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Qandilite Mineral Data
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General Qandilite Information
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 Chemical Formula: |
(Mg,Fe++)2(Ti,Fe+++,Al)O4 |
| Composition: |
Molecular Weight = 179.98 gm |
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Magnesium 17.56 % Mg 29.11 % MgO |
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Titanium 15.96 % Ti 26.63 % TiO2 |
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Aluminum 3.00 % Al 5.67 % Al2O3 |
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Iron 27.93 % Fe 11.98 % FeO / 26.62 % Fe2O3 |
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Oxygen 35.56 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mg1.3Fe3+0.4Fe2+0.3Ti0.6Fe3+0.2Al0.2O4 |
| 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 |
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PDF 25-1157 |
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Qandilite Image |
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Images:
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Images:
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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 |
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Qandilite Crystallography
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| Cell Dimensions: |
a = 8.4033, Z = 8; V = 593.40 Den(Calc)= 4.03 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.53(1), 1.486(0.6), 1.617(0.5), |
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Physical Properties of Qandilite
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| 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 |
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Optical Properties of Qandilite
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| Optical Data: |
Isotropic. |
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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 |
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∑ R(λ) |
| 400 nm |
14.80 |
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| 420 nm |
14.20 |
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| 440 nm |
13.80 |
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| 460 nm |
13.50 |
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| 480 nm |
13.30 |
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| 500 nm |
13.20 |
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| 520 nm |
13.10 |
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| 540 nm |
13.10 |
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| 560 nm |
13.00 |
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| 580 nm |
13.00 |
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| 600 nm |
13.00 |
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| 620 nm |
13.00 |
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| 640 nm |
13.00 |
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| 660 nm |
12.90 |
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| 680 nm |
12.90 |
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| 700 nm |
12.90 |
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Calculated Relative Intensity Colors of Qandilite in Air
Relative
Intensity |
0% |
70% |
100% |
140% |
210% |
280% |
350% |
420% |
490% |
560% |
630% |
670% |
| R |
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Calculated Properties of Qandilite
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| Electron Density: |
Bulk Density (Electron Density)=3.89 gm/cc
note: Specific Gravity of Qandilite =4.03 gm/cc.
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| Fermion Index: |
Fermion Index = 0.04
Boson Index = 0.96 |
| Photoelectric: |
PEQandilite = 11.54 barns/electron
U=PEQandilite x rElectron Density= 44.85 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Qandilite is Not Radioactive |
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Qandilite Classification
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| Dana Class: |
07.02.05.01 (07)Multiple Oxides |
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(07.02)(A+ B++)2 X4 Spinel group |
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(07.02.05)(Titanium subgroup) |
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07.02.05.01 Qandilite (Mg,Fe)2(Ti,Fe,Al)O4 F d3m 4/m 3 2/m |
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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 |
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04.B - Metal:Oxygen = 3:4 and similar |
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04.BB -With only medium-sized cations |
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04.BB.05 Cochromite (Co,Ni,Fe)(Cr,Al)2O4 F d3m 4/m 3 2/m |
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04.BB.05 Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m |
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04.BB.05 Magnetite FeFe2O4 F d3m 4/m 3 2/m |
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04.BB.05 Gahnite ZnAl2O4 F d3m 4/m 3 2/m |
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04.BB.05 Chromite FeCr2O4 F d3m 4/m 3 2/m |
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04.BB.05 Galaxite (Mn,Mg)(Al,Fe)2O4 F d3m 4/m 3 2/m |
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04.BB.05 Cuprospinel (Cu,Mg)Fe2O4 F d3m 4/m 3 2/m |
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04.BB.05 Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m |
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04.BB.05 Brunogeierite (Ge,Fe)Fe2O4 F d3m 4/m 3 2/m |
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04.BB.05 Coulsonite FeV2O4 F d3m 4/m 3 2/m |
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04.BB.05 Hercynite FeAl2O4 F d3m 4/m 3 2/m |
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04.BB.05 Franklinite (Zn,Mn,Fe)(Fe,Mn)2O4 F d3m 4/m 3 2/m |
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04.BB.05 Jacobsite (Mn,Fe,Mg)(Fe,Mn)2O4 F d3m 4/m 3 2/m |
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04.BB.05 Magnesiochromite MgCr2O4 F d3m 4/m 3 2/m |
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04.BB.05 Magnesioferrite MgFe2O4 F d3m 4/m 3 2/m |
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04.BB.05 Magnesiocoulsonite MgV2O4 F d3m 4/m 3 2/m |
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04.BB.05 Manganochromite (Mn,Fe)(Cr,V)2O4 F d3m 4/m 3 2/m |
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04.BB.05 Qandilite (Mg,Fe)2(Ti,Fe,Al)O4 F d3m 4/m 3 2/m |
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04.BB.05 Nichromite (Ni,Co,Fe)(Cr,Fe,Al)2O4 F d3m 4/m 3 2/m |
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04.BB.05 Spinel MgAl2O4 F d3m 4/m 3 2/m |
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04.BB.05 Ulvospinel TiFe2O4 F d3m 4/m 3 2/m |
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04.BB.05 Zincochromite ZnCr2O4 F d3m 4/m 3 2/m |
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04.BB.05 Trevorite NiFe2O4 F d3m 4/m 3 2/m |
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04.BB.05 Vuorelainenite (Mn,Fe)(V,Cr)2O4 F d3m 4/m 3 2/m |
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Other Qandilite Information
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| 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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Qandilite
(Mg,Fe++)2(Ti,Fe+++,Al)O4
Dana No: 07.02.05.01 Strunz No: 04.BB.05
Locality:
Notes:
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