Material Name:	Thomsonite
	Chemical Formula:	|Na Ca2 (H2O)6|4 [Al5Si5O20]4-THO
	Unit Cell:§	orthorhombic	P n c n (# 52)
		a' = 13.0880 Å	b' = 13.0520 Å	c' = 13.2290 Å
		α' = 90.000°	β' = 90.000°	γ' = 90.000°
		(Relationship to unit cell of Framework Type: a'=a, b'=2b, c'=2c)
	Framework Density:	17.7 T/1000 Å3

Channels:

[100] 8 2.3 x 3.9* <-> [010] 8 2.2 x 4.0* <-> [001] 8 2.2 x 3.0* Dimensionality   Sorption (molecular cross section > 3.4Å): 0-dimensional   Topological (pore opening > 6-ring): 3-dimensional

	References:
		Taylor, W.H., Meek, C.A. and Jackson, W.W.
			"The structures of the fibrous zeolites"
			Z. Kristallogr., 84, 373-398 (1933)
			Material name:   Thomsonite
			Chemical formula:   [Al5Si5O20]4-THO
	§	Pluth, J.J., Smith, J.V. and Kvick, Å.
			"Neutron diffraction study of the zeolite thomsonite"
			Zeolites, 5, 74-80 (1985)
		Alberti, A., Vezzalini, G. and Tazzoli, V.
			"Thomsonite: a detailed refinement with cross checking by crystal energy calculations"
			Zeolites, 1, 91-97 (1981)
			Material name:   Thomsonite
			Chemical formula:   [Al5Si5O20]4-THO

	Name and Code derivation:
		Thomsonite   THO

§	Chemical Formula and Unit Cell taken from the reference marked with this sign