A Geoscience Digital Image Library

TitleQuartzite, from near Echo Lake, Ontario, Canada
DescriptionThis green quartzite is just about 100% quartz. It is unclear why the quartz has a green color. The small red grains seen in hand specimen look like garnets. In thin section they appear, instead, to be iron oxide staining associated with alteration of an unidentifiable mafic mineral. The field of view is about 3 cm across.
LocationCanada ▹ Ontario
PhotographerNessa Eull. 2001-05-22.
CollectionWard’s University Rock Collection #180.
Key wordsquartzite, Ontario
Tech details1.17 MB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number513