Mica fish are single crystals of mica,most often biotite,with an elongate,lozenge- or lens-like form,mostly as inclusions in micaceous-quartzitic mylonites and ultramylonites. Mylonites are metamorphic rocks,formed by intense recrystallization combined with ductile deformation,resulting in a fine grain size of the rock and a foliated texture. Mica fish often serve well as shear sense indicators | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5005 px × 3850 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |