Scheelite Information

Scheelite is a calcium tungstate mineral with the chemical formula CaWO4. It is an important ore of tungsten, used in the production of tungsten alloys and for making filaments for electric lamps.

Physical Properties of Scheelite

Color: brownish yellow, orange, greenish yellow, yellow, brown, black, colorless
Crystal System: Tetragonal
Hardness: 4.5 - 5.0
Cleavage: {110} Indistinct, {001} Indistinct
Luster: Vitreous (Glassy)
Streak: White
Transparency: Transparent, Translucent
Specific Gravity: 5.9 - 6.1 (Heavy)
Diaphaneity: Transparent to translucent

Optical Properties of Scheelite

Refractive Index: 1.920 - 2.010
Birefringence: 0.080 - 0.090
Pleochroism: Weak

Scheelite From China

Occurrences of Scheelite

Scheelite is found in hydrothermal veins, granitic rocks, and in skarns. It is also found in contact metamorphic deposits and in high-temperature greisen deposits. It is commonly associated with minerals such as calcite, fluorite, apatite, wolframite, molybdenite, and topaz.

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