Al-Hermezi, H. M. (1985) Qandilite, a new spinel end-member, Mg2TiO4, from the Qala-Dizeh region, NE Iraq. Mineralogical Magazine, 49 (354) 739-744 doi:10.1180/minmag.1985.049.354.15
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Qandilite, a new spinel end-member, Mg2TiO4, from the Qala-Dizeh region, NE Iraq | ||
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
| Authors | Al-Hermezi, H. M. | Author | |
| Year | 1985 (December) | Volume | 49 |
| Issue | 354 | ||
| Publisher | Mineralogical Society | ||
| Download URL | https://rruff.info/doclib/MinMag/Volume_49/49-354-739.pdf+ | ||
| DOI | doi:10.1180/minmag.1985.049.354.15Search in ResearchGate | ||
| Generate Citation Formats | |||
| Classification | Not set | LoC | Not set |
| Mindat Ref. ID | 3795 | Long-form Identifier | mindat:1:5:3795:6 |
| GUID | 0 | ||
| Full Reference | Al-Hermezi, H. M. (1985) Qandilite, a new spinel end-member, Mg2TiO4, from the Qala-Dizeh region, NE Iraq. Mineralogical Magazine, 49 (354) 739-744 doi:10.1180/minmag.1985.049.354.15 | ||
| Plain Text | Al-Hermezi, H. M. (1985) Qandilite, a new spinel end-member, Mg2TiO4, from the Qala-Dizeh region, NE Iraq. Mineralogical Magazine, 49 (354) 739-744 doi:10.1180/minmag.1985.049.354.15 | ||
| In | (1985, December) Mineralogical Magazine Vol. 49 (354) Mineralogical Society | ||
| Abstract/Notes | Qandilite, a new species of the spinel group, has been found in a forsterite-rich rock in contact with a kaersutite-rich banded diorite from the Qala-Dizeh region, NE Iraq. Chemical analysis yielded MgO 29.62, FeO 10.32, MnO 0.76, Fe2O3 28.27, Al2O3 4.83, TiO2 26.41, SiO2 0.02, sum 100.23 wt. %. This analysis calculates to [(Mg1.20Ti0.60)][Mg0.12Mn0.02)(Al0.17)]O4 with a composition of Mg2TiO4 63.8, MgFe2O4 12.8, FeFe2O4 23.4 mole %. Qandilite is cubic with a = 8.4033±0014 Å; cell volume 593.40 Å3 and space group Fd3m; Z = 8. The seven strongest lines in the X-ray diffraction pattern are (d,I,hkl): 2.971, 30, (220); 2.53, 100, (311); 2.101, 45, (400); 1.617, 50, (333, 511); 1.486, 60, (440); 1.0938, 30, (553, 731); 0.9704, 25, (555, 751). The colour is black, lustre metallic, streak black, fracture even and the cleavage perfect on (111). It is opaque, strongly magnetic, Dcalc = 4.04, Dmeas = 4.03, and VHN100 = 960–1045 kg/mm2, with H-7. The reflection colour is grey with a pinkish tint; it is isotopic with no internal reflections. Reflectance measurement data in air and oil in the range (400–700 nm) are given. Colour values for illuminant C in air and oil in terms of CIE colour space are: x = 0.307, 0.307; y = 0.311, 0.310; Y% = 13.10, 3.0; λd = 465, 460; and Pe% = 2.0, 2.2. Calculated data for the absorption coefficients (k) and refractive indices (n) in the range 400–700 nm are also presented. | ||
Map of Localities
Locality Pages
| Locality | Citation Details |
|---|---|
| Dupezeh Mountain, Hero, Qaladiza, Pshdar District, Sulaymaniyah Governorate, Iraq |
Mineral Pages
| Mineral | Citation Details |
|---|---|
| Qandilite |
Mineral Occurrences
See Also
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