Abstract
A mixture of boric acid combined with trivalent samarium doped sodium borate was fired in air at 450 °C. The addition of water to the hot residue resulted in the generation of a product in which the incorporated samarium has been reduced from the trivalent form to the divalent state as identified by emission spectroscopy. This product has been identified as a synthetic form of the mineral sborgite. The divalent samarium emission appears to result from the samarium ion occupying a boron site in the material.
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