24.3050600

97.2202400
Aluminium

Al

6.63

2

4.76

26.9815382

53.9630764
Silicon

Si

24.15

7

16.67

28.0855300

196.5987100
Calcium

Ca

9.85

2

4.76

40.0784000

80.1568000

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.10-040

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

Classification by Hölzel

9.DH.700

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

Dana 8th edition

66.01.03a.04

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

Neudefinition von der CNMNC anerkannt; CNMNC Newsletter No. 39, October 2017

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, grünlich schwarz, dunkelgrün

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend bis opak

max. Birefringence

0.021
Birefringence chart\! Magnesio-hornblende title=Birefringence chart Magnesio-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°~

Optical Data Luminescence

Color LW-UV (365nm)

  

grünlich blau

LW-UV Intensity

sehr schwach

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

 9.830

Cell parameters b (Å)

18.0659(11)

Cell parameters c (Å)

5.2968(4)

Cell parameters a/b or c/a

0.545

Cell parameters c/b

0.293

Cell parameters α

90°

Cell parameters β

104.771(6)°

Cell parameters γ

90°

Z

2

Crystal structure

Amphibol-Supergruppe; Struktur bestimmt;

X-Ray Powder Diffraction

8.412(74),
3.386(48),
3.121(72),
2.709(100),
2.596(45),
2.541(57),
2.338(41),
2.164(39)
XRD chart Magnesio-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 - 3.47 / Durchschnittlich = 3.23

Instability

++ HF nur

(Co-)Type locality

(Co-)Type locality

Namibia/ǁKaras, Region/ǃNamiǂNûs (Lüderitz), Kreis/Lüderitz/Sanddünen von Lüderitz

Type material

Das Typmaterial ist in den Sammlungen des Museo di Mineralogia, Sistema Museale di Ateneo, Universität Pavia, Italien, Katalognummer 2017-01, hinterlegt.

Preface

Author (Name, Year)

Roberta Oberti, Massimo Boiocchi, Frank C. Hawthorne und Marco E. Ciriotti (2018)

References

Canadian Mineralogist 35 (1997), 219

Ishida, K. and Hawthorne, F.C. Assignment of infrared OH-stretching bands in calcic amphiboles through deuteration and heat treatment. American Mineralogist: 91 (2006) 871-879.

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

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. and Ciriotti, M.E. (2017) Magnesio-hornblende, IMA 2017-059. CNMNC Newsletter No. 39, October 2017, page 1284; Mineralogical Magazine, 81, 1279-1286.

R. Oberti, M. Boiocchi, F.C. Hawthorne, and M.E. Ciriotti: Magnesio-hornblende from Lüderitz, Namibia: mineral description and crystal chemistry. Mineralogical Magazine Vol. 82, Nr. 1 (2018) S. 145–157.

IMA group assignments

Other languages

German

Magnesio-Hornblende

English

Magnesio-hornblende

Spanish

Magnesiohornblenda

French

Magnesiohornblende

Russian

Магнезиогорнблендит

Japanese

ﾏｸﾞﾈｼｳﾑ角閃石

Alternative Name

Actinolitic hornblende

English

Gamisgradite

Tremolitic hornblende

CNMNC (IMA)-Number

IMA 2017-059

CNMNC symbol

Symbol

Mhbl

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 5XxuK6hWGEq2d338TmfhEg
GUID (Global unique identifier) 2B6E7CE5-56A8-4A18-B677-7DFC4E67E112
Database ID 2307