metamorphic
Green Fuchsite and Quartz
K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)
Hardness: 2-3 (Fuchsite), 7 (Quartz); Color: Emerald green to pale green; Luster: Pearly to vitreous; Crystal structure: Monoclinic; Cleavage: Perfect basal.
- Hardness
- 2-3 (Fuchsite), 7 (Quartz)
- Color
- Emerald green to pale green
- Luster
- Pearly to vitreous
Identified More metamorphic →
Explore Green Fuchsite and Quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 2-3 (Fuchsite), 7 (Quartz); Color: Emerald green to pale green; 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. The green color is caused by chromium replacing aluminum in the mica structure.
Uses & applications
Used primarily as decorative carvings, tumbled stones for the metaphysical market, and occasionally as a minor source of chromium.
Geological facts
Fuchsite is often found as small inclusions within other minerals; when it is included in quartzite, the resulting stone is known as Aventurine.
Field identification & locations
Commonly found in schist and gneiss belts worldwide, particularly in Brazil, India, and Russia. Identified in the field by its distinct green sparkle (micaceous sheen) and softness compared to other green minerals like jade.
More like this
