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Hercynite

Pictures (22 Images total)

Hercynit
Views (File:
1165088773
): 5318, Rating: 9.63
Hercynit
Bildbreite: 3 mm; Fundort Vulkangebiet Laacher See, Eifel, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Ahrweiler, Landkreis/Brohltal, Verbandsgemeinde/Laacher See
Mineral: Hercynite
Image: 1165088773
Rating: 9.63 (votes: 8)
License: Usage for Mineralienatlas project only
Hercynit

Bildbreite: 3 mm; Fundort Vulkangebiet Laacher See, Eifel, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-02
Locality: Laacher See / Brohltal, Verbandsgemeinde / Ahrweiler, Landkreis / Rheinland-Pfalz / Deutschland
Hercynit
Views (File:
1185732554
): 6900, Rating: 9.45
Hercynit
Fundort: In den Dellen, Mendig, Laacher See, Eifel, Rheinland-Pfalz, Deutschland; Bildbreite: 3,5 mm
Copyright: Fred Kruijen; Contribution: Fred Kruijen
Collection: Willi Schüller, Adenau
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mendig, Verbandsgemeinde/In den Dellen (Grube Zieglowski)
Mineral: Hercynite
Image: 1185732554
Rating: 9.45 (votes: 11)
License: Usage for Mineralienatlas project only
Hercynit

Fundort: In den Dellen, Mendig, Laacher See, Eifel, Rheinland-Pfalz, Deutschland; Bildbreite: 3,5 mm
Collection: Willi Schüller, Adenau
Copyright: Fred Kruijen
Contribution: Fred Kruijen 2007-07-29
Locality: In den Dellen (Grube Zieglowski) / Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Hercynit
Views (File:
1180811505
): 5312, Rating: 9.4
Hercynit
Laacher See-Vulkangebiet, Eifel, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Ahrweiler, Landkreis/Brohltal, Verbandsgemeinde/Laacher See
Mineral: Hercynite
Image: 1180811505
Rating: 9.4 (votes: 5)
License: Usage for Mineralienatlas project only
Hercynit

Laacher See-Vulkangebiet, Eifel, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2007-06-02
Locality: Laacher See / Brohltal, Verbandsgemeinde / Ahrweiler, Landkreis / Rheinland-Pfalz / Deutschland
Hercynit
Views (File:
1204654663
): 3613, Rating: 8.6
Hercynit
ein Eigenfund an der Dunilitfundstelle, Größe 5 mm.Fundort: Katukubura,, Sri Lanka
Copyright: Heinz Dieter Müller (Dieter1); Contribution: Dieter1
Collection: Heinz Dieter Müller (Dieter1)
Location: Sri Lanka/Uva, Provinz/Kolonne/Katukubura
Mineral: Hercynite
Encyclopedia: Sri Lanka
Image: 1204654663
Rating: 8.6 (votes: 5)
License: Usage for Mineralienatlas project only
Hercynit

ein Eigenfund an der Dunilitfundstelle, Größe 5 mm.Fundort: Katukubura,, Sri Lanka

Collection: Heinz Dieter Müller (Dieter1)
Copyright: Heinz Dieter Müller (Dieter1)
Contribution: Dieter1 2008-03-04
Locality: Katukubura / Kolonne / Uva, Provinz / Sri Lanka
Hercynit
Views (File:
1180811485
): 4344
Hercynit
Fundort: Laacher See-Vulkangebiet, Eifel, Deutschland; Bildbreite: 3 mm
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mendig, Verbandsgemeinde
Mineral: Hercynite
Image: 1180811485
Rating: 8.67 (votes: 3)
License: Usage for Mineralienatlas project only
Hercynit

Fundort: Laacher See-Vulkangebiet, Eifel, Deutschland; Bildbreite: 3 mm
Copyright: Stephan Wolfsried
Contribution: Hg 2007-06-02
Locality: Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color schwarz
Streak color dunkelgrün
Hardness (Mohs) 7.50 - 8.00
Crystal System kubisch, Fd3m

Chemism

Chemical formula

Fe2+Al2O4

Chemical composition

Aluminium, Eisen, Sauerstoff

Unit weight: 173.8059964 u; Number of atoms in the formula: 7

Info

Empirical formula:

FeAl2O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

36.82

4

57.14

15.9994300

63.9977200
Aluminium

Al

31.05

2

28.57

26.9815382

53.9630764
Iron

Fe

32.13

1

14.29

55.8452000

55.8452000

Analysis wt%

MgO : 9.37, FeO : 24.00, Al2O3 : 60.84, Fe2O3 : 4.26, SiO2 : 0.77, TiO2 : 0.50 (Ref: Dana, 7th ed. 1)

Strunz 9th edition incl. updates

4.BB.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
B: Metall: Sauerstoff = 3:4 und vergleichbare
B: Mit ausschließlich mittelgroßen [Kationen]
05:Spinel-Gruppe

Lapis Classification

IV/B.01-020

IV: OXIDE
B: Oxide mit Verhältnis Metall zu Sauerstoff = 3:4 (Spinelltyp M3O4 und verwandte Verbindungen)
1: Spinell-Gruppe; Aluminat-Spinelle

Classification by Hölzel

4.BA.150

4: OXIDES
B: Spinels R3O4
A: Al-Spinels

Dana 8th edition

07.02.01.03

07: Multiple Oxides
02: Multiple Oxides (A+ B++)2 X4 Spinel group
01: (Aluminum subgroup)

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Spinel supergroup  ⇒ Oxyspinel group  ⇒ Spinel subgroup

Optical Properties

Color

schwarz

Streak color

dunkelgrün

RI value α / ω / n

1.83

Ri mean

1.83

2V angle

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

8.156

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volume (ų)

542.54

X-Ray Powder Diffraction

2.883(60),
2.460(100),
2.038(20),
1.665(20),
1.569(40),
1.441(40),
1.061(10),
0.832(10)
XRD chart Hercynite

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)

7.50 - 8.00

VHN (Hardness Vickers)

1504 (100g)

Density (g/cm³)

4.323 (berechnet)

4.255 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Tschechien/Pilsen (Plzeňský kraj)/Taus (Domažlice), Bezirk/Ronsperg (Pobezovice)

Preface

Name from

Benannt nach dem lateinischen Wort für Böhmer Wald (Silva Hercynia), wo das Mineral erstmals entdeckt wurde.

Author (Name, Year)

Zippe, 1847

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 243

Palache, Charles, Harry Berman & Clifford Frondel - The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume I (1944), 689-697.

Neues Jahrbuch für Mineralogie, Abhandlungen 115, 120-122.

European Journal of Mineralogy 6, 39-51.

Andreozzi, G.B. and Lucchesi, S. - Intersite distribution of Fe 2+ and Mg in the spinel (sensu-stricto)-hercynite series by single-crystal X-ray diffraction. American Mineralogist 87 (2002), 1113-1120

IMA group assignments

Other languages

German

Hercynit

Spanish

Hercynita

French

Hercynite

English

Hercynite

Russian

Герцинит

Japanese

鉄ｽﾋﾟﾈﾙ

Simplified Chinese

铁尖晶石

Alternative Name

German

Chrysomelan

Chrysomelane

Hercynite (of Zippe)

Iron Spinel

Iron-magnesia Spinel

CNMNC symbol

Symbol

Hc

Rock part of

Locations with GPS information

IDs

GUSID (Global unique identifier short form) apX05X4ZYkuvF8rbOwy4TQ
GUID (Global unique identifier) E5F4956A-197E-4B62-AF17-CADB3B0CB84D
Database ID 1573