A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Siderite and ankerite with quartz |
|---|---|
| Description | The white material in this sample is quartz; some of it has been stained reddish by iron oxide. The darker material is a mix of siderite, FeCO3 (iron carbonate), and ankerite, CaFe(CO3)2 (calcium-iron carbonate). The two minerals are hard to tell apart, having only slightly different colors in this 9 cam wide specimen. Although they contain iron, some samples of siderite and ankerite are white or even transparent. |
| Location | USA ▹ Iowa. Near Keokuk. |
| Photographer | Darla Sondrol. 2001-06-19. |
| Collection | University of North Dakota Mineralogy Collection #704. |
| Key words | siderite, ankerite, quartz, Iowa |
| Tech details | 706 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 803 |
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