Definition of chloritoid in English:

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Pronunciation: /ˈklôrəˌtoid/


A greenish-gray or black mineral resembling chlorite, found in metamorphosed clay sediments. It consists of a basic aluminosilicate of iron, often with magnesium.
Example sentences
  • The phyllites show fine-grained foliated textures and the mineral assemblage consists of chlorite, muscovite, albite, chloritoid and garnet along the main foliation.
  • In the Messaria nappe, kyanite and chloritoid in weakly sheared rocks have cracks that are filled with chlorite and quartz.
  • In contrast to South Achill, peliticlithologies are characterized by the virtual absence of prograde chlorite and chloritoid, whereas biotite is significantly more abundant.
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