SWJ0128 - Premium Grade Clear Quartz Crystal Cluster from classical Arkansas (USA) location Crotalocephalina This specimen is absolutely unique

This specimen is absolutely unique and worthy of new comparative studies with the already published rests

The subadult holotype specimen is estimated to have been around 13 m (43 ft) in length

while the Strunz classification scheme lists it as a tectosilicate

This partial jaw was broken in small sector during the initial collecting efforts but all parts were put back together and there is no restoration and no fabrication

Schultz 1974

SWJ0128 - Premium Grade Clear Quartz Crystal Cluster from classical Arkansas (USA) location Crotalocephalina This specimen is absolutely uniqueThis is a gorgeous clear quartz crystal cluster that was collected from the classical Arkansas location. Top quality cluster. Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 siliconoxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. There are many different