'._('einklappen').'
 

Jedwabite

Additional Functions

Collectors Summary

Color graugelb, grauweiß in reflektiertem Licht
Lustre Metallglanz
Hardness (Mohs) 6.5
Cleavages nicht beobachtet
Fracture uneben
Crystal System hexagonal, P63mc, P62c, P63/mmc

Chemism

Chem­ical formula

Fe7(Ta,Nb)3

Chem­ical com­po­si­tion

Eisen, Niob, Tantal

Unit weight: 867.728984 u; Number of atoms in the formula: 10

Info

Empirical formula:

Fe7(Ta0.75Nb0.25)3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Iron

Fe

45.05

7

70.00

55.8452000

390.9164000

Niobium

Nb

8.03

0.75

7.50

92.9063820

69.6797865

Tantalum

Ta

46.92

2.25

22.50

180.9479100

407.1327975

Anal­y­sis wt%

Ø Ta : 35.33, Nb : 13.05, Fe : 44.40, Mn : 0.60, Sn : 2.06, W : 3.07, Si : 1.54 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 97)

Strunz 9th edi­tion incl. updates

1.AE.25

1: Elemente (Metalle, intermetallische Legierungen, Metalloide u. Nichtmetalle, Carbide, Silicide, Nitride u. Phosphide)
A: Metalle und intermetallische Legierungen
E: Eisen-Chrom-Familie
25:Jedwabit-Gruppe

Lapis Clas­sifica­tion

I/A.08-050

I: ELEMENTE
A: Metalle und intermetallische Verbindungen

Clas­sifica­tion by Hölzel

1.AF.400

1: ELEMENTS
A: Metals, Intermetallic Compounds, and Alloys
F: Fe-Cr-Group
4: hexagonal with Nb, Ta

Dana 8th edi­tion

01.01.34.01

01: Native Elements and Alloys
01: Native Elements with metallic elements other than the platinum group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

graugelb, grauweiß in reflektiertem Licht

Lus­tre

Metallglanz

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6mm, 6m2, 6/mmm

Space Group number

186, 190, 194

Space Group

P63mc, P62c, P63/mmc

Cell param­e­ters a (Å)

4.81

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

7.87

Cell param­e­ters a/b or c/a

1.636

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

1

Volumne (ų)

157.687

X-Ray Pow­der Diffrac­tion

2.40(3),
2.19(7),
2.11(3),
2.05(10),
2.01(6),
1.509(5),
1.347(8),
1.314(4)

XRD chart Jedwabite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

6.5

VHN (Hard­ness Vick­ers)

1050 (50g)

Density (g/cm³)

8.91 (berechnet)

9.137 ( ρ calc. Mineralienatlas )

Cleav­ages

nicht beobachtet

Frac­ture

uneben

Tenac­ity

spröde

Preface

Name from

Jacques Jedwab, Université Libre de Bruxelles, Belgien

Author (Name, Year)

Novgorodova & Generalov & Trubkin, 1997

References

Mineralogical Record 29, 472.

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 126 (1997) (2), 100.

American Mineralogist 83 (1998), 654 (Zusammenfassung).

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Jedwabite

Fe7(Ta,Nb)3

hexagonal : 6mm, 6m2, 6/mmm : P63mc, P62c, P63/mmc

1.AE.25

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Nickel

Ni

kubisch : m3m : Fm3m

I/A.08-010

Taenite

(Ni,Fe)

kubisch : m3m : Fm3m

I/A.08-020

Tetrataenite

FeNi

monoklin : m : Pm

I/A.08-030

Awaruite

Ni3Fe

kubisch : m3m : Pm3m

I/A.08-040

Nisnite

Ni3Sn

kubisch : m3m : Pm3m

I/A.08-045

Jedwabite

Fe7(Ta,Nb)3

hexagonal : 6mm, 6m2, 6/mmm : P63mc, P62c, P63/mmc

I/A.08-050

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Jedwabite

Fe7(Ta,Nb)3

hexagonal : 6mm, 6m2, 6/mmm : P63mc, P62c, P63/mmc

1.AF.400

Titanium

Ti

hexagonal : 6/mmm : P63/mmc

1.AF.440

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Mavlyanovite

Mn5Si3

hexagonal : 6/mmm : P63/mcm

01.01.33.13

Jedwabite

Fe7(Ta,Nb)3

hexagonal : 6mm, 6m2, 6/mmm : P63mc, P62c, P63/mmc

01.01.34.01

Alternative Name

German

Jedvabit

Spanish

Jedvabita

Jedvabite

IMA Number

IMA 1995-043

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

German pages

DeWikiPedia - search for: Jedwabit
Google-Bilder-Suche - search for: Jedwabit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Jedwabit

English pages

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

Russian pages

Webmineral.ru - search for: Жедвабит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Jedwabit
Crystal-Treasure.com - search for: Jedwabit
Bosse - search for: Jedwabit