A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Halotrichite from Alameda, California, USA |
|---|---|
| Description | Halotrichite is a hydrated iron aluminum sulfate. It, and its magnesium counterpart (pickeringite) form as a result of weathering of pyrite-bearing aluminous rocks. They often accumulate as efflorescence in mine workings. This “fuzzy” sample, 2 cm across, is composed of fine fibers, typical for this mineral. |
| Location | USA ▹ California ▹ Alameda. Near Alameda. |
| Photographer | Nessa Eull. 2001-06-06. |
| Collection | University of North Dakota Mineralogy Collection #862. |
| Key words | halotrichite, California |
| Tech details | 153 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 653 |
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