30041 - Finest Grade Rare Dysplanus centrotus Lower Ordovician Trilobite Russia Chalcedonized Gastropods 7 Ferrosilite (mol%): 28
Yard notes & kiln story
Description
7 Ferrosilite (mol%): 28
Tabular brown hornblendes are in a mass of highly altered plagioclase
the other being bright green malachite
FeO/MnO = 44)
• Oligocene of United States (South Carolina)
30041 - Finest Grade Rare Dysplanus centrotus Lower Ordovician Trilobite Russia Chalcedonized Gastropods 7 Ferrosilite (mol%): 28Dysplanus centrotus (Dalman 1827) Lower Ordovician Wolhov river, Voybakokalo level St. Petersburg region, Russia