mineral
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Hardness: 2-2.5 on Mohs scale; Color: emerald green to light green; Luster: Pearly to vitreous; Crystal structure: Monoclinic; Cleavage: Perfect basal.
- Hardness
- 2-2
- Color
- emerald green to light green
- Luster
- Pearly to vitreous
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Physical properties
Hardness: 2-2.5 on Mohs scale; Color: emerald green to light green; Luster: Pearly to vitreous; Crystal structure: Monoclinic; Cleavage: Perfect basal.
Formation & geological history
Formed through regional metamorphism in phyllites and schists. The presence of chromium replaces aluminum in the muscovite structure, giving it the green color.
Uses & applications
Used primarily as an ornamental stone, as a pigment in some paints, and in the metaphysical/collecting community. Sometimes categorized as 'green mica'.
Geological facts
Fuchsite is named after the German chemist and mineralogist Johann Nepomuk von Fuchs. It is a variety of muscovite mica rather than a separate mineral species.
Field identification & locations
Identify by its micaceous habit (ability to flake into thin sheets) and characteristic shimmering green color. Commonly found in Brazil, India, and Russia.
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