07811 - Slender Grass Green Epidote Crystals on Matrix Imilchil Mine Morocco Dinosaur Egg Shells Acastocephala

Acastocephala

Rare bone belonging to the foot of an unidentified crocodile

Chondrichthyes - Hybodontiformes - Hybodontidae

Tooth 6: 40 mm (1

it is under study

07811 - Slender Grass Green Epidote Crystals on Matrix Imilchil Mine Morocco Dinosaur Egg Shells AcastocephalaWell developed crystals of epidote, Ca2Al2(Fe3+; Al)(SiO4)(Si2O7)O(OH), crystallizing in the monoclinic system, are of frequent occurrence: they are commonly prismatic in habit, the direction of elongation being perpendicular to the single plane of symmetry. The faces are often deeply striated and crystals are often twinned. Many of the characters of the mineral vary with the amount of iron present for instance, the color, the optical constants, and