![Fuchsite Schist with Quartz (Chromian Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2] Schist) — metamorphic](https://media.rock.id/fuchsite-schist-with-quartz-de448d4e-70ef-4292-b3eb-2f0434a0e96e-compressed.jpg)
metamorphic
Fuchsite Schist with Quartz
Chromian Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2] Schist
Hardness: 2.5 to 3 for fuchsite matrix, 7 for quartz veinlets. Color: Bright emerald-green to forest green with silvery-sparkling mica flakes and translucent white to reddish quartz bands. Luster: Pearly to silky (fuchsite) and vitreous (quartz). Cleavage: Perfect basal cleavage in mica components.…
- Hardness
- 2
- Luster
- Pearly to silky (fuchsite) and vitreous (quartz)
Identified More metamorphic →
Explore Fuchsite Schist with Quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 2.5 to 3 for fuchsite matrix, 7 for quartz veinlets. Color: Bright emerald-green to forest green with silvery-sparkling mica flakes and translucent white to reddish quartz bands. Luster: Pearly to silky (fuchsite) and vitreous (quartz). Cleavage: Perfect basal cleavage in mica components. Specific gravity: ~2.8-3.0. Structure: Foliated schistose texture.
Formation & geological history
Formed through regional metamorphism of clay-rich sedimentary rocks or mafic/ultramafic igneous rocks in the presence of chromium-rich hydrothermal fluids under medium grade pressure and temperature conditions.
Uses & applications
Popular as an ornamental stone, cabochons for jewelry, lapidary carvings, decorative garden stones, and mineral display specimens. Also valued in holistic and gemstone collections.
Geological facts
Fuchsite is named after the German chemist and mineralogist Johann Nepomuk von Fuchs. The intense green color is caused by trace amounts of chromium substituting for aluminum in the muscovite crystal lattice.
Field identification & locations
Identified by its distinctive sparkling metallic green flaky foliage interspersed with white quartz veins. Commonly found in Brazil, India, Madagascar, Russia, and South Africa. Collectors look for rich emerald-green coloration and well-defined quartz veining.
More like this
