Material Name:	AlPO-D
	Chemical Formula:	[Al16P16O64]-APD
	Unit Cell:	orthorhombic	P c a 21 (# 29)
		a' = 19.1870 Å	b' = 8.5760 Å	c' = 9.8040 Å
		α' = 90.000°	β' = 90.000°	γ' = 90.000°
		(Relationship to unit cell of Framework Type: a' = b, b' = a, c' = c)
	Framework Density:	19.8 T/1000 Å3

Channels:

[010] 8 2.3 x 6.0* <-> [201] 8 1.3 x 5.8* Dimensionality   Sorption (molecular cross section > 3.4Å): 0-dimensional   Topological (pore opening > 6-ring): 2-dimensional

	References:
		Keller, E.B., Meier, W.M. and Kirchner, R.M.
			"Synthesis, structures of AlPO4-C and AlPO4-D, and their topotactic transformation"
			Solid State Ionics, 43, 93-102 (1990)

	Name and Code derivation:
		AlPO4-D   APD