Material Name:	Montesommaite
	Chemical Formula:	|(K,Na)4.5 (H2O)5 | [Al4.5Si11.5O32]-MON
	Unit Cell:	tetragonal	I 41/a m d (# 141)
		a' = 7.1410 Å	b' = 7.1410 Å	c' = 17.3070 Å
		α' = 90.000°	β' = 90.000°	γ' = 90.000°
	Framework Density:	18.1 T/1000 Å3

Channels:

[100] 8 3.3 x 3.3* <-> [001] 8 3.6 x 3.6* Dimensionality   Sorption (molecular cross section > 3.4Å): 1-dimensional   Topological (pore opening > 6-ring): 3-dimensional

	References:
		Rouse, R.C., Dunn, P.J., Grice, J.D., Schlenker, J.L. and Higgins, J.B.
			"Montesommaite, (K,Na)9Al9Si23O64·10H2O, a new zeolite related to merlinoite and the gismondine group"
			Am. Mineral., 75, 1415-1420 (1990)

	Name and Code derivation:
		Montesommaite   MON