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Magnesio-arfvedsonite

Pictures (6 Images total)

Magnesio-Arfvedsonit
Views (File:
1178274515
): 1921
Magnesio-Arfvedsonit
Bildbreite: 10 mm; Fundort Laacher See-Vulkangebiet, Eifel, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Ahrweiler, Landkreis/Brohltal, Verbandsgemeinde/Laacher See
Mineral: Magnesio-arfvedsonite
Image: 1178274515
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Magnesio-Arfvedsonit

Bildbreite: 10 mm; Fundort Laacher See-Vulkangebiet, Eifel, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2007-05-04
Locality: Laacher See / Brohltal, Verbandsgemeinde / Ahrweiler, Landkreis / Rheinland-Pfalz / Deutschland
Magnesioarfvedsonit
Views (File:
1438524022
): 767
Magnesioarfvedsonit
Paragenese: oranger Eudialyt, Bariolamprophyllit, Nephilin,; Größe: 7 x 3 cm,; Fundort: Chibiny, Partomchorr, Marchenko Zone,
Copyright: uwe; Contribution: uwe
Collection: uwe
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Partomchorr
Mineral: Magnesio-arfvedsonite
Image: 1438524022
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Magnesioarfvedsonit

Paragenese: oranger Eudialyt, Bariolamprophyllit, Nephilin,; Größe: 7 x 3 cm,; Fundort: Chibiny, Partomchorr, Marchenko Zone,
Collection: uwe
Copyright: uwe
Contribution: uwe 2015-08-02
Locality: Partomchorr / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Magnesio-Arfvedsonit
Views (File:
1105877861
): 1364
Magnesio-Arfvedsonit
Schwarzer kurzprismatisch-tafeliger Magnesio-Arfvedsonit von 2,5 x 1,5 cm Größe Fundort: Wjunzpachk-Berg, Keivy-Massiv, Kola-Halbinsel, Russland
Copyright: McSchuerf; Contribution: Mineralienatlas
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Keivy-Massiv/Western Keivy Massif/Vyuntspakhk
Mineral: Magnesio-arfvedsonite
Image: 1105877861
License: Usage for Mineralienatlas project only
Magnesio-Arfvedsonit

Schwarzer kurzprismatisch-tafeliger Magnesio-Arfvedsonit von 2,5 x 1,5 cm Größe Fundort: Wjunzpachk-Berg, Keivy-Massiv, Kola-Halbinsel, Russland
Copyright: McSchuerf
Contribution: Mineralienatlas 2005-01-16
Locality: Vyuntspakhk / Western Keivy Massif / Keivy-Massiv / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Strontiumapatit: Fluorstrophit (Gelb-grün) und Magnesioarfvedsonit (schwarz)
Views (File:
1519208355
): 1116
Strontiumapatit: Fluorstrophit (Gelb-grün) und Magnesioarfvedsonit (schwarz)
Lepkhe-Nel'm; Seidozero-See, Lovozero, Kola-Halbinse; Murmansk, Nordwestrussland, Russland.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Doc Diether
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Seidozero-See/Lepkhe-Nel'm
Mineral: Fluorstrophite, Magnesio-arfvedsonite
Image: 1519208355
License: Usage for Mineralienatlas project only
Strontiumapatit: Fluorstrophit (Gelb-grün) und Magnesioarfvedsonit (schwarz)

Lepkhe-Nel'm; Seidozero-See, Lovozero, Kola-Halbinse; Murmansk, Nordwestrussland, Russland.
Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2018-02-21
Locality: Lepkhe-Nel'm / Seidozero-See / Lovozero / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Magnesio-Arfvedsonit
Views (File:
1643399464
): 193
Magnesio-Arfvedsonit
⚒ Süd Tirodi, Tirodi, Balaghat, Madhya Pradesh, IN. BB=6cm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Doc Diether
Location: Indien/Madhya Pradesh/Balaghat, Distrikt/Tirodi/Süd Tirodi Mine
Mineral: Magnesio-arfvedsonite
Image: 1643399464
License: Usage for Mineralienatlas project only
Magnesio-Arfvedsonit

⚒ Süd Tirodi, Tirodi, Balaghat, Madhya Pradesh, IN. BB=6cm.
Collection: Doc Diether
Copyright: Doc Diether
Contribution: Doc Diether 2022-01-28
Locality: Süd Tirodi Mine / Tirodi / Balaghat, Distrikt / Madhya Pradesh / Indien

Collectors Summary

Color grünlich schwarz, schwarz, himmelblau bis blau
Streak color bläulichgrau
Hardness (Mohs) 5.5
Cleavages vollkommen
Solubility +++ HF, - HCl
Crystal System monoklin, C2/m

Chemism

Chemical formula

Na3(Mg,Fe2+)4Fe3+Si8O22(OH)2

Chemical composition

Eisen, Magnesium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 864.2613446 u; Number of atoms in the formula: 42

