Fuchsite on Quartz

Physical Properties

Hardness: 2-3 (Fuchsite), 7 (Quartz); Color: Emerald green to pale green flakes on white/light grey matrix; Luster: Pearly to vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect mica-like cleavage in the green portions.

Formation & Geological History

Formed during regional metamorphism of clay-rich sediments or the hydrothermal alteration of ultramafic rocks. The presence of trivalent chromium gives it the distinct green color.

Uses & Applications

Primarily used as a decorative stone, mineral specimen for collectors, and sometimes ground up as a pigment or glitter. It is a popular stone in metaphysical circles.

Geological Facts

Fuchsite is named after the German chemist and mineralogist Johann Nepomuk von Fuchs. It is a chromium-rich variety of muscovite. When it occurs in massive form as a rock mixed with other minerals, it is often called Verdyte.

Field Identification & Locations

Identify in the field by looking for bright green micaceous scales that sparkle in the light, usually hosted within a white or tan quartz or schist matrix. Common in metamorphic belts like those in Brazil, India, and Russia.

Identified on: 5/2/2026

Mode: Standard