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Warkite

Collectors Summary

Crystal System triklin, P1

Chemism

Chemical formula

Ca2Sc6Al6O20

Chemical composition

Aluminium, Calcium, Scandium, Sauerstoff

Unit weight: 831.770094 u; Number of atoms in the formula: 34

Info

Empirical formula:

Ca2Sc6Al6O20

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

38.47

20

58.82

15.9994300

319.9886000

Aluminium

Al

19.46

6

17.65

26.9815382

161.8892292

Calcium

Ca

9.64

2

5.88

40.0784000

80.1568000

Scandium

Sc

32.43

6

17.65

44.9559108

269.7354648

Strunz 9th edition incl. updates

9

9: Silikate (Germanate)
9:
9:

Lapis Classification

VIII/F.14-054

VIII: SILIKATE
F: Ketten- und Bandsilikate
14: Verzweigte Kettenstrukturen; Aenigmatit-Gruppe

IMA status

anerkannt - CNMNC Newsletter No. 20, June 2014, page 552

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Sapphirine supergroup  ⇒ Rhönite group

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

10.367

Cell parameters b (Å)

10.756

Cell parameters c (Å)

8.895

Cell parameters a/b or c/a

0.964

Cell parameters c/b

0.827

Cell parameters α

105.98

Cell parameters β

96.04

Cell parameters γ

124.72

Volume (ų)

739.406

X-Ray Powder Diffraction

8.067(53), 8.063(51), 4.802(55), 2.684(74), 2.684(72), 2.544(100), 2.541(78), 2.540(77)

XRD chart Warkite

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

(Co-)Type locality

(Co-)Type locality

Australien/Victoria/Shepparton/Murchison/Murchison-Meteorit

Type material

Field Museum, Chicago, Illinois, USA

Smithsonian Institution’s National Museum of Natural History, Washington DC, USA

Collection number of type material

USNM 7618 (Washington)

Preface

Author (Name, Year)

Chi Ma, Alexander N. Krot, Kazuhide Nagashima und Oliver Tschauner (2014)

References

Ma, C., Krot, A.N., Nagashima, K. and Tschauner, O. (2014) Warkite, IMA 2013- 129. CNMNC Newsletter No. 20, June 2014, page 552; Mineralogical Magazine, 78, 549-558

IMA group assignments

Other languages

German

Warkit

English

Warkite

Simplified Chinese

钙钪铝石

CNMNC (IMA)-Number

IMA 2013-129

CNMNC symbol

Symbol

Wki

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Gri6OvpDXUOvavpV-erG_w
GUID (Global unique identifier) 3ABAB81A-43FA-435D-AF6A-FA55F9EAC6FF
Database ID 7743



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