Mineral Factbook

Brazilianite

NaAl3(PO4)2(OH)4IMA symbol: Bzlgrandfathered

Brazilianite is a phosphate, arsenate, or vanadate mineral with the formula NaAl3(PO4)2(OH)4, crystallizing in the monoclinic system. It has a calculated density of 2.998 g/cm3. Its streak is white.

Photos

Brazilianite specimen photo
Kora27 · CC BY-SA 4.0 · Commons
Brazilianite specimen photo
Osama Shukir Muhammed Amin FRCP(Glasg) · CC BY-SA 4.0 · Commons
Brazilianite specimen photo
Parent Géry · Public domain · Commons
Brazilianite specimen photo
Parent Géry · CC BY-SA 3.0 · Commons

Crystallography

Crystal systemmonoclinic crystal systemWikidata (CC0)
Space groupP 1 21/n 1
Cell (Å, °)a = 11.233, b = 10.142, c = 7.097; α = 90, β = 97.37, γ = 90
Cell volume801.847 ų, Z = 4
Axial ratios1.1076:1:0.6998calculated from COD 9007592
Source structureCOD 9007592 (Acta Crystallographica, Section B, 1974)

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)5.0712.9852.6842.8735.7822.729
I/I₀10086.684.851.638.537.5

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9007592; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)2.998 g/cm³calculated from COD 9007592
Streak
whitesingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight361.91 g/molcalculated from the IMA formula
Composition (wt%)Na 6.35%, Al 22.37%, P 17.12%, O 53.05%, H 1.11%

Classification

Nickel-Strunz (10th)8.BK.05Wikidata (CC0)
Nickel-Strunz (9th)8.BK.05Wikidata (CC0)