Amygdaloidal Minerals
 
 

The brightly colored minerals of the zeolite and prehnite-pumpellyite facies fill the vesicles of the Keweenawan lava flows. In many of these photos I used the expertise and great collection from the AE Seaman Mineralogical museum, foremost mineral museum in the midwest, and George Robinson, Bob Barron and John Jaszczak helped select samples and photograph them.

Amygdaloid

March 11, 2013