Structure Type 095: Be3Al2Si6O18 (Beryl)

(Be dark gray, Si blue, O red, Al green; Cs (pink) and Li (yellow) occupy the large holes)


Crystal Structure Data

Spacegroup Symbol:

P 6/m c c

Origin Offset:

(none)

Lattice Type:

P

Unit Cell Parameters

a [A]

b [A]

c [A]

alpha [deg]

beta [deg]

gamma [deg]

9.2120

9.2120

9.2360

90.000

90.000

120.000

Fractional Coordinates of Atoms in the Asymmetric Unit

Site Label

Element

x

y

z

Al

Al

0.6667

0.3333

0.2500

Be

Be

0.5000

0.0000

0.2500

Cs

Cs

0.0000

0.0000

0.2500

Na

Na

0.0000

0.0000

0.0000

O1

O

0.3048

0.2352

0.0000

O2

O

0.4983

0.1473

0.1445

Si

Si

0.3892

0.1189

0.0000


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