Mineral Factbook

Natrolite

Na2(Si3Al2)O10·2H2OIMA symbol: Ntrapproved

Natrolite is a silicate mineral with the formula Na2(Si3Al2)O10·2H2O, crystallizing in the orthorhombic system. It has a calculated density of 2.252 g/cm3. Its streak is white.

Photos

Natrolite specimen photo
Edelmauswaldgeist · CC0 · Commons
Natrolite specimen photo
Jerry Cone · Public domain · Commons
Natrolite specimen photo
Didier Descouens · CC BY-SA 4.0 · Commons
Natrolite specimen photo
Géry PARENT · CC BY-SA 3.0 · Commons

Crystallography

Crystal systemorthorhombic crystal systemWikidata (CC0)
Space groupF d d 2
Cell (Å, °)a = 18.347, b = 18.561, c = 6.587; α = 90, β = 90, γ = 90
Cell volume2243.13 ų, Z = 8
Axial ratios0.9885:1:0.3549calculated from COD 9005244
Source structureCOD 9005244 (European Journal of Mineralogy, 1995) — 1 of 21 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)5.882.8592.8466.5243.1594.357
I/I₀10067.663.961.844.342.6

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9005244; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)2.252 g/cm³calculated from COD 9005244
Streak
whitesingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight380.22 g/molcalculated from the IMA formula
Composition (wt%)Na 12.09%, Si 22.16%, Al 14.19%, O 50.49%, H 1.06%

Classification

Nickel-Strunz (10th)9.GA.05Wikidata (CC0)
Nickel-Strunz (9th)9.GA.05Wikidata (CC0)