
mineral
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2
AI-generated identification · may be incorrectHardness of 2 to 2.5 on the Mohs scale, bright emerald to light green color with a pearly luster, monoclinic crystal system, and perfect basal cleavage.
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Physical properties
Hardness of 2 to 2.5 on the Mohs scale, bright emerald to light green color with a pearly luster, monoclinic crystal system, and perfect basal cleavage.
Formation & geological history
Formed through the hydrothermal alteration of chromium-rich ultramafic rocks in metamorphic environments.
Uses & applications
Used primarily as a decorative mineral specimen, in lapidary arts, and as an ore mineral for chromium extraction.
Geological facts
The green color is attributed to chromium substitution for aluminum within the mica structure. It is often found associated with quartz veins and ruby-in-fuchsite specimens.
Field identification & locations
Identified easily by its distinctive sparkling green mica flakes and soft texture. Common localities include Russia, Brazil, India, and Zimbabwe.
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Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
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sedimentary
Tumbled granite
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igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
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Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous