Lizardite Crystallography

Composition

Mg3Si2O5(OH)4

Classification

1:1 Phyllosilicate, Serpentine Group

Structural Parameters

a=5.330, b=5.330, c=7.269 Å
alpha=90, beta=90, gamma=120°
Space Group: P3m

atom

x/a

y/b

z/c
Si 0.3333 0.6667 0.0704
Mg 0.3324 0.0000 0.4516
O 0.3333 0.6667 0.2920
O 0.5067 0.0000 -0.0111
OH 0.6658 0.0000 0.5862
OH 0.0000 0.0000 0.2990
H 0.6600 0.0000 0.7100
H 0.0000 0.0000 0.2000

Reference

Mellini M, and C. Viti. 1994. Crystal structure of lizardite-1T from Elba, Italy. American Mineralogist. 79:1194-1198

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Original release: 1 Oct 1998;