Marcasite Photos  
Cochise College               
Photos of Minerals
Geology Home Page

Roger Weller, geology instructor     copyright 2010-R.Weller 

marcasite disk
Marcasite is also known as a white iron pyrite because its color on a fresh surface
is more pale than the brassy yellow of pyrite.  This circular structure is known as a
marcasite disk ; it is created when the marcasite crystallizes between tight layers
of shale.


marcasite                                                                                                                                         2
Photo is copyright free only for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.