These volcanics contain chloritised cordierite and some have garnet.
en.wikipedia.org The accompanying amphibolite facies metamorphism is characterized by sillimanite and, locally, garnet, andalusite, and cordierite.
en.wikipedia.org Where the schists of sedimentary origin have been pierced by these igneous intrusions, they are charged with contact minerals such as sillimanite, cordierite, kyanite and andalusite.
en.wikipedia.org The company develops and markets specialized additives for paper, paints and coatings, plastics, cordierite ceramics, consumables, personal care and pharmaceutical products.
en.wikipedia.org The mineral composition is variable, but commonly contains mica and pyroxene while porphyroblasts of pyroxene, cordierite or andulusite also develop.
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