title: Zinnwaldite: octahedral ordering in lithium-iron micas.
abstract: Ordering of the octahedral sheet of some lithium-iron micas is proposed on the basis of chemical compositions and crystallographic properties. The model of the ordered sheet has large and small sites in the ratio 2 : 1 and explains all observed properties- the small layer thickness, the "dioctahedral reflections," and the n(120 deg) motif in polytypism.
authors.forename: M
authors.initials: M
authors.lastname: Rieder