Boracite on Hilgardite

Boulby Mine, Loftus, North Yorkshire, England

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)

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