Mineral Factbook

Triphylite

LiFe2+(PO4)IMA symbol: Trpgrandfathered

Triphylite is a phosphate, arsenate, or vanadate mineral with the formula LiFe2+(PO4), crystallizing in the orthorhombic system. It has a calculated density of 3.529 g/cm3.

Photos

Triphylite specimen photo
Mai Seppel · CC BY-SA 4.0 · Commons
Triphylite specimen photo
Mai Seppel · CC BY-SA 4.0 · Commons
Triphylite specimen photo
Shannon Heinle · CC0 · Commons
Triphylite specimen photo
Nessa Eull · CC0 · Commons

Crystallography

Crystal systemorthorhombic crystal systemWikidata (CC0)
Space groupP b n m
Cell (Å, °)a = 4.7138, b = 10.3826, c = 6.0499; α = 90, β = 90, γ = 90
Cell volume296.091 ų, Z = 4
Axial ratios0.4540:1:0.5827calculated from COD 9004883
Source structureCOD 9004883 (The Canadian Mineralogist, 2004) — 1 of 3 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.5333.5013.0254.2921.752.473
I/I₀10075.566.460.335.330.6

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9004883; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)3.529 g/cm³calculated from COD 9004883

Classification

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