Title | Pumice, Millard County, Utah |
Description | This specimen is composed of fine whitish glass and many vesicles. Microscope examination shows it to have a rather eveny texture with strong orientation of elongate glass particles intermixed with spheroidal and irregular turbid dark glass pieces. A few spherulites have crystallized. This sample is 11.5 cm across. |
Chronostratigraphy | Tertiary |
Location | USA ▹ Utah ▹ Millard. Near Black Rock. |
Photographer | Joseph Hartman. 2001-02-13. |
Collection | Ward’s Collection of Classic North American Rocks #9. |
Key words | pumice, Utah |
Tech details | 674 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
GeoDIL number | 50 |
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