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Franklinite

Pictures (34 Images total)

Franklinit
Views (File:
1274604663
): 3938
Franklinit
Größe: 10 x 9 x 7 cm, Fundort: Sterling Mine, Franklin, New Jersey, USA
Copyright: Rob Lavinsky; Contribution: thdun5
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Ogdensburg/Sterling Hill/Sterling Mine
Mineral: Franklinite
Image: 1274604663
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Franklinit

Größe: 10 x 9 x 7 cm, Fundort: Sterling Mine, Franklin, New Jersey, USA

Copyright: Rob Lavinsky
Contribution: thdun5 2010-05-23
Locality: Sterling Mine / Sterling Hill / Ogdensburg / Franklin Mining District / Sussex Co. / New Jersey / USA
Franklinit
Views (File:
1274604969
): 2057
Franklinit
Franklinit mit Calcit und Willemit. Größe: 9 x 9 x 8 cm, Fundort: Sterling Mine, Franklin, New Jersey, USA
Copyright: Rob Lavinsky; Contribution: thdun5
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Ogdensburg/Sterling Hill/Sterling Mine
Mineral: Franklinite
Image: 1274604969
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Franklinit

Franklinit mit Calcit und Willemit. Größe: 9 x 9 x 8 cm, Fundort: Sterling Mine, Franklin, New Jersey, USA

Copyright: Rob Lavinsky
Contribution: thdun5 2010-05-23
Locality: Sterling Mine / Sterling Hill / Ogdensburg / Franklin Mining District / Sussex Co. / New Jersey / USA
Franklinit
Views (File:
1289687428
): 995
Franklinit
Kantenlänge: 57 mm; Fundort: Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Copyright: Rock Currier; Contribution: Philip Blümner
Collection: National Museum of Natural History (Smithsonian Institution)
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Franklin
Mineral: Franklinite
Image: 1289687428
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Franklinit

Kantenlänge: 57 mm; Fundort: Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Collection: National Museum of Natural History (Smithsonian Institution)
Copyright: Rock Currier
Contribution: Philip Blümner 2010-11-13
Locality: Franklin / Franklin Mining District / Sussex Co. / New Jersey / USA
Franklinit in Willemit-Calcitmatrix
Views (File:
1266745692
): 3662
Franklinit in Willemit-Calcitmatrix
Größe: 50 mm; Fundort: Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Copyright: Philip Blümner; Contribution: Philip Blümner
Collection: giantcrystal
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Franklin
Mineral: Franklinite
Image: 1266745692
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Franklinit in Willemit-Calcitmatrix

Größe: 50 mm; Fundort: Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Collection: giantcrystal
Copyright: Philip Blümner
Contribution: Philip Blümner 2010-02-21
Locality: Franklin / Franklin Mining District / Sussex Co. / New Jersey / USA
Franklinit
Views (File:
1274604865
): 3831
Franklinit
Größe: 5 x 4,8 x 3,5 cm, Fundort: Sterling Mine, Franklin, New Jersey, USA
Copyright: Rob Lavinsky; Contribution: thdun5
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Ogdensburg/Sterling Hill/Sterling Mine
Mineral: Franklinite
Image: 1274604865
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Franklinit

Größe: 5 x 4,8 x 3,5 cm, Fundort: Sterling Mine, Franklin, New Jersey, USA

Copyright: Rob Lavinsky
Contribution: thdun5 2010-05-23
Locality: Sterling Mine / Sterling Hill / Ogdensburg / Franklin Mining District / Sussex Co. / New Jersey / USA

You find additional specimen at the Geolitho Museum

Collectors Summary

Color grauschwarz bis schwarz, mit dunkelrot internen Reflektionen
Streak color rötlichbraun
Hardness (Mohs) 6.25
Solubility + Säuren!, - kalte Zitronensäure
Crystal System kubisch, Fd3m
Morphology Oktaeder (-ähnliche) Formen, rundliche Körner

