Category Inoborates Strunz classification 6.BC.10 Space group Pccn | Formula
(repeating unit) CaB2O4 Crystal system Orthorhombic | |
Crystal class Dipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m) | ||
Calciborite, CaB2O4, is a rare calcium borate mineral.
It was first described in 1955 in the Novofrolovskoye copper–boron deposit, near Krasnoturinsk, Turinsk district, Northern Ural Mountains, Russia. It occurs in a skarn deposit formed in limestone adjacent to a quartz diorite intrusive. It occurs associated with: sibirskite (another rare calcium borate mineral), calcite, dolomite, garnet, magnetite and pyroxene. It has also been reported from the Fuka mine of Okayama Prefecture, Japan.
References
Calciborite Wikipedia(Text) CC BY-SA