mineral
Fuchsite
Chromium-bearing Muscovite - K(Al,Cr)2(AlSi3O10)(OH)2
Hardness: 2-2.5 on Mohs scale; Color: Emerald green to light green; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect basal; Specific gravity: 2.8 - 2.9
- Hardness
- 2-2
- Color
- Emerald green to light green
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 2-2.5 on Mohs scale; Color: Emerald green to light green; Luster: Vitreous to pearly; Crystal structure: Monoclinic; Cleavage: Perfect basal; Specific gravity: 2.8 - 2.9
Formation & geological history
Formed through regional metamorphism in phyllites and schists, particularly those with low silica content and high chromium. It is a common accessory mineral in metamorphic rocks across various geological ages.
Uses & applications
Used primarily as decorative stone, in lapidary work (cabling/beads), as a pigment, and as a popular mineral specimen for collectors and metaphysical users.
Geological facts
The vibrant green color of Fuchsite is caused by the presence of chromium, the same element that gives emeralds their green hue. It is named after the German mineralogist Johann Nepomuk von Fuchs.
Field identification & locations
Identify by its mica-like flakey/platy structure and distinct bright green color. Often found with Ruby (Ruby in Fuchsite) or in quartzite. Common locations include Brazil, India, Russia, and the USA.
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Metamorphic
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metamorphic
Gypsum (variety Selenite or Alabaster)
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Mineral
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Mineral/Rock
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Granite (Phaneritic intrusive igneous rock)
igneous