| General Information |
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| Other Names/Trade Names: | |
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| Chemical Formula | Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Physical Properties of Titanite |
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| Mohs Hardness | 5 to 5.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Specific Gravity | 3.50 to 3.55Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Cleavage Quality | DistinctUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) |
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| Optical Properties of Titanite |
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| Refractive Index | 1.880 to 2.099Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Optical Character | Biaxial/+Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Birefringence | 0.108 to 0.190Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Pleochroism | Green stones - strong trichroism: typically colorless - greenish yellow - brownish to yellow;
Orange/brown stones - strong: colorless - yellow - reddish-orange; Yellow stones - distinct: colorless - green-yellow - brownish-orangeHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Dispersion | StrongAnthony et al, Handbook of mineralogy (2001) |
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| Colour |
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| Colour (General) | Yellow, yellowish-green, green, brownish-green, brownUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Causes of Colour | Green, high Fe content. Green (chrome sphene), Cr3+ in octahedral coordination. Pink, Mn2+ in octahedral, for certain Mn/Fe ratios, as well as pink carbonate inclusionsW. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011) |
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| Transparency | TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references |
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| Lustre | Adamantine,ResinousAnthony et al, Handbook of mineralogy (2001) |
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| Fluorescence & other light emissions |
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| Fluorescence (General) | InertHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) |
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| Crystallography of Titanite |
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| Crystal System | MonoclinicHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Habit | Crystals wedge-shaped, flattened or prismatic, to 16 cm; compact, massive.Anthony et al, Handbook of mineralogy (2001) |
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| Geological Environment |
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| Where found: | A common accessory mineral in intermediate and felsic plutonic rocks, pegmatites, and alpine veins. In gneisses, schists, and some skarns; rarely detrital.Anthony et al, Handbook of mineralogy (2001) |
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| Inclusions in Titanite |
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| Straight rows and/or "feathers" of tiny crystals. Actinolite needles |
| Further Information |
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| Mineral information: | Titanite information at mindat.org |
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| Significant Gem Localities |
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| Afghanistan | | |
| Garnier, V., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Dubessy, J., Banks, D., Vinh, H.Q., Lhomme, T., Maluski, H., Pêcher, A., Bakhsh, K.A., Long, P.V., Trinh, P.T., and Schwarz, D. (2008): Ore Geology Reviews 34, 169-191. | | Australia | | |
| McColl and Petersen (1990) | | Canada | | |
| Robinson and Wight (1997) | | Kenya | | |
| Collection of NHM, Vienna | | Myanmar | | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok |
- Dattaw-taung (Dattaw hill)
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | |
| Ted Themelis (2008) Gems & mines of Mogok | | Russia | |
- Saranovskaya Village (Sarany)
| Hyrsl and Milisenda (1995) | | Sri Lanka | | |
| Milisenda and Henn (1999) |
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