Chemism

Chemical formula

(Zn,Mn2+,Fe2+)(Fe3+,Mn3+)2O4

Chemical composition

Eisen, Mangan, Zink, Sauerstoff

Unit weight: 236.54611992 u; Number of atoms in the formula: 7

Info

Empirical formula:

(Zn0.6Mn0.3Fe0.1)(Fe0.75Mn0.25)2O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

27.06

4

57.14

15.9994300

63.9977200

Manganese

Mn

18.58

0.8

11.43

54.9380499

43.9504399

Iron

Fe

37.77

1.6

22.86

55.8452000

89.3523200

Zinc

Zn

16.59

0.6

8.57

65.4094000

39.2456400

Analysis wt%

MnO : 16.37, ZnO : 15.91, Fe2O3 : 56.57, Mn2O3 : 10.52 (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.02-060

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

Classification by Hölzel

4.BB.110

4: OXIDES
B: Spinels R3O4
B: Fe-Spinels

Dana 8th edition

07.02.02.04

07: Multiple Oxides
02: Multiple Oxides (A+ B++)2 X4 Spinel group
02: (Iron 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

grauschwarz bis schwarz, mit dunkelrot internen Reflektionen

Streak color

rötlichbraun

Diaphaneity (Transparency)

opak

RI value α / ω / n

2.36

Ri mean

2.36

2V angle

Isotropisch

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Image ⇒ Luminescence ⇒ excitation ⇒ UV shortwave ~254nm (1 Images total)

Willemit
Views (File:
1401392832
): 1031
Willemit
Deckungsgleiche Aufnahmen, grünliche Einschlüsse in Calcit mit Franklinit, das UV-Bild (254nm) zeigt eine grüne Fluoreszenz für Willemit und eine rote Fluoreszenz für Calcit; BB = 20 mm. Fundort: Franklin, Franklin Mining District, Sussex Co., New Jersey, USA.
Copyright: Bebo; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: B002677
Location: USA/New Jersey/Sussex Co./Franklin Mining District/Franklin
Mineral: Calcite, Franklinite, Willemite
Image: 1401392832
License: Usage for Mineralienatlas project only
Willemit (SNr: B002677)

Deckungsgleiche Aufnahmen, grünliche Einschlüsse in Calcit mit Franklinit, das UV-Bild (254nm) zeigt eine grüne Fluoreszenz für Willemit und eine rote Fluoreszenz für Calcit; BB = 20 mm. Fundort: F...

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2014-05-29
Locality: Franklin / Franklin Mining District / Sussex Co. / New Jersey / USA

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

8.474

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)

608.507

X-Ray Powder Diffraction

2.99(70),
2.55(100),
2.12(40),
1.73(30),
1.632(70),
1.499(80),
1.104(50),
0.978(50)

XRD chart Franklinite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphology

Oktaeder (-ähnliche) Formen, rundliche Körner

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

6.25

VHN (Hardness Vickers)

867 (100g)

Density (g/cm³)

5.07 - 5.22 / Durchschnittlich = 5.14

5.164 ( ρ calc. Mineralienatlas )

Radioactivity

keine bekannt

Instability

+ Säuren!, - kalte Zitronensäure

Preface

Associations

Calcit, Willemit

Author (Name, Year)

Berthier, 1819

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 211

IMA group assignments

Other languages

German

Franklinit

Spanish

Franklinita

English

Franklinite

French

Franklinite

Russian

Франклинит

Simplified Chinese

锌铁尖晶石

Japanese

フランクリン鉄鉱

Alternative Name

French

Ferrite de Zinc

German

Fracklinit

Spanish

Fracklinita

Francklinite

Isophane

Magnofranklinite

Italian

Zinkoferrita

Zinkoferrite

Simplified Chinese

锌铁矿

CNMNC symbol

Symbol

Frk

Locations with GPS information

IDs

GUSID (Global unique identifier short form) yjb0JSJjuUGYp4qO1IaC_A
GUID (Global unique identifier) 25F436CA-6322-41B9-98A7-8A8ED48682FC
Database ID 1283