Mineral Factbook

Lizardite

Mg3Si2O5(OH)4IMA symbol: Lzgrandfathered

Lizardite is a silicate mineral with the formula Mg3Si2O5(OH)4, crystallizing in the monoclinic system. It has a Mohs hardness of 2.5, a calculated density of 2.614 g/cm3.

Photos

Lizardite specimen photo
Edelmauswaldgeist · CC0 · Commons
Lizardite specimen photo
Zio · CC BY-SA 3.0 · Commons
Lizardite specimen photo
Animalculum · CC BY 4.0 · Commons
Lizardite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Crystallography

Crystal systemmonoclinic crystal systemWikidata (CC0)
Space groupP 3 1 m
Cell (Å, °)a = 5.3244, b = 5.3244, c = 7.268; α = 90, β = 90, γ = 120
Cell volume178.438 ų, Z = 1
Axial ratios1.0000:1:1.3650calculated from COD 9014664
Source structureCOD 9014664 (The Canadian Mineralogist, 2011) — 1 of 14 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.57.2683.6343.8942.1481.792
I/I₀10098.960.452.850.133.3

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9014664; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)2.614 g/cm³calculated from COD 9014664
Hardness (Mohs)
2.5single sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight277.11 g/molcalculated from the IMA formula
Composition (wt%)Mg 26.31%, Si 20.27%, O 51.96%, H 1.45%

Classification

Nickel-Strunz (10th)9.ED.15Wikidata (CC0)
Nickel-Strunz (9th)9.ED.15Wikidata (CC0)