Search results for "Geode" - New World Encyclopedia

specimen, with a crystal-lined cavity, is called a geode. exceptional size. For instance, a Brazilian geode lined with amethyst and weighing ...

Amethyst is a violet or purple variety of quartz often used as an ornamental stone. The name comes from the Greek words a (not) and methuskein ...

and only one termination pyramid appears. A quartz geode consists of a hollow rock (usually with a roughly spherical shape) containing a core lined with ...

In chemistry and mineralogy, a crystal is defined as a solid in which the constituent atoms, molecules, or ions are packed in a regularly ordered ...

*Rock: Geode *Grass: Bluebunch wheatgrass *Tree: Oak }} The first settlers officially moved to Iowa in June 1833. On December 28, 1846, Iowa became ...