Scheelite Mineral Facts:

 

Chemical Formula: CaWO4 80.6% Tungsten Oxide

The mineral usually contains a little molybdenum in place of some of the tungsten. It nearly always contains also a little iron.

Colors: White, yellow, orange, green, brown. Streak is white.

Hardness: 4.5 to 5

Density: 6.05 

Unusually high for a mineral with nonmetallic luster.

Cleavage: Perfect parallel to the pyramid. Fracture uneven, brittle.

Crystallography: Tetragonal; tri-pyramidal

Crystals usually simple pyramids of first order. Closely resemble isometric octahedrons in angles

Luster:Vitreous to adamantine; transparent to opaque.

Optics: (Refractive Index):  e= 1.9345,  w= 1.9185

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