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Riebeckite (Riebeckit)

Pictures (10 Images total)

Riebeckit
Views (Image: 1267706528): 4697
Riebeckit

FO: Mountain Pass Mine,San Bernadino Co.,California,USA; Bildbreite ca.: 12 mm

Collection: rtbstone
Copyright: rtbstone
Contribution: rtbstone 2010-03-04
Locality: Mountain Pass Mine / Ivanpah / Mountain Pass District / San Bernardino Co. / Kalifornien (California) / USA
Riebeckit
Views (Image: 1165572391): 4336
Riebeckit

Fundort Mont Saint-Hilaire, Quebéc, Kanada

Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-08
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec / Kanada
Riebeckit
Views (Image: 1393063306): 1682
Riebeckit

Wittenoon, Western Australia, Australia. Stufengröße: 3,3 x 2,6 cm.

Copyright: skibbo
Contribution: skibbo 2014-02-22
Locality: Wittenoom / Ashburton Shire / Western Australia / Australien
Riebeckit
Views (Image: 1195933398): 5179
Riebeckit

Fundort: Oranje, Südafrika

Copyright: Xyrx
Contribution: Xyrx 2007-11-24
Locality: Südafrika
Riebeckit
Views (Image: 1088547226): 4912
Riebeckit

ca. 5 cm; Fundort: Deutschland / Nürnberg

Copyright: Stefan
Contribution: Mineralienatlas 2004-06-30
Locality: Nürnberg / Mittelfranken, Bezirk / Bayern / Deutschland
Hydroastrophyllit auf Riebeckit
Views (Image: 1243693611): 818
Hydroastrophyllit auf Riebeckit

Bildbreite: 15 mm; Fundort: West-Keivy, Westliches Keivy-Massiv, Kola-Halbinsel, Murmansk, Russland

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-05-30
Locality: Western Keivy Massif / Keivy-Massiv / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color blau, schwarz, dunkelgrün
Streak color grünlich braun
Hardness (Mohs) 5
Solubility +++ HF, - andere Säuren
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

Na2(Fe2+,Mg)3Fe23+Si8O22(OH)2

Chem­ical com­po­si­tion

Eisen, Magnesium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 912.2368894 u; Number of atoms in the formula: 41

Info

Empirical formula:

Na2(Fe0.75Mg0.25)3Fe2Si8O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.22

2

4.88

1.0079470

2.0158940

Oxygen

O

42.09

24

58.54

15.9994300

383.9863200

Sodium

Na

5.04

2

4.88

22.9897702

45.9795404

Magnesium

Mg

2.00

0.75

1.83

24.3050600

18.2287950

Silicon

Si

24.63

8

19.51

28.0855300

224.6842400

Iron

Fe

26.02

4.25

10.37

55.8452000

237.3421000

Anal­y­sis wt%

SiO2 : 52.41, TiO2 : 0.45, Al2O3 : 0.61, Fe2O3 : 14.37, FeO : 14.82, MnO : 1.46, MgO : 5.07, CaO : 1.33, Na2O : 4.94, K2O : 2.10, H2O : 2.12 (Ref: J.Fac.Sci.Tokyo Univ.56)

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.08-050

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

Clas­sifica­tion by Hölzel

9.DJ.220

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

Dana 8th edi­tion

66.01.03c.05

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

Neudefinition von der CNMNC anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Sodium Amphiboles  ⇒ Riebeckite (Rbk) amphiboles

Optical Properties

Color

blau, schwarz, dunkelgrün

Streak color

grünlich braun

Diaphane­ity (Trans­parency)

durchscheinend bis teilweise durchscheinend bis opak

max. Birefrin­gence

0.021

Birefringence chart\! Riebeckite title=Birefringence chart Riebeckite

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

1.663

RI value β

1.668

RI value γ / ε

1.684

Ri mean

1.672

2V angle

Biaxial (+) 65°!

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

9.78

Cell param­e­ters b (Å)

18.08

Cell param­e­ters c (Å)

5.34

Cell param­e­ters a/b or c/a

0.541

Cell param­e­ters c/b

0.295

Cell param­e­ters α

90°

Cell param­e­ters β

103.50

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

918.142

X-Ray Pow­der Diffrac­tion

8.40(100),
4.51(20),
3.27(10),
3.12(50),
2.801(20),
2.726(40),
2.602(10),
2.176(20)

XRD chart Riebeckite

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

VHN (Hard­ness Vick­ers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.4

3.3 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HF, - andere Säuren

(Co-)Type locality

(Co-)Type locality

Jemen/Adan Governement/Socotra Insel

Preface

Author (Name, Year)

Sauer, 1888

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H350: Kann Krebs erzeugen., H372: Schädigt die Organe bei längerer oder wiederholter Exposition.

References

Canadian Mineralogist 41 (2003), 1355

IMA group assignments

Varieties

Crocidolite

faserige, asbestartige Varietät von Riebeckit

Other languages

German

Riebeckit

Spanish

Riebeckita

French

Riebeckite

English

Riebeckite

Russian

Рибекит

Traditional Chinese

鈉閃石

Simplified Chinese

钠闪石

Japanese

リーベック閃石

Alternative Name

German

Abriachanit

Spanish

Abriachanita

English

Abriachanite

German

Blaueisenstein

Blue Asbestos

Blue Ironstone

Cape Blue

English

Mangancrocidolite

German

Orthoriebeckit

Spanish

Orthoriebeckita

English

Orthoriebeckite

German

Osanit

Spanish

Osanita

Osanite

German

Osannit

Spanish

Osannita

English

Osannite

Simplified Chinese

蓝石棉

CNMNC symbol

Symbol

Rbk

Rock part of

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Рибекит

Mineral Dealer

German pages

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

Locations with GPS information