A Geoscience Digital Image Library

TitleFerrous oolitic (red) limestone
DescriptionThis is a polished sample of red limestone. The red color is due to the presence of hematite, Fe2O3. The rounded shapes apparent on the polished surface are oolites. The specimen is about 8 cm across.
PhotographerTwyla Baker. 2001-06-11.
CollectionUniversity of North Dakota Mineralogy Collection.
Key wordslimestone, oolite
Tech details1010 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number693