Nick Crane "there IS somebody out there!" ~ 11/21/13 Today I'm grateful for books on the constellations and resources that I can use to teach my children about them. We've really enjoyed our study on the stars!
Calcite with quartz from Huanggang Mine, Inner Mongolia, China. The pictured specimen is 7cm tall. The quartz at the center of the stacked calcite disks is better exposed in some of the specimens that they have at the show. Photo credit: Jeffrey A. S