Examples of sericite

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The primary mineralogy of the rock is completely replaced by albite, carbonate, sericite, epidote, clinozoisite and opaque minerals.
Other alteration products are chlorite, sericite, quartz and opaque minerals.
Some plagioclase crystals are altered to sericite and clay minerals.
Alteration is variable: absent in many crystals, in others producing dense sericite aggregates which may show some recrystallization effects to produce coarser-grained white mica.
Feldspars, partially perthitic, are weakly altered to illite, kaolinite and sericite.
Plagioclase crystals are in the course of being replaced by sericite and calcite.
Both pyroxene and plagioclase show alterations along their margins with sericite and biotite as newly formed phases.
Most pyroxenes are pseudomorphed by amphibole or chlorite, and the feldspars are variably replaced by sericite, epidote and/or carbonate.
The two o dominating minerals are amphibole and plagioclase, with the latter strongly altered to saussurite and sericite.
Accessories are opaques, while chlorite, actinolite, sericite and titanite are the secondary minerals.
These zones show the effects of intense alteration: the granite is transformed into a quartz-sericite-andalusite schist.
Other secondary minerals are albite, sericite, epidote and chlorite.
Some plagioclase crystals are replaced by albite and sericite; actinolite and chlorite develop in clinopyroxene pseudomorphs.
The deformation zone is also locally overprinted by cataclasites consisting of chlorite + quartz + calcite + sericite.
Veinlets and disseminations of quartz + sericite + epidote + chlorite + pyrite + pyrrhotite + chalcopyrite are locally developed in the aureole.

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