Sborgite is a sodium borate mineral with formula Na[B5O6(OH)4]·3H2O. The formula can be written as the oxide formulation, Na2O.5B2O3.10H2O. Sometimes called sodium pentaborate pentahydrate it contains the pentaborate anion, (B5O6(OH)4)−.
| Sborgite | |
|---|---|
 | |
| General | |
| Category | Nesoborates |
| Formula (repeating unit) | Na[B5O6(OH)4]·3H2O |
| IMA symbol | Srg[1] |
| Strunz classification | 6.EA.05 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | C2/c |
| Identification | |
| Color | colorless |
| Luster | vitreous |
| Diaphaneity | transparent |
Sborgite is colorless with monoclinic crystals. It was named for Umberto Sborgi, (1883–1955), Professor of Chemistry, University of Milan, Italy. Sborgite occurs in Tuscany, Italy and the Furnace Creek district, Death Valley, California, US.[2]
 | This article about a specific mineralormineraloid is a stub. You can help Wikipedia by expanding it. |