Material Name:	Nabesite
	Chemical Formula:	|Na4 (H2O)8|2 [Be2Si8O20]2-NAB
	Unit Cell:	orthorhombic	P 21 21 21 (# 19)
		a' = 9.7480 Å	b' = 10.1330 Å	c' = 11.9540 Å
		α' = 90.000°	β' = 90.000°	γ' = 90.000°
	Framework Density:	16.9 T/1000 Å3

	Channels:	[110] 9 2.7 x 4.1* <-> [-1 -1 0] 9 3.0 x 4.6* Dimensionality   Sorption (molecular cross section > 3.4Å): 0-dimensional   Topological (pore opening > 6-ring): 3-dimensional
	Stability:	reversable dehydration

	References:
		Petersen, O.V., Giester, G., Brandstätter, F. and Niedermayr, G.
			"Nabesite, Na2BeSi4O102O, a new mineral species from the Ilímaussaq alkaline complex, South Greenland"
			Can. Mineral., 40, 173-181 (2002)

	Name and Code derivation:
		Nabesite   NAB