Pyroxmangite
Brazil
3.17 carats
© Palagems
Pyroxmangite forms translucent red, red-brown, dark-brown, pink, brownish, yellowish, purplish tabular crystals with vitreous to pearly lustre. Crystals are frequently twinned.
Fine crystals have been faceted, but it is usually more suitable for cabochons.
Pyroxmangite Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
|  |  |
 |
Pyroxmangite Gemstones by Size
This table shows distribution of Pyroxmangite 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:0.27 cts
Heaviest:35.22 cts
Average:7.30 cts
Total photos:9
Do you have a larger Pyroxmangite? Why not upload a photo?
| General Information | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chemical Formula |
| ||||||||||||||||
| Physical Properties of Pyroxmangite | |||||||||||||||||
| Mohs Hardness | 5 to 6, Gemmological Tables (2004) More from other references | ||||||||||||||||
| Specific Gravity | 3.76 to 3.77, Gemmological Tables (2004) More from other references | ||||||||||||||||
| Cleavage Quality | Perfect, Gems, Sixth Edition (2006) More from other references | ||||||||||||||||
| Fracture | Uneven, Gemstones (2009) | ||||||||||||||||
| Optical Properties of Pyroxmangite | |||||||||||||||||
| Refractive Index | 1.735 to 1.756, Gemmological Tables (2004) More from other references | ||||||||||||||||
| Optical Character | Biaxial/+, Gemmological Tables (2004) More from other references | ||||||||||||||||
| Birefringence | 0.017 to 0.019, Gemmological Tables (2004) More from other references | ||||||||||||||||
| Dispersion | Moderate, Gemstones (2009) | ||||||||||||||||
| Colour | |||||||||||||||||
| Colour (General) | Red, pink, brownish, Gemmological Tables (2004) More from other references | ||||||||||||||||
| Transparency | Transparent, Gemmological Tables (2004) More from other references | ||||||||||||||||
| Lustre | Vitreous,Pearly, Gemstones (2009) | ||||||||||||||||
| Crystallography of Pyroxmangite | |||||||||||||||||
| Crystal System | Triclinic, Gemmological Tables (2004) More from other references | ||||||||||||||||
| Habit | Tabular, Gems, Sixth Edition (2006) More from other references | ||||||||||||||||
| Geological Environment | |||||||||||||||||
| Where found: | Pyroxmangite occurs in regionally metamorphosed manganese ore deposits and in manganiferous rocks., Gems, Sixth Edition (2006) More from other references | ||||||||||||||||
| Further Information | |||||||||||||||||
| Mineral information: | Pyroxmangite information at mindat.org | ||||||||||||||||
| Significant Gem Localities | |||||||||||||||||
| |||||||||||||||||