I wonder what kind of rock this is? The blacker bits are between 10-20 mm in size. It almost looks like a sort of…

I wonder what kind of rock this is? The blacker bits are between 10-20 mm in size. It almost looks like a sort of impact breccia – but is it?

One thought on “I wonder what kind of rock this is? The blacker bits are between 10-20 mm in size. It almost looks like a sort of…


  1. The darker bits look to be full of tiny fractures. I was hoping fossils at first glance, but I could this being from an impact or eruption.


    Maybe fossilized mud and charcoal from an ancient forest fire?