FER: Framework Type

Framework Type FER

Framework

Framework density (FD_Si):	17.6 T/1000 Å³
Topological density:	TD₁₀ = 1021	TD = 0.887635
Essential rings:	[10₁·8₁·6₁·5₄]
Channel dimensionality:	Topological (pore opening > 6-ring): 2-dimensional

Maximum diameter of a sphere:

that can be included

6.31 Å

that can diffuse along

a: 1.56 Å

b: 3.4 Å

c: 4.69 Å

Accessible volume:

10.01 %

Secondary Building Units:

5-1

Composite Building Units:


	mor (t-tes )	fer	pcr (t-fer )


	Natural Tiling	t-dac-1	t-dac-2	t-fer	t-tes

Framework images
(click on icon for larger image)

Viewed along [001]

Shear planes

Shear planes reported along {010} and/or {110} with c/2 shifts

Probable locations are shown in the pictures to the right.

	References
	"On faults in the framework structure of the zeolite ferrierite"
	Gramlich-Meier, R., Meier, W. M. and Smith, Β. K.
	Z. Kristallogr., 169, 201-210 (1984)

Shear planes viewed along [001]

Example of {010} shear plane

Example of {110} shear plane

Year code assigned	1978
Data last updated	Jul 1, 2023