- Siltite-argillite
Siltite-argillite is a rock type with
silt -sizedquartz grains that are completely separated from each other by a large proportion ofsericite and acts as a moreductile unit.One of three rock type definitions that were first applied in the Coeur d'Alene Mining District to the
Revett Formation (White and Wilson, 1982) but have since been used in describing other Belt formations as well.See also
*
Argillite
*Vitreous quartzite
*Sericitic quartzite
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