Scheelite

Real mineral · uncommon · CaWO₄

Calcium tungstate and an important ore of tungsten. Displays intense blue-white fluorescence under shortwave ultraviolet light, used to locate ore bodies in the field. Forms in skarn deposits and high-temperature hydrothermal veins.

Identity

Formula

CaWO₄

Chemical class

oxide

Also known as

Calcium tungstate

Crystallography

Crystal system

tetragonal

Habits

pyramidal, tabular, massive

Fracture

subconchoidal

Physical properties

Mohs hardness

5

Density

6.11 g/cm³

Luster

adamantine, vitreous

Colors

colorless, white, yellow, orange, brown

Streak

white

Transparency

transparent, translucent

Geology

Origins

metamorphic, hydrothermal

Host rocks

skarn, granite, quartz veins

Associated minerals

Wolframite, Cassiterite, Quartz, Calcite

Geography

China, Russia, Korea, USA, Bolivia

Classification

Rarity

uncommon

Gem quality

No

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