Mineral Factbook

Scheelite

Ca(WO4)IMA symbol: Schgrandfathered

Scheelite is a sulfate mineral with the formula Ca(WO4), crystallizing in the tetragonal system. It has a calculated density of 6.261 g/cm3. Its streak is white.

Photos

Scheelite specimen photo
Géry PARENT · Public domain · Commons
Scheelite specimen photo
Mai Seppel · CC BY-SA 4.0 · Commons
Scheelite specimen photo
Tõnis Saadre · CC BY-SA 4.0 · Commons
Scheelite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Crystallography

Crystal systemtetragonal crystal systemWikidata (CC0)
Space groupI 41/a :2
Cell (Å, °)a = 5.205, b = 5.205, c = 11.275; α = 90, β = 90, γ = 90
Cell volume305.46 ų, Z = 4
Axial ratios1.0000:1:2.1662calculated from COD 1546034
Source structureCOD 1546034 (Journal of Physics and Chemistry of Solids, 2006) — 1 of 10 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)3.0824.7261.9121.583.0472.603
I/I₀10062.729.525.721.919.4

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 1546034; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)6.261 g/cm³calculated from COD 1546034
Streak
whitesingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight287.92 g/molcalculated from the IMA formula
Composition (wt%)Ca 13.92%, W 63.85%, O 22.23%

Classification

Nickel-Strunz (10th)7.GA.05Wikidata (CC0)
Nickel-Strunz (9th)7.GA.05Wikidata (CC0)