| Occurrence and Genesis of Thunder Eggs Containing Plume and Moss Agate Downloaded by [Tufts University]...06:56 07 October 2014 from the Del Norte Area, Saguache County, Colorado DANIEL E. KILE U.S. Geological...Suite E-127 Boulder, Colorado 80303 dekile@usgs.gov Figure 1. View of the Del Norte area, showing Tertiary...nown since the late 1800s, the thunder-egg beds near Del Norte, Colorado, have provided the collector in...recent times with world-class plume and moss agate. Plume agate represents the ultimate in aesthetically |
