Manganotantalite 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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Manganotantalite Gemstones by Size
This table shows distribution of Manganotantalite 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:0.74 cts
Heaviest:6.41 cts
Average:3.57 cts
Total photos:2
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| General Information | ||||||||||
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| Other Names/Trade Names: | ||||||||||
| Chemical Formula |
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| Physical Properties of Manganotantalite | ||||||||||
| Mohs Hardness | 5.5 to 6, Gemmological Tables (2004) | |||||||||
| Specific Gravity | 7.73 to 7.97, Gemmological Tables (2004) | |||||||||
| Cleavage Quality | Perfect, Gemmological Tables (2004) | |||||||||
| Optical Properties of Manganotantalite | ||||||||||
| Refractive Index | 2.19 to 2.34, Gemmological Tables (2004) | |||||||||
| Optical Character | Biaxial/+, Gemmological Tables (2004) | |||||||||
| Birefringence | 0.015, Gemmological Tables (2004) | |||||||||
| Colour | ||||||||||
| Colour (General) | Red, Gemmological Tables (2004) | |||||||||
| Transparency | Transparent, Gemmological Tables (2004) | |||||||||
| Crystallography of Manganotantalite | ||||||||||
| Crystal System | Orthorhombic, Gemmological Tables (2004) | |||||||||
| Further Information | ||||||||||
| Mineral information: | Manganotantalite information at mindat.org | |||||||||