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Arfvedsonite

Pictures (54 Images total)

Arfvedsonit
Views (Image: 1165413330): 4456, Rating: 8.71
Arfvedsonit

Fundort Mont Saint-Hilaire, Quebéc, Kanada
Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-06
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada
Arfvedsonit
Views (Image: 1275414817): 4634, Rating: 8.67
Arfvedsonit

Arfvedsonit auf Orthoklas. Größe: 7,4 x 4,7 x 3,8 cm, Fundort: Mt. Malosa, Zomba District, Malawi
Copyright: Dan Weinrich
Contribution: thdun5 2010-06-01
Locality: Mount Malosa / Zomba, Distrikt / Southern Region / Malawi
Arfvedsonit
Views (Image: 1343504498): 4901, Rating: 9.2
Arfvedsonit

Größe: 51x32 mm; Fundort: Mount Malosa, Zomba-Distrikt, Malawi
Copyright: Jewels-Fine-Minerals
Contribution: slugslayer 2012-07-28
Locality: Mount Malosa / Zomba, Distrikt / Southern Region / Malawi
Arfvedsonit
Views (Image: 1389559701): 2259
Arfvedsonit (SNr: A007238)

Prismatische schwarze Kristalle mit Quarz, BB = 4,2 mm, Fundort: Washington Pass, Okanogan Co., Washington, USA.
Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2014-01-12
Locality: Washington Pass / Okanogan Co. / Washington / USA
Arfvedsonit, Orthoklas
Views (Image: 1349555912): 10115
Arfvedsonit, Orthoklas

Größe: 95x95x45 mm; Fundort: Mount Malosa, Zomba-Distrikt, Malawi
Copyright: Watzl Minerals
Contribution: slugslayer 2012-10-06
Locality: Mount Malosa / Zomba, Distrikt / Southern Region / Malawi
Arfvedsonit-Tafeln auf Pektolith-Nadeln
Views (Image: 1165413188): 1055
Arfvedsonit-Tafeln auf Pektolith-Nadeln

Bildbreite: 3 mm; Fundort Mont Saint-Hilaire, Quebéc, Kanada
Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-06
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada

Collectors Summary

Color schwarz, graulich grün, bläulich grau
Streak color bläulich grau
Hardness (Mohs) 5.5
Solubility +++ HF
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

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

Chem­ical com­po­si­tion

Eisen, Magnesium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 927.3416246 u; Number of atoms in the formula: 42

Info

Empirical formula:

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

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.22

2

4.76

1.0079470

2.0158940
Oxygen

O

41.41

24

57.14

15.9994300

383.9863200
Sodium

Na

7.44

3

7.14

22.9897702

68.9693106
Magnesium

Mg

2.62

1

2.38

24.3050600

24.3050600
Silicon

Si

24.23

8

19.05

28.0855300

224.6842400
Iron

Fe

24.09

4

9.52

55.8452000

223.3808000

Anal­y­sis wt%

SiO2 : 50.16, Al2O3 : 1.10, TiO2 : 1.64, Fe2O3 : 9.12, FeO : 20.60, MnO : 2.27, MgO : 0.92, CaO : 1.32, Na2O : 3.61, K2O : 3.61, H2O : 1.68 (Ref: Canadian Mineralogist 65)

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.08-155

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

Clas­sifica­tion by Hölzel

9.DJ.420

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

Dana 8th edi­tion

66.01.03c.09

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, bekannt vor IMA 1959, vererbt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

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

Optical Properties

Color

schwarz, graulich grün, bläulich grau

Streak color

bläulich grau

Diaphane­ity (Trans­parency)

durchscheinend bis opak

max. Birefrin­gence

0.013
Birefringence chart\! Arfvedsonite title=Birefringence chart 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

1.685

RI value β

1.695

RI value γ / ε

1.698

Ri mean

1.693

2V angle

Biaxial (-) 69°

Optical Data Luminescence

Color LW-UV (365nm)

  

orange

LW-UV Intensity

stark

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)

9.88

Cell param­e­ters b (Å)

18.21

Cell param­e­ters c (Å)

5.31

Cell param­e­ters a/b or c/a

0.543

Cell param­e­ters c/b

0.292

Cell param­e­ters α

90°

Cell param­e­ters β

103.10

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

930.486

X-Ray Pow­der Diffrac­tion

8.57(100),
4.51(10),
3.412(10),
3.299(10),
3.179(40),
2.843(20),
2.718(10),
2.421(10)
XRD chart 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)

3.44 - 3.45 / Durchschnittlich = 3.44

3.31 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HF

(Co-)Type locality

(Co-)Type locality

Grönland/Kommune Kujalleq/Narsaq/Ilimaussaq-Komplex

Preface

Occurrences

in den meisten Alkali-Pegmatiten

Author (Name, Year)

Brooke, 1823

References

Canadian Mineralogist 41 (2003), 1355

IMA group assignments

Varieties

Juddite

Mangan-haltige Varietät von Arfvedsonit, mit einem Anteil von bis zu 7,7% (w/w) von MnO

Other languages

German

Arfvedsonit

Spanish

Arfvedsonita

French

Arfvedsonite

English

Arfvedsonite

Russian

Арфведсонит

Simplified Chinese

亚铁钠闪石

Traditional Chinese

亞鐵鈉閃石

Simplified Chinese

钠铁闪石

Japanese

ｱﾙﾍﾟｿﾞﾝ閃石

Alternative Name

Arfvedsonite (of Brooke)

English

Arfvedsonite (of Brooke)

Arfwedsonit

Arfwedsonita

Arfwedsonite

English

Manganuralite

Soda-Hornblende

English

Sodahornblende

Traditional Chinese

鈉角閃石

Traditional Chinese

鈉鈣閃石

Simplified Chinese

钠钙闪石

CNMNC symbol

Symbol

Arf

Rock part of

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

German pages

 DeWikiPedia - search for: Arfvedsonit
Google-Bilder-Suche - search for: Arfvedsonit
Mineralienatlas.de (Forum) - search for: Arfvedsonit

English pages

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

Russian pages

 Webmineral.ru - search for: Арфведсонит

Mineral Dealer

German pages

 hausen - Mineralgroßhandel - search for: Arfvedsonit
Crystal-Treasure.com - search for: Arfvedsonit
Bosse - search for: Arfvedsonit
Edelsteine Neuburg - Gundolf Fischer - search for: Arfvedsonit

Locations with GPS information