Mineral Factbook

Fluorapatite

Ca5(PO4)3FIMA symbol: Faprenamed

Fluorapatite is a phosphate, arsenate, or vanadate mineral with the formula Ca5(PO4)3F. It has a calculated density of 3.208 g/cm3. Its streak is white.

Photos

Fluorapatite specimen photo
Didier Descouens · CC BY-SA 4.0 · Commons
Fluorapatite specimen photo
Didier Descouens · CC BY 3.0 · Commons
Fluorapatite specimen photo
Géry PARENT · CC BY-SA 3.0 · Commons
Fluorapatite specimen photo
Géry PARENT · CC BY-SA 3.0 · Commons

Crystallography

Space groupP 63/m
Cell (Å, °)a = 9.384, b = 9.384, c = 6.8842; α = 90, β = 90, γ = 120
Cell volume525 ų, Z = 2
Axial ratios1.0000:1:0.7336calculated from COD 1549763
Source structureCOD 1549763 (Journal of Mineralogical and Petrological Sciences, 2018) — 1 of 41 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.8052.7092.7751.8383.4421.939
I/I₀10058.440.836.536.129.4

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 1549763; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)3.208 g/cm³calculated from COD 1549763
Streak
whitesingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight504.3 g/molcalculated from the IMA formula
Composition (wt%)Ca 39.74%, P 18.43%, O 38.07%, F 3.77%

Classification

Nickel-Strunz (10th)8.BN.05Wikidata (CC0)
Nickel-Strunz (9th)8.BN.05Wikidata (CC0)
Dana (8th)41.8.1.1Wikidata (CC0)