Quartzite

 

Properties
Rock group Metamorphic
Metamorphism type Regional
Metamorphic rock class Psammitic
Protolith Quartz sandstone
Common minerals Quartz

Quartzite in Hand Sample

Sugarloaf Mountain quartzite

Tuscarora Formation quartzite with iron oxide staining

Ferruginous quartzite

Brecciated Antietam Formation: quartzite clasts cemented with iron and manganese oxides

Quartzite in Thin Section

Ghost boundaries in metamorphosed quartz sandstone, plane polars

Ghost boundaries in metamorphosed quartz sandstone, crossed polars