sericite
Ser"i*cite, n. Etym: [L. sericus silken.] (Min.) Defn: A kind of muscovite occuring in silky scales having a fibrous structure. It is characteristic of sericite schist.
Ser"i*cite, n. Etym: [L. sericus silken.] (Min.) Defn: A kind of muscovite occuring in silky scales having a fibrous structure. It is characteristic of sericite schist.