A Geoscience Digital Image Library

TitleBangor slate (Martinsburg shale), Northampton County, Pennsylvania
DescriptionThis dark gray slate is composed primarily of graphite and magnetite (giving it the dark color), sericite (a white mica), and chlorite. It also contains minor calcite and quartz. This is a low-grade metamorphic rock.
LithostratigraphyBangor slate (Martinsburg shale)
LocationUSA ▹ Pennsylvania ▹ Northampton. Near Bangor.
PhotographerDexter Perkins. 2000.
CollectionWard’s Collection of Classic North American Rocks #77.
Key wordsslate, shale, Pennsylvania, Bangor, Martinsburg
Tech details142 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number15