CRYSTALLOGRAPHY

Crystal structure of triclinic hilgardite $\mathrm{Ca}_2[\mathrm{B}_5\mathrm{O}_9]\mathrm{Cl}\cdot\mathrm{H}_2\mathrm{O}= \mathrm{Ca}_2[\mathrm{B}_3^t\mathrm{B}_2^\Delta\mathrm{O}_9]\mathrm{Cl}\cdot\mathrm{H}_2\mathrm{O}$

I. M. Rumanova, Z. I. Iorysh, N. V. Belov

Institute of Cristallography of the USSR Academy of Sciences, Moscow

UDC: 548.736

Received: 24.02.1977