Earth:Mica fish
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Short description: Roughly fish-shaped mica crystal
![](/wiki/images/thumb/e/e8/Mica-fish.jpg/250px-Mica-fish.jpg)
Thin section of a mica fish in mylonitic quartzite from the Italian Alps
Mica fish are lenticular, elongate lozenge, parallelogram-shaped, or lens-shaped (roughly fish-shaped) single mica crystals that are often used as shear sense indicators.[1] They commonly occur in micaceous quartzitic mylonites. They characteristically lie with their longest dimension at a small angle to the mylonitic foliation.
References
![]() | Original source: https://en.wikipedia.org/wiki/Mica fish.
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