Boracite on Hilgardite

Reference: 2433

Attractive bright lustrous blue Boracite crystals formed over orange hilgardite. Nice contrasting specimen with a little additional magnesite. Borate specimens are difficult to come by nowadays as Boulby no longer mines the sylvinite seam in which the borates occurred.

Formulas: Hilgardite Ca₂B₅O₉Cl ^. H₂O; Boracite Mg₃B₇O₁₃Cl; Magnesite MgCO₃

Status: Sold

Dimensions: 68x50x42mm

Size: Small Cabinet (S)