A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Quartz and limonite |
|---|---|
| Description | Here we see quartz (SiO2) crystals that have grown on the walls of vugs in a sandstone. The sandstone is stained yellow by limonite. Limonite is not a true mineral but a mixture of several related hydrated iron oxide minerals. This sample is about 7 cm across. |
| Location | USA ▹ Minnesota. Robert Mine. |
| Photographer | Shannon Heinle. 2001-04-18. |
| Collection | University of North Dakota Mineralogy Collection #1563. |
| Key words | limonite, quartz, silicate, pseudomorph |
| Tech details | 777 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 351 |
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