Boro-calcite

Description

A natural Borate mineral that is slightly different in composition than Colemanite. Boro-calcite is occasionally used as a Flux for stoneware glaze and as a component in fire-retardant paint.

Synonyms and Related Terms

calcium borate; calcium pyroborate; calcium tetraborate

Physical and Chemical Properties

Insoluble in cold water. Slightly soluble in hot water. Soluble in dilute acids.

Composition	CaB4O7
Molecular Weight	mol. wt. = 195.32

Resources and Citations

• Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992

• The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry1691