... also known as verde antique or opicalcite, but non- breccia ted. The rock usually forms from hydrothermal alteration of ultrabasic ...
Ed FitzGerald - 2015-09-05
... an inner beneath the unconformably overlying basic lithic breccia and tuff of the uppervolcanic unit. Note the argillite fragment ...
Raven Mueller - 2015-08-12