A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Calcareous tufa from near Teluride, Colorado |
|---|---|
| Description | Calcareous tufa, also called calcareous sinter, sinter, or just tufa, is composed of calcium carbonate (calcite or argonite) that precipitates at hot springs or associated with organic material in caverns. Tufa is a name given to rocks deposited by hot springs or streams. The term generally applies to deposits of calcite, but sometimes has been used to describe silica deposits as well. A hard, dense, variety of tufa is termed travertine. This sample is 11.5 cm across. |
| Location | USA ▹ Colorado. Near Teluride. |
| Photographer | Darla Sondrol. 2001-06-13. |
| Collection | University of North Dakota Mineralogy Collection #674. |
| Key words | calcareous tufa, Colorado |
| Tech details | 520 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 744 |
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