Sborgite

Sborgite
General
Category Nesoborates
Formula
(repeating unit)
Na[B5O6(OH)4]·3H2O
Strunz classification 06.EA.05

Sborgite is a sodium borate mineral with formula Na[B5O6(OH)4]·3H2O. The formula can be written as the oxide formulation, Na2O.5B2O3.10H2O. Sometimes called sodium pentaborate pentahydrate it contains the pentaborate anion, (B5O6(OH)4).

Sborgite is colourless with monoclinic crystals. It was named for Umberto Sborgi, (1883 - 1955), Professor of Chemistry, University of Milan, Italy. Sborgite occurs in Tuscany, Italy and the Furnace Creek district, Death Valley, California, USA. [1]

See also

References

  1. http://rruff.geo.arizona.edu/doclib/hom/sborgite.pdf Mineral Handbook


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