Fuchsite in Quartz

Physical Properties

Hardness: 2.5-3 (fuchsite) to 7 (quartz); Color: Emerald green with white/tan matrix; Luster: Pearly to Vitreous; Crystal Structure: Monoclinic; Cleavage: Perfect basal.

Formation & Geological History

Formed through the regional metamorphism of clay-rich sedimentary rocks or the hydrothermal alteration of ultramafic rocks, often found in phyllites and schists.

Uses & Applications

Primarily used as an ornamental stone, for lapidary work (cabochons), and as a collector's specimen. It is also significant in holistic and metaphysical communities.

Geological Facts

The vibrant green color of fuchsite is caused by small amounts of trivalent chromium replacing aluminum in the mica structure; it's often confused with verdite.

Field Identification & Locations

Identify by its distinctive flaky green mica (fuchsite) embedded within a hard white or grey quartz matrix. Commonly found in Brazil, India (where it is often called 'Green Aventurine' in mass), and Russia.

Identified on: 4/15/2026

Mode: Standard