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A Geoscience Digital Image Library

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TitlePumice, Millard County, Utah
DescriptionThis 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.
ChronostratigraphyTertiary
LocationUSA ▹ Utah ▹ Millard. Near Black Rock.
PhotographerJoseph Hartman. 2001-02-13.
CollectionWard’s Collection of Classic North American Rocks #9.
Key wordspumice, Utah
Tech details674 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number50