Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
Large masses of probably several mambers of the eudialyte group was found in Jan. 2008. Most of the material looked very much like ferrokentbrooksite from other localities in the area. Other parts where much lighter, perhaps a kentbrooksite?