Micaceous Quartzite
Credit Line: Mineralogical and Geological Museum at Harvard University
Object number: BILLINGS-MW37
DescriptionQuartzite containing a large amount of micas. Mica lenses are scattered throughout with some lenses containing garnet. Muscovite is ≤ 4 mm, Biotite is ≤ 2.5 mm, garnet is ≤ 2 mm.