Citation: Guggenheim, S.; Chang, Y. H.; Koster van Groos, A. F. (1987). Muscovite dehydroxylation: High-temperature studies Sample: T = 20 deg C, from Panasqueira, Portugal. American Mineralogist, 72, pp. 537-550.
Formula: Al2.908 F0.12 H1.88 K O11.88 Si3.092
List type: interleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Al12 F4 O24 Si8 (Al3 F O6 Si2)
Multiplicity: 1