Is this pyrite disease?
Hi guys I recently found this nice sized Pholadomorpha pholadoformis at the Humber River in Etobicoke, Ontario. It belongs to the Georgian Bay formation and is late Ordovician in age. The specimen has pyrite in addition to the black film. Does this fossil have some sort of pyrite disease to it?
As I read this thread I begin to believe that some folks are misunderstanding "pyrite disease". It is not pyrite attacking a fossil specimen, but a specimen that is composed of a large percentage of pyrite literally turning into powder (extreme case scenario) as the iron sulfide reacts with the environment and changes composition. It is the pyrite itself that is the victim of the "disease", which may destroy any specimen with a great degree of pyratization.
Pyrite Oxidation: Review a
