A greenish-gray or black mineral resembling chlorite, found in metamorphosed clay sediments. It consists of a basic aluminosilicate of iron, often with magnesium.
- ‘In contrast to South Achill, peliticlithologies are characterized by the virtual absence of prograde chlorite and chloritoid, whereas biotite is significantly more abundant.’
- ‘A very low-grade metamorphism, which developed chloritoid, affects cleaved rocks.’
- ‘The phyllites show fine-grained foliated textures and the mineral assemblage consists of chlorite, muscovite, albite, chloritoid and garnet along the main foliation.’
- ‘Pyrite, garnets (partially chloritized), talc, magnetite, molybdenite, and chloritoid also commonly occur.’
- ‘In the Messaria nappe, kyanite and chloritoid in weakly sheared rocks have cracks that are filled with chlorite and quartz.’
We take a look at several popular, though confusing, punctuation marks.