Citation: Miura Y; Kato T; Rucklidge J C; Matsueda H (1981). Natroapophyllite, a new orthorhombic sodium analog of apophyllite II. Crystal structure. American Mineralogist, 66, pp. 410-423.
Formula: Ca4 F H16 Na O28 Si8
List type: interleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: O20 Si8 (O5 Si2)
Multiplicity: 1
Coordination sequences: