Material Name:	Na-J (Barrer and White)
	Chemical Formula:	|Na3 (H2O)1.5 |4 [Al3Si3O12]4-JBW
	Unit Cell:	orthorhombic	P n a 21 (# 33)
		a' = 16.4260 Å	b' = 15.0140 Å	c' = 5.2240 Å
		α' = 90.000°	β' = 90.000°	γ' = 90.000°
		(Relationship to unit cell of Framework Type: a' = 2c, b' = 2b, c' = a)
	Framework Density:	18.6 T/1000 Å3

Channels:

[001] 8 3.7 x 4.8* Dimensionality   Sorption (molecular cross section > 3.4Å): 1-dimensional   Topological (pore opening > 6-ring): 1-dimensional

	References:
		Hansen, S. and Fälth, L.
			"X-ray study of the nepheline hydrate I structure"
			Zeolites, 2, 162-166 (1982)

	Name and Code derivation:
		Na-J (Barrer and White)   JBW