A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Hydromagnesite with serpentine (genthite, garnierite) and magnesite from near Lancaster, Pennsylvania |
|---|---|
| Description | This sample contains predominately green Ni-rich serpentine (sometimes referred to as genthite or garnierite), and yellow patches with hydromagnesite needles on magnesite. Hydromagnesite is a hydrated magnesium carbonate hydroxide. Serpentine is a hydrated magnesium silicate. Magnesite is magnesium carbonate. These minerals often form by alteration of mafic-ultramafic igneous rocks. This sample is 9 cm across. |
| Location | USA ▹ Pennsylvania. Near Lancaster. Cedar Hill Quarry. |
| Photographer | Darla Sondrol. 2001-06-13. |
| Collection | University of North Dakota Mineralogy Collection #727. |
| Key words | hydromagnesite, genthite, magnesite, serpentine, Pennsylvania, garnierite |
| Tech details | 581 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 732 |
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