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Pentaborate polyanion in the crystal structure of ulexite, NaCaB5O6(OH)6*5H2O

January 1, 1964

Triclinic ulexite crystals contain isolated borate polyanions [B5O6(OH)6]3- related to the well known pentaborate polyanion [B5O6(OH)4]- by addition of two hydroxyl groups to two opposite B-O triangles. The isolated ulexite polyanions form the [B5O7(OH)4]n3n- chains previously found in crystals of the related mineral probertite, NaCaB5O7(OH)4·3H2O.

Publication Year 1964
Title Pentaborate polyanion in the crystal structure of ulexite, NaCaB5O6(OH)6*5H2O
DOI 10.1126/science.145.3638.1295
Authors Joan R. Clark, Daniel E. Appleman
Publication Type Article
Publication Subtype Journal Article
Series Title Science
Index ID 70010745
Record Source USGS Publications Warehouse