Liddicoatite
Madagascar
1.25 carats
© Mineral Classics
Liddicoatite Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
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Liddicoatite Gemstones by Size
This table shows distribution of Liddicoatite gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:1.25 cts
Heaviest:1.70 cts
Average:1.48 cts
Total photos:2
Do you have a larger Liddicoatite? Why not upload a photo?
| General Information | ||||||||||||||||||||||||||||||
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| A variety or type of: | Tourmaline | |||||||||||||||||||||||||||||
| Chemical Formula |
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| Physical Properties of Liddicoatite | ||||||||||||||||||||||||||||||
| Mohs Hardness | 7.5, Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Specific Gravity | 3.02, Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Tenacity | Brittle, Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Cleavage Quality | Poor, Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Fracture | Uneven,Conchoidal, Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Optical Properties of Liddicoatite | ||||||||||||||||||||||||||||||
| Optical Character | Uniaxial/-, Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Pleochroism | Strong: dark brown - light brown, Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Colour | ||||||||||||||||||||||||||||||
| Colour (General) | Brown, green, pink, red, blue; commonly zoned parallel to pyramid faces., Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Causes of Colour | Green, Fe2+ and Ti4+ in octahedral coordination, influence of various charge transfer processes involving iron is a distinct possibility. Yellow-green, Mn2+-O-Ti4+ charge transfer. Greenish yellow, Mn2+ in octahedral coordination (rare). Orange, yellow + pink. Pink to red, related to manganese, generally believed to be due to Mn3+ in octahedral coordination, sometimes caused by irradiation. Brown, Fe2+→Ti4+ charge transfer, Pragmatic Spectroscopy For Gemologists (2011) | |||||||||||||||||||||||||||||
| Transparency | Transparent,Translucent, Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Lustre | Vitreous, Handbook of mineralogy (2001) Vitreous on fractures. | |||||||||||||||||||||||||||||
| Crystallography of Liddicoatite | ||||||||||||||||||||||||||||||
| Crystal System | Hexagonal, Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Habit | Crystals stout prismatic, with curved convex trigonal outline, deeply striated, to 25 cm., Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Geological Environment | ||||||||||||||||||||||||||||||
| Where found: | Detrital in soil, an apparent product of the local pegmatites., Handbook of mineralogy (2001) | |||||||||||||||||||||||||||||
| Further Information | ||||||||||||||||||||||||||||||
| Mineral information: | Liddicoatite information at mindat.org | |||||||||||||||||||||||||||||