Info

Empirical formula:

Na3(Mg0.75Fe0.25)4FeSi8O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.23

2

4.76

1.0079470

2.0158940
Oxygen

O

44.43

24

57.14

15.9994300

383.9863200
Sodium

Na

7.98

3

7.14

22.9897702

68.9693106
Magnesium

Mg

8.44

3

7.14

24.3050600

72.9151800
Silicon

Si

26.00

8

19.05

28.0855300

224.6842400
Iron

Fe

12.92

2

4.76

55.8452000

111.6904000

Analysis wt%

SiO2 : 53.70, Al2O3 : 1.85, Fe2O3 : 15.27, FeO : 3.56, MnO : 1.05, MgO : 9.50, Na2O : 10.40, K2O : 1.34, H2O : 1.38, F : 2.11 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 59)

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.08-150

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

Classification by Hölzel

9.DJ.400

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
J: Amphiboles; Sodic Amphiboles
4: Arfvedsonite-Group

Hey's Chemical Index of Minerals

14.24.02

14: Silicates not Containing Aluminum
24: Silicates of Fe, Mg and alkalis

Dana 8th edition

66.01.03c.08

66: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2
01: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2 with P=2 amphibole configuration
03c: Group 4, the sodic amphiboles

IMA status

anerkannt - CNMNC Newsletter No. 20, June 2014, page 553

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Sodium Amphiboles  ⇒ Arfvedsonite (Arf) amphiboles

Optical Properties

Color

grünlich schwarz, schwarz, himmelblau bis blau

Streak color

bläulichgrau

max. Birefringence

0.013
Birefringence chart\! Magnesio-arfvedsonite title=Birefringence chart Magnesio-arfvedsonite

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

1.636

RI value β

1.644

RI value γ / ε

1.649

Ri mean

1.643

2V angle

Biaxial (-) 75°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

9.867(1)

Cell parameters b (Å)

17.928(2)

Cell parameters c (Å)

5.2839(6)

Cell parameters a/b or c/a

0.550

Cell parameters c/b

0.295

Cell parameters α

90°

Cell parameters β

103.799(2)º

Cell parameters γ

90°

Z

2

Volume (ų)

907.722

X-Ray Powder Diffraction

8.451(46), 3.399(68), 3.273(39), 3.144(63), 2.970(34), 2.708(100), 2.526(60), 2.167(37)
XRD chart Magnesio-arfvedsonite

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)

3.10 (berechnet)

3.162 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen

Instability

+++ HF, - HCl

(Co-)Type locality

(Co-)Type locality

Type material

Department of Earth and Planetary Sciences, American Museum of Natural History, New York, NY, USA

Collection number of type material

H35024

Preface

Author (Name, Year)

Roberta Oberti, Massimo Boiocchi, Frank C. Hawthorne, Neil A. Ball and George E. Harlow (2014)

References

Rock-forming Minerals (Deer, Howie & Zussmann), 2B, 2nd ed. (1997), Table 33, anal. 5 und 6

American Mineralogist 63 (1978), 1023.

Canadian Mineralogist 25 (1987), 739.

Mineralogical Record 29 (1998), 169-174.

Contributions to Mineralogy and Petrology 140 (2000), 135.

Neues Jahrbuch für Mineralogie, Abhandlungen 177 (2002), 199.

Canadian Mineralogist 41 (2003), 1355.

Canadian Mineralogist 44(1), 1-21.

Oberti, R., Boiocchi, M., Hawthorne, F.C., Ball, N.A. and Harlow, G.E. (2014) Magnesio-arfvedsonite, IMA 2013-137. CNMNC Newsletter No. 20, June 2014, page 553; Mineralogical Magazine, 78, 549-558.

IMA group assignments

Varieties

Anophorite

Ausgewiesen als Titan-haltigen, Calcium-haltigen Magnesium-Arfvedsonit

Other languages

German

Magnesio-Arfvedsonit

French

Magnesio-Arfvedsonite

English

Magnesio-arfvedsonite

Spanish

Magnesioarfvedsonita

Russian

Магнезиоарфведсонит

Japanese

苦土ｱﾙﾍﾞｿﾞﾝ閃石

Alternative Name

English

Imerinite

English

Magnesioarfvedsonite

English

Rezhikite

Japanese

苦土アルヴェゾン閃石

Simplified Chinese

镁亚铁纳闪石

Simplified Chinese

镁钠铁闪石

CNMNC (IMA)-Number

IMA 2013-137

CNMNC symbol

Symbol

Marf

Locations with GPS information

IDs

GUSID (Global unique identifier short form) MJ_0hjNEFk6Rx2-4AwlKbw
GUID (Global unique identifier) 86F49F30-4433-4E16-91C7-6FB803094A6F
Database ID 2291