Qandilite Mineral Data

General Qandilite Information

Chemical Formula:

(Mg,Fe++)2(Ti,Fe+++,Al)O4

Composition:

Molecular Weight = 179.98 gm

Magnesium 17.56 % Mg 29.11 % MgO

Titanium 15.96 % Ti 26.63 % TiO₂

Aluminum 3.00 % Al 5.67 % Al₂O₃

Iron 27.93 % Fe 11.98 % FeO / 26.62 % Fe₂O₃

Oxygen 35.56 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg_1.3Fe³⁺_0.4Fe²⁺_0.3Ti_0.6Fe³⁺_0.2Al_0.2O₄

Environment:

In a fosterite skarn.

IMA Status:

Approved IMA 1985

Locality:

Dupezeh Mountain, hear Hero Town, Qala-Dizeh, Iraq. Link to MinDat.org Location Data.

Name Origin:

Named for its occurrence in rocks of the Quadil Group, Iraq.

Name Pronunciation:

Qandilite + Pronunciation

Synonym:

ICSD 65792

PDF 25-1157

Qandilite Image

Images:

Qandilite

Comments: Small black grains of qandilite in a forsterite skarn rock matrix.
Location: Dupezeh Mt., Hero, Qala-Diz (Qala-Dizeh; Qala-Diza), Iraq. Scale: Picture Size 0.5 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Qandilite

Comments: B&W photograph in plane-polarized light showing rounded fractured serpentinized olivine surrounded by the interstitial calcite (C), qandilite (Q), perovskite (P), and altered Mg,Al-spinel (Sp). (MinMag, v49:739).
Location: Forsterite-rich rock in contact with a kaersutite-rich banded diorite from the Qala-Dizeh region, NE Iraq. Scale: See Image.
© Mineralogical Magazine

Qandilite Crystallography

Cell Dimensions:

a = 8.4033, Z = 8; V = 593.40 Den(Calc)= 4.03

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.53(1), 1.486(0.6), 1.617(0.5),

Crystal Structure:

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Millard R L , Peterson R C , Hunter B K , American Mineralogist , 80 (1995) p.885-896, Study of the cubic to tetragonal transition in Mg2TiO4 and Zn2TiO4 spinels by, 17O MAS NMR and Rietveld refinement of X-ray diffraction data, Sample: RLM445, 1405 C, Mg2TiO4

View Additional jPOWD Structure files for Qandilite
[1] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [2] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [3] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [4] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [5] [50] [51] [52] [53] [54] [6] [7] [8] [9]

Physical Properties of Qandilite

Cleavage:

{111} Perfect, {111} Perfect, {111} Perfect

Color:

Black.

Density:

4.03

Diaphaneity:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Octahedral Crystals - Occurs as octahedral shaped crystals.

Hardness:

7 - Quartz

Luster:

Metallic

Magnetism:

Strongly magnetic

Streak:

black

Optical Properties of Qandilite

Optical Data:

Isotropic.

NCalc= 2.13 - from Gladstone-Dale relationship (KC = 0.281) where Ncalc=Dcalc*KC+1
NCalc= 2.13 - from Gladstone-Dale relationship (KC = 0.281) where Ncalc=Dmeas*KC+1

RL Color:

Light gray with a pinkish tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Qandilite in Air**
λ	R	∑ R(λ)
400 nm	14.80
420 nm	14.20
440 nm	13.80
460 nm	13.50
480 nm	13.30
500 nm	13.20
520 nm	13.10
540 nm	13.10
560 nm	13.00
580 nm	13.00
600 nm	13.00
620 nm	13.00
640 nm	13.00
660 nm	12.90
680 nm	12.90
700 nm	12.90

**Calculated Relative Intensity Colors of Qandilite in Air**
Relative Intensity	0%	70%	100%	140%	210%	280%	350%	420%	490%	560%	630%	670%
R

Calculated Properties of Qandilite

Electron Density:

Bulk Density (Electron Density)=3.89 gm/cc
note: Specific Gravity of Qandilite =4.03 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_Qandilite= 11.54 barns/electron
U=PE_Qandilite x rElectron Density= 44.85 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Qandilite is Not Radioactive

Qandilite Classification

Dana Class:

07.02.05.01 (07)Multiple Oxides

(07.02)(A+ B++)2 X4 Spinel group

(07.02.05)(Titanium subgroup)

07.02.05.01 Qandilite (Mg,Fe)2(Ti,Fe,Al)O4 F d3m 4/m 3 2/m

07.02.05.02 Ulvospinel TiFe2O4 F d3m 4/m 3 2/m

Strunz Class:

04.BB.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.B - Metal:Oxygen = 3:4 and similar

04.BB -With only medium-sized cations

04.BB.05 Cochromite (Co,Ni,Fe)(Cr,Al)2O4 F d3m 4/m 3 2/m

04.BB.05 Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m

04.BB.05 Magnetite FeFe2O4 F d3m 4/m 3 2/m

04.BB.05 Gahnite ZnAl2O4 F d3m 4/m 3 2/m

04.BB.05 Chromite FeCr2O4 F d3m 4/m 3 2/m

04.BB.05 Galaxite (Mn,Mg)(Al,Fe)2O4 F d3m 4/m 3 2/m

04.BB.05 Cuprospinel (Cu,Mg)Fe2O4 F d3m 4/m 3 2/m

04.BB.05 Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m

04.BB.05 Brunogeierite (Ge,Fe)Fe2O4 F d3m 4/m 3 2/m

04.BB.05 Coulsonite FeV2O4 F d3m 4/m 3 2/m

04.BB.05 Hercynite FeAl2O4 F d3m 4/m 3 2/m

04.BB.05 Franklinite (Zn,Mn,Fe)(Fe,Mn)2O4 F d3m 4/m 3 2/m

04.BB.05 Jacobsite (Mn,Fe,Mg)(Fe,Mn)2O4 F d3m 4/m 3 2/m

04.BB.05 Magnesiochromite MgCr2O4 F d3m 4/m 3 2/m

04.BB.05 Magnesioferrite MgFe2O4 F d3m 4/m 3 2/m

04.BB.05 Magnesiocoulsonite MgV2O4 F d3m 4/m 3 2/m

04.BB.05 Manganochromite (Mn,Fe)(Cr,V)2O4 F d3m 4/m 3 2/m

04.BB.05 Qandilite (Mg,Fe)2(Ti,Fe,Al)O4 F d3m 4/m 3 2/m

04.BB.05 Nichromite (Ni,Co,Fe)(Cr,Fe,Al)2O4 F d3m 4/m 3 2/m

04.BB.05 Spinel MgAl2O4 F d3m 4/m 3 2/m

04.BB.05 Ulvospinel TiFe2O4 F d3m 4/m 3 2/m

04.BB.05 Zincochromite ZnCr2O4 F d3m 4/m 3 2/m

04.BB.05 Trevorite NiFe2O4 F d3m 4/m 3 2/m

04.BB.05 Vuorelainenite (Mn,Fe)(V,Cr)2O4 F d3m 4/m 3 2/m

Other Qandilite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Qandilite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Qandilite Specimen Label here :

Qandilite

(Mg,Fe++)2(Ti,Fe+++,Al)O4
Dana No: 07.02.05.01 Strunz No: 04.BB.05
Locality:

Notes: