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Qandilite (Qandilit)

Additional Functions

Collectors Summary

Color hellgrau mit einem blassrosa Farbton
Streak color schwarz
Hardness (Mohs) 6.5
Solubility +++ heiße HCl, ++ heiße H2SO4, heiße HNO3
Crystal System kubisch, Fd3m

Chemism

Chemical formula

(Mg,Fe2+)2(Ti,Fe3+,Al)O4

Chemical composition

Aluminium, Eisen, Magnesium, Titan, Sauerstoff

Unit weight: 176.54988382 u; Number of atoms in the formula: 7

Info

Empirical formula:

(Mg0.75Fe0.25)2(Ti0.6Fe0.3Al0.1)O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

36.25

4

57.14

15.9994300

63.9977200
Magnesium

Mg

20.65

1.5

21.43

24.3050600

36.4575900
Aluminium

Al

1.53

0.1

1.43

26.9815382

2.6981538
Titanium

Ti

16.27

0.6

8.57

47.8671000

28.7202600
Iron

Fe

25.31

0.8

11.43

55.8452000

44.6761600

Analysis wt%

Ø TiO2 : 26.41, Al2O3 : 4.83, MnO : 0.76, MgO : 29.62, Fe2O3 : 28.27, FeO : 10.32 (Ref: Mineralogical Magazine 85)

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.04-030

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

Classification by Hölzel

4.BD.160

4: OXIDES
B: Spinels R3O4
D: V,Ti,Ge-Spinels

Dana 8th edition

07.02.05.01

07: Multiple Oxides
02: Multiple Oxides (A+ B++)2 X4 Spinel group
05: (Titanium subgroup)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Spinel supergroup  ⇒ Oxyspinel group  ⇒ Ulvöspinel subgroup

Optical Properties

Color

hellgrau mit einem blassrosa Farbton

Streak color

schwarz

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

8.403

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

Volumne (ų)

593.339

X-Ray Powder Diffraction

2.971(30),
2.533(100),
2.101(40),
1.617(50),
1.486(60),
1.281(20),
1.094(30),
0.970(20)
XRD chart Qandilite

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)

6.5

VHN (Hardness Vickers)

998 (100g)

Density (g/cm³)

4.03

3.953 ( ρ calc. Mineralienatlas )

Instability

+++ heiße HCl, ++ heiße H2SO4, heiße HNO3

(Co-)Type locality

(Co-)Type locality

Irak/Kurdistan, Autonome Region/Qala-Dizeh/Hero/Dupezeh-Gebirge

Preface

Author (Name, Year)

Al-Hermezi, 1985

References

Mineralogical Magazine 49 (1985), 739

IMA group assignments

Other languages

German

Qandilit

Spanish

Qandilita

English

Qandilite

French

Qandilite

Russian

Кандилит

Japanese

ｶﾝﾃﾞｨﾗｲﾄ

CNMNC (IMA)-Number

IMA 1980-046

CNMNC symbol

Symbol

Qnd