Dokl. Akad. Nauk SSSR, 1975 Volume 225, Number 4,Pages 823–826(Mi dan39446)
CRYSTALLOGRAPHY
More precise defined structure of $\mathrm{Ca}$, $\mathrm{Mg}$ carbonatoborate – barcarite,
$\mathrm{Ca}_4\mathrm{Mg}[\mathrm{B}_4\mathrm{O}_6(\mathrm{OH})_6](\mathrm{CO}_3)_2$