TY  - JOUR
A1  - Pannach, Melanie
A1  - Paschke, Iris
A1  - Schmidt, Horst
A1  - Freyer, Daniela
A1  - Voigt, Wolfgang
T1  - Crystallization of metastable monoclinic carnallite, KCl·MgCl2·6H2O: missing structural link in the carnallite family
Y1  - 2020
VL  - 76
IS  - 5
SP  - 507
EP  - 512
JF  - Acta Crystallographica Section C
DO  - 10.1107/S2053229620005197
DO  - 10.23689/fidgeo-4586
N2  - During evaporation of natural and synthetic K–Mg–Cl brines, the formation of almost square plate-like crystals of potassium carnallite (potassium chloride magnesium dichloride hexahydrate) was observed. A single-crystal structure analysis revealed a monoclinic cell [a = 9.251 (2), b = 9.516 (2), c = 13.217 (4) Å, β = 90.06 (2)° and space group C2/c]. The structure is isomorphous with other carnallite-type compounds, such as NH4Cl·MgCl2·6H2O. Until now, natural and synthetic carnallite, KCl·MgCl2·6H2O, was only known in its orthorhombic form [a = 16.0780 (3), b = 22.3850 (5), c = 9.5422 (2) Å and space group Pnna].
UR  - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/8932
ER  -