Rock group	Metamorphic
Metamorphism type	Regional
Metamorphic rock class	Psammitic
Protolith	Quartz sandstone
Common minerals	Quartz Hematite (cement) Calcite (cement)

Quartzite in Hand Sample

Sugarloaf Mountain quartzite
Tuscarora Formation quartzite with iron oxide staining
Ferruginous quartzite
Brecciated Antietam Formation quartzite: quartzite clasts cemented with iron and manganese oxides
Weverton Formation quartzite
Kyanite quartzite
Green quartzite

Quartzite in Thin Section

Quartzite, plane polars
Quartzite, crossed polars
Kyanite quartzite, plane polars
Kyanite quartzite, crossed polars
Ghost boundaries in quartzite, plane polars
Ghost boundaries in quartzite, crossed polars