A Geoscience Digital Image Library

TitleFine-grained mica Schist, Gilpin County, Colorado
DescriptionThis is a fine grained schist that has been deformed and now contains “wavy” layers. Although no minerals can be seen in hand specimen, a microscope reveals biotite, chlorite, muscovite and quartz. This sample is 10 cm across.
LocationUSA ▹ Colorado ▹ Gilpin. Near Central City.
PhotographerMike Davis. 2001-04-26.
CollectionWard’s University Rock Collection #187.
Key wordsmica, schist, Colorado
Tech details824 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera, 60mm Nikon AF micro lens.
GeoDIL number425