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Fayalite (Fayalit)

Pictures (71 Images total)

Fayalit
Views (Image: 1256285760): 10519
Fayalit

Größe: 1,27 mm; Fundort: Nickenicher Sattel, Nickenich, Eifel, Rheinland-Pfalz, Deutschland

Copyright: Matteo Chinellato
Contribution: Hg 2009-10-23
Locality: Nickenicher Sattel (Eicher Sattel) / Nickenich / Pellenz, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Fayalit
Views (Image: 1269517859): 11034
Fayalit

Größe: 1,52 mm; Fundort: Ettringer Bellerberg, Ettringen, Eifel, Deutschland

Copyright: Matteo Chinellato
Contribution: Hg 2010-03-25
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Fayalit
Views (Image: 1360264288): 5149
Fayalit

Bildbreite: 2,2 mm, Fundort: Coso Hot Springs, Coso District, Coso Mts, Inyo Co., Kalifornien, USA

Copyright: Joachim Esche
Contribution: thdun5 2013-02-07
Locality: Coso Hot Springs / China Lake Naval Ordnance Test Station / Coso District / Coso Mts / Inyo Co. / Kalifornien (California) / USA
Fayalit
Views (Image: 1310650751): 6854, Rating: 9.22
Fayalit

Größe: 0,98 mm; Fundort: Coso Hot Springs, Coso District, Coso Mts, Inyo Co., Kalifornien (California), USA

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2011-07-14
Locality: Coso Hot Springs / China Lake Naval Ordnance Test Station / Coso District / Coso Mts / Inyo Co. / Kalifornien (California) / USA
Fayalit
Views (Image: 1303150554): 5881, Rating: 8.57
Fayalit (SNr: A022408)

Braune blockige Kristall, BB = 8,5 mm. Fundort: Gottesbelohnung, Hettstedt, Mansfelder Land, Sachsen-Anhalt, Deutschland.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2011-04-18
Locality: Kupfer-Silberhütte (Gottesbelohnung) / Hettstedt / Mansfeld-Südharz, Landkreis / Sachsen-Anhalt / Deutschland
Fayalit
Views (Image: 1255590254): 2110
Fayalit

Größe: 1,89 mm; Fundort: Ettringer Bellerberg, Ettringen, Eifel, Deutschland

Copyright: Matteo Chinellato
Contribution: Hg 2009-10-15
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

Collectors Summary

Color braun, schwarz, schwarz
Streak color weiß
Hardness (Mohs) 7
Solubility +++ Säuren
Crystal System orthorhombisch, Pbnm

Chemism

Chem­ical formula

Fe22+SiO4

Chem­ical com­po­si­tion

Eisen, Silicium, Sauerstoff

Unit weight: 203.77365 u; Number of atoms in the formula: 7

Info

Empirical formula:

Fe2SiO4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

31.41

4

57.14

15.9994300

63.9977200

Silicon

Si

13.78

1

14.29

28.0855300

28.0855300

Iron

Fe

54.81

2

28.57

55.8452000

111.6904000

Anal­y­sis wt%

SiO2 : 29.36, FeO : 64.12, MnO : 5.33, MgO : 0.71, Na2O : 0.45 (Ref: Mineralogical Magazine 89)

Strunz 9th edi­tion incl. updates

9.AC.05

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
C: Insel(Neso)silikate ohne weitere Anionen; Kationen in oktahedraler [6] Koordination
05:Olivin-Gruppe

Lapis Clas­sifica­tion

VIII/A.04-020

VIII: SILIKATE
A: Inselsilikate mit [SiO4] 4--Baugruppen
4: Kationen in oktaedrischer Koordination [6]; Olivin-Gruppe

Clas­sifica­tion by Hölzel

9.AB.120

9: SILICATES
A: Nesosilicates
B: Olivine-Group

Dana 8th edi­tion

51.03.01.01

51: Nesosilicate Minerals
03: Nesosilicates Nesosilicate Insular SiO4 Groups Only with all cations in octahedral [6] coordination
01: Olivine group

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Olivine group

Optical Properties

Color

braun, schwarz, schwarz

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

max. Birefrin­gence

0.052

Birefringence chart\! Fayalite title=Birefringence chart Fayalite

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

1.827

RI value β

1.869

RI value γ / ε

1.879

Ri mean

1.858

2V angle

Biaxial (-) 53°

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pbnm

Cell param­e­ters a (Å)

4.817

Cell param­e­ters b (Å)

10.477

Cell param­e­ters c (Å)

6.105

Cell param­e­ters a/b or c/a

0.460

Cell param­e­ters c/b

0.583

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

308.105

X-Ray Pow­der Diffrac­tion

3.555(70),
2.829(100),
2.620(20),
2.565(60),
2.500(80),
2.408(30),
2.350(20),
2.305(30)

XRD chart Fayalite

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)

7

VHN (Hard­ness Vick­ers)

1300 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.39

4.393 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ Säuren

Preface

Author (Name, Year)

Gmelin, 1840

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 234

IMA group assignments

 
Mg1.6Fe2+0.4(SiO4)
orthorhombisch
 

 
 
Ca2SiO4
orthorhombisch
Pnma

 
 
Fe22+SiO4
orthorhombisch
Pbnm

 
 
Mg2SiO4
orthorhombisch
Pbnm

 
 
CaMgSiO4
orthorhombisch
Pbnm

 
 
Mn2SiO4
orthorhombisch
Pbnm

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Actuality: 20. May 2022 - 17:59:11

Other languages

Portuguese

Faialite

Polish

Fajalit

Lithuanian

Fajalitas

Dutch

Fayaliet

German

Fayalit

Spanish

Fayalita

English

Fayalite

French

Fayalite

Russian

Фаялит

Japanese

鉄橄欖石

Simplified Chinese

铁橄榄石

Simplified Chinese

锰铁橄榄石

Alternative Name

German

Eisenglas

German

Eisenperidot

German

Faialit

Spanish

Faialita

Fayalith

English

Hortonolite

Iron-Chrysolite

English

Roepperite

CNMNC symbol

Symbol

Fa

Rock part of

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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: 20. May 2022 - 17:59:12

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Фаялит

Mineral Dealer

German pages

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Crystal-Treasure.com - search for: Fayalit
Bosse - search for: Fayalit
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Locations with GPS information