Berlinite Al(PO4 ) IMA symbol: Ber grandfathered
Berlinite is a phosphate, arsenate, or vanadate mineral with the formula Al(PO4), crystallizing in the trigonal system. It has a Mohs hardness of 6.5, a calculated density of 2.618 g/cm3.
Crystallography Crystal system trigonal crystal systemWikidata (CC0) Space group P 31 2 1 Cell (Å, °) a = 4.9458, b = 4.9458, c = 10.9526; α = 90, β = 90, γ = 120 Cell volume 232.018 ų, Z = 3 Axial ratios 1.0000:1:2.2145calculated from COD 9010367 Source structure COD 9010367 (American Mineralogist, 2007) — 1 of 22 structures
Powder X-ray diffraction (calculated) 2θ (degrees, Cu Kα1) I/I₀ (max 100) d (Å) 3.374 4.283 1.835 1.552 2.307 2.473 I/I₀ 100 20.6 12.1 10 8.6 7.8
xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9010367; idealized occupancies, no preferred orientation.
Physical properties Density (calculated) 2.618 g/cm³calculated from COD 9010367 Hardness (Mohs) 6.5single source Wikidata (CC0)
Chemistry (calculated) Molecular weight 121.95 g/molcalculated from the IMA formula Composition (wt%) Al 22.12%, P 25.4%, O 52.48%
Classification Nickel-Strunz (10th) 8.AA.05Wikidata (CC0) Nickel-Strunz (9th) 8.AA.05Wikidata (CC0)
