Scattered grains of pyrrhotite, chalcopyrite, pyrite and cubanite also occur.
Occasionally it contains pods (greater than 1 cm) of black sandstone enriched in carbon and pyrite.
Some samples contain trace amounts of pyrite and chalcopyrite.
The palynomorphs are, in general, poorly preserved, moderately carbonized, brown to dark brown, and often pyrite-impregnated.
The inlays of the lateral incisors are of greenstone, while those of the canines are of pyrite.
Only bed 31g yielded pyrite framboids in this section.
However, pyrite framboid data indicate variation in the intensity of oxygen restriction.
Studies of ancient sediments reveal pyrite framboid analyses can additionally provide a subtle indicator of environmental stability.
