A Geoscience Digital Image Library

TitleOrfordville Formation (phyllite) from near, Ely, Vermont
DescriptionThis metamorphic rock has a shiny luster due to the presence of fine grained mica. Indiviudual mineral grains cannot be seen in hand specimen, but in thin section quartz, mica, chlorite, graphite and magnetite are apparent. This sample is 9.5 cm across.
ChronostratigraphyMiddle Ordovician
LithostratigraphyOxfordville formation
LocationUSA ▹ Vermont ▹ Orange. Near Ely.
PhotographerMike Davis. 2001-04-10.
CollectionWard’s Collection of Classic North American Rocks #78.
Key wordsphyllite, Orfordville Formation, Vermont
Tech details430 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number330