Mineral: | main constituents: Chromite / Kosmochlor / Chromojadeite / Ekermannite / Arfvedsonite / Symplectite (texture of several intergrown minerals)
| Chemical Formula: | FeCr2O4 / NaCr[Si2O6] / Na(Al,Cr)Si2O6 / [Na][Na2 ][(Mg,Fe 2+ ) 4Al][(OH)2 |Si8O22] / [Na][Na2][Fe2+ 4Fe3+][(OH)2 | Si8O22] | Size: | 28,3 x 18,1 x 16,6 - 12,8 x 11,3 x 5,0 mm | Weight: | | Transparence: | | Quantity: | | Origin: | Tawmaw (Tawhmaw; Taw Maw), Myitkyina-Mogaung district, Kachin State, North- Burma (Myanmar) | The big polished piece has a weight of 51,95 cts. the cabochons 6,09 cts. & 5,80 cts.
| 
