Dokl. Akad. Nauk SSSR, 1977 Volume 234, Number 3,Pages 586–589(Mi dan41011)
CRYSTALLOGRAPHY
On crystal structures of native rhodonite
$\mathrm{CaMn}_4[\mathrm{Si}_5\mathrm{O}_{15}]$ and synthetic
$\mathrm{NaHCd}_4[\mathrm{Ge}_5\mathrm{O}_{15}]$ and $\mathrm{LiHCd}_4[\mathrm{Ge}_5\mathrm{O}_{15}]$