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Fayalite (Fayalit)

Pictures (79 Images total)

Fayalit
Views (File:
1256285760
): 11729
Fayalit
Größe: 1,27 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: Fayalite
Image: 1256285760
Rating: 9.5 (votes: 2)
License: Usage for Mineralienatlas project only
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 (File:
1360264288
): 6301
Fayalit
Bildbreite: 2,2 mm, Fundort: Coso Hot Springs, Coso District, Coso Mts, Inyo Co., Kalifornien, USA
Copyright: Joachim Esche; Contribution: thdun5
Location: USA/Kalifornien (California)/Inyo Co./Coso Mts/Coso District/China Lake Naval Ordnance Test Station/Coso Hot Springs
Mineral: Fayalite
Image: 1360264288
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
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 (File:
1310650751
): 7907, Rating: 9.22
Fayalit
Größe: 0,98 mm; Fundort: Coso Hot Springs, Coso District, Coso Mts, Inyo Co., Kalifornien (California), USA
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: USA/Kalifornien (California)/Inyo Co./Coso Mts/Coso District/China Lake Naval Ordnance Test Station/Coso Hot Springs
Mineral: Fayalite
Image: 1310650751
Rating: 9.22 (votes: 9)
License: Usage for Mineralienatlas project only
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 (File:
1303150554
): 6192, Rating: 8.57
Fayalit
Braune blockige Kristall, BB = 8,5 mm. Fundort: Gottesbelohnung, Hettstedt, Mansfelder Land, Sachsen-Anhalt, Deutschland.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A022408, Donator: Peter Köhlen
Location: Deutschland/Sachsen-Anhalt/Mansfeld-Südharz, Landkreis/Hettstedt/Kupfer-Silberhütte (Gottesbelohnung)
Mineral: Fayalite
Encyclopedia: Sammlung/Lithothek der Münchener Micromounter
Image: 1303150554
Rating: 8.57 (votes: 7)
License: Usage for Mineralienatlas project only
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 (File:
1255590254
): 2307
Fayalit
Größe: 1,89 mm; Fundort: Ettringer Bellerberg, Ettringen, Eifel, Deutschland
Copyright: Matteo Chinellato; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Vordereifel, Verbandsgemeinde/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Fayalite
Image: 1255590254
Rating: 8.67 (votes: 3)
License: Usage for Mineralienatlas project only
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 / Vordereifel, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Fayalit
Views (File:
1185794409
): 2530
Fayalit
Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland; Bildbreite: 2,2 mm.
Copyright: Fred Kruijen; Contribution: Fred Kruijen
Collection: Willi Schüller, Adenau
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Vordereifel, Verbandsgemeinde/Ettringen/Bellerberg/Ettringer Bellerberg (Stbr. Caspar)
Mineral: Fayalite
Image: 1185794409
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Fayalit

Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland; Bildbreite: 2,2 mm.
Collection: Willi Schüller, Adenau
Copyright: Fred Kruijen
Contribution: Fred Kruijen 2007-07-30
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Vordereifel, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

You find additional specimen at the Geolitho Museum

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

Volume (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

(Co-)Type locality

(Co-)Type locality

Portugal/Azoren (Ilhas dos Açores), Autonome Region/Faial (Fayal), Insel

Preface

Author (Name, Year)

Gmelin, 1840

References

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

IMA group assignments

 
Olivine group
Mg1.6Fe2+0.4(SiO4)
orthorhombisch
 

 
 
Calcio-olivine
Ca2SiO4
orthorhombisch
Pnma

 
 
Fayalite
Fe22+SiO4
orthorhombisch
Pbnm

 
 
Forsterite
Mg2SiO4
orthorhombisch
Pbnm

 
 
Monticellite
CaMgSiO4
orthorhombisch
Pbnm

 
 
Tephroite
Mn2SiO4
orthorhombisch
Pbnm

Refresh list

Actuality: 05. Dec 2023 - 08:36:15

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

 
Rocks

 
 
igneous rocks and sediments

 
 
 
crystalline igneous rocks

 
 
 
 
normal crystalline rocks

 
 
 
 
 
fine-grained crystalline rocks

 
 
 
 
 
 
trachytic-rock

 
 
 
 
 
 
 
trachyte  

Refresh list | View legend

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: 05. Dec 2023 - 08:36:15

Locations with GPS information

IDs

GUSID (Global unique identifier short form) PHeFgwjtC0y4FXXh29YJRQ
GUID (Global unique identifier) 8385773C-ED08-4C0B-B815-75E1DBD60945
Database ID 1104