A Geoscience Digital Image Library

TitleSiderite from Roxbury, Connecticut
DescriptionSiderite is iron carbonate. It is closely related to calcite but contains iron instead of calcium. It generally forms massive samples like the one shown here. Generally, crystals are quite small, but in this sample a close look reveals some crystal faces and rhombohedral cleavage, typical of the calcite group of minerals. Siderite is, in some places, mined as an ore of iron. This specimen is 8 cm across.
LocationUSA ▹ Connecticut. Near Roxbury.
PhotographerDarla Sondrol. 2001-06-20.
CollectionUniversity of North Dakota Mineralogy Collection #1774.
Key wordsSiderite, Connecticut
Tech details752 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number810