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Scheteligite (Scheteligit)

Collectors Summary

Color schwarz-met.
Streak color gelblichgrau
Hardness (Mohs) 5.5
Cleavages fehlt
Solubility +++ HF, - Säuren

Chemism

Chemical formula

(Ca,Y,Sb,Mn)2(Ti,Ta,Nb,W)2O6(O,OH)

Chemical composition

Antimon, Calcium, Mangan, Niob, Tantal, Titan, Yttrium, Sauerstoff, Wasserstoff, Wolfram

Unit weight: 437.71150534 u; Number of atoms in the formula: 11.25

Info

Empirical formula:

(Ca0.55Y0.3Sb0.1Mn0.05)2(Ti0.55Ta0.3Nb0.1W0.05)2O6(O0.75(OH)0.25)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.06

0.25

2.22

1.0079470

0.2519868
Oxygen

O

25.59

7

62.22

15.9994300

111.9960100
Calcium

Ca

10.07

1.1

9.78

40.0784000

44.0862400
Titanium

Ti

12.03

1.1

9.78

47.8671000

52.6538100
Manganese

Mn

1.26

0.1

0.89

54.9380499

5.4938050
Yttrium

Y

12.19

0.6

5.33

88.9058520

53.3435112
Niobium

Nb

4.25

0.2

1.78

92.9063820

18.5812764
Antimony

Sb

5.56

0.2

1.78

121.7601000

24.3520200
Tantalum

Ta

24.80

0.6

5.33

180.9479100

108.5687460
Tungsten

W

4.20

0.1

0.89

183.8410000

18.3841000

Lapis Classification

IV/C.15-020

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)
15: Pyrochlor-Gruppe; MIKROLITH-Untergruppe [Ta ± Nb]

Classification by Hölzel

4.CJ.121

4: OXIDES
C: R2O3 Sesquioxides
J: Betafite-Group, Ti-dominant on the B-site

IMA status

Diskreditiert von der CNMNC

Optical Properties

Color

schwarz-met.

Streak color

gelblichgrau

2V angle

Isotropisch

Crystallography

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Physical Properties

Hardness (Mohs)

5.5

Density (g/cm³)

4.74 (gemessen)

Cleavages

fehlt

Instability

+++ HF, - Säuren

Preface

Author (Name, Year)

Bjørlykke, 1937

References

American Mineralogist 62 (1977), 403

Other languages

German

Scheteligit

English

Scheteligite

French

Scheteligite

Spanish

Schlegelita

Alternative Name

Spanish

Scheteligita