S083-tremolite

Structure Type 083: NaCa₂Mg₅(Si₈O₂₂) (OH)₃ (Tremolite)

(Si blue, O red, Ca yellow, Mg light brown, Na dark brown, H pink)

Crystal Structure Data

Spacegroup Symbol:
C 2/m

Origin Offset:
(none)

Lattice Type:
C

Unit Cell Parameters

a [A]

b [A]

c [A]

alpha [deg]

beta [deg]

gamma [deg]

9.8630

18.0480

5.2850

90.000

104.790

90.000

Fractional Coordinates of Atoms in the Asymmetric Unit

Site Label

Element

x

y

z

M4

Ca

0.0000

0.2779

0.5000

H

H

0.2088

0.0000

0.7628

M1

Mg

0.0000

0.0883

0.5000

M2

Mg

0.0000

0.1770

0.0000

M3

Mg

0.0000

0.0000

0.0000

A

Na

0.0000

0.5000

0.0000

O1

O

0.1114

0.0857

0.2182

O2

O

0.1187

0.1707

0.7251

O3

O

0.1082

0.0000

0.7154

O4

O

0.3642

0.2482

0.7928

O5

O

0.3467

0.1339

0.0998

O6

O

0.3437

0.1181

0.5910

O7

O

0.3380

0.0000

0.2921

T1

Si

0.2799

0.0842

0.2974

T2

Si

0.2882

0.1713

0.8056

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Spacegroup Symbol:	`C 2/m`
Origin Offset:	`(none)`
Lattice Type:	`C`

Unit Cell Parameters
a [A]	b [A]	c [A]	alpha [deg]	beta [deg]	gamma [deg]
`9.8630`	`18.0480`	`5.2850`	`90.000`	`104.790`	`90.000`

Fractional Coordinates of Atoms in the Asymmetric Unit
Site Label	Element	x	y	z
`M4`	`Ca`	`0.0000`	`0.2779`	`0.5000`
`H`	`H`	`0.2088`	`0.0000`	`0.7628`
`M1`	`Mg`	`0.0000`	`0.0883`	`0.5000`
`M2`	`Mg`	`0.0000`	`0.1770`	`0.0000`
`M3`	`Mg`	`0.0000`	`0.0000`	`0.0000`
`A`	`Na`	`0.0000`	`0.5000`	`0.0000`
`O1`	`O`	`0.1114`	`0.0857`	`0.2182`
`O2`	`O`	`0.1187`	`0.1707`	`0.7251`
`O3`	`O`	`0.1082`	`0.0000`	`0.7154`
`O4`	`O`	`0.3642`	`0.2482`	`0.7928`
`O5`	`O`	`0.3467`	`0.1339`	`0.0998`
`O6`	`O`	`0.3437`	`0.1181`	`0.5910`
`O7`	`O`	`0.3380`	`0.0000`	`0.2921`
`T1`	`Si`	`0.2799`	`0.0842`	`0.2974`
`T2`	`Si`	`0.2882`	`0.1713`	`0.8056`