Lithium borate

Lithium borate, also known as lithium tetraborate (Li₂B₄O₇), is the lithium salt of boric acid. Lithium borate is an ingredient for use in making glasses and ceramics.

Lithium borate can be used in the laboratory as LB buffer for gel electrophoresis of DNA and RNA. It is also used in the borax fusion method to vitrify mineral powder specimens for analysis by WDXRF spectroscopy. Naturally occurring lithium tetraborate is known as the mineral diomignite. It is exceedingly rare.