Hydroboracite is a hydrated

borate A borate is any of several boron oxyanions, negative ions consisting of boron and oxygen, such as orthoborate , metaborate , or tetraborate ; or any salt with such anions, such as sodium metaborate, and disodium tetraborate . The name also refe ...

mineral (hence the name) of calcium and magnesium, whose chemical composition is CaMgB₆O₈(OH)₆·3H₂O. It was discovered in 1834 in the Inder lake,

Atyrau Province Atyrau Region ( kk, Атырау облысы / ; russian: Атырауская область) formerly known as Guryev Region (russian: Гурьевская область) until 1991, is one of the regions of Kazakhstan, in the west of the cou ...

Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a transcontinental country located mainly in Central Asia and partly in Eastern Europe. It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbeki ...

. Hydroboracite is a minor borate

ore Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.Encyclopædia Britannica. "Ore". Encyclopædia Britannica Online. Retrieved 7 April 2 ...

mineral.

References

{{mineral-stub Inoborates Monoclinic minerals Minerals in space group 13