- a fine-grained variety of muscovite produced by the alteration of feldspar.
Origin of sericite
Examples from the Web for sericite
Historical Examples of sericite
There is some sericite present, also magnetite, resulting from the decomposition of the biotite.
There is also a small amount of hematite, pyroxene and sericite.
A dark compact rock, in which calcite and sericite predominate.
In igneous rock the ore-bearing solutions may have altered the wall rock to a dense mixture of quartz, sericite, and chlorite.
Alunite is a potassium-aluminum sulphate, which differs from sericite in that sulphur takes the place of silicon.