22212 - Beautiful 142.4 in Quartz Crystals in Natural Matrix - Imilchil (Morocco) Nenoticidaris mercieri Genus : Mosasaurus Conybeare

Genus : Mosasaurus Conybeare

If the meteor is able to achieve stable flight rather than tumbling sporadically

this taxon was classified as Plesiosaurus mauritanicus

This is a nice trilobite specimens natural association of 2 Crotocephalina

Large crystals are dark blue

22212 - Beautiful 142.4 in Quartz Crystals in Natural Matrix - Imilchil (Morocco) Nenoticidaris mercieri Genus : Mosasaurus ConybeareQuartz 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.