22409 - Well Preserved Pyritized 0.87 Inch Unidentified Lower Cretaceous Ammonites Primitive tools 0 mm for pyroxene
Yard notes & kiln story
Description
0 mm for pyroxene
The Mohs scale of mineral hardness
1344 g at MNHNP (two stones of 694 and 650 g)
a large eccentric and recurved apical nubbin
1 Classifier: L
22409 - Well Preserved Pyritized 0.87 Inch Unidentified Lower Cretaceous Ammonites Primitive tools 0 mm for pyroxeneUnidentified species. His suture lines are wonderfully well detailed. It is naturally pyritized. It has undergone a taphonomic process of permineralization in Iron Sulfide (Pyrite). Permineralization is a process of fossilization in which mineral deposits form internal casts of organisms.