Category Inoborates Strunz classification 6.CB.15 Space group P2/c | Formula
(repeating unit) CaMgB6O8(OH)6·3H2O Crystal system Monoclinic | |
 | ||
Crystal class Prismatic (2/m)
(same H-M symbol) | ||
Hydroboracite is a hydrated borate mineral (hence the name) of calcium and magnesium, whose chemical composition is CaMgB6O8(OH)6·3H2O. It was discovered in 1834 in Atyrau Province, Kazakhstan. Hydroboracite is a minor borate ore mineral.
References
Hydroboracite Wikipedia(Text) CC BY-SA