Littleton formation Quartzite
Credit Line: Mineralogical and Geological Museum at Harvard University
Object number: BILLINGS-MW138
DescriptionThree distinct layers in sample, garnetiferous quartzite, sillimanite schist, and dark gray quartzite. Schist is foliated with sillimanite ≤ 2 cm. Garnetiferous quartzite is an even mixture of garnet and quartz grain < 1 mm. Only quartzite exposed is very weathered making grain sizes indistinguishable.