A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Hydromagnesite from Alameda County, California |
|---|---|
| Description | Hydromagnesite, as its name implies, is a hydrated magnesium carbonate. Specifically, it is Mg5(CO3)4(OH)2·4H2O. It most commonly forms by alteraion of other Mg-rich minerals, especially magnesite. In caves it sometimes forms a precipitation called “moonmilk.” This sample is 9 cm across. |
| Location | USA ▹ California ▹ Alameda County |
| Photographer | Darla Sondrol. 2001-06-13. |
| Collection | University of North Dakota Mineralogy Collection #676. |
| Key words | hydromagnesite, California |
| Tech details | 277 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 746 |
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