Dull luster, with 2 main layers:
TOP) about 1 cm thick, plate-like, dark coffee brown, bubbly melty looking texture. The top layer is harder (about a 5, scratched with a knife) and the edges are abruptly broken into long gentle curves with very distinct edges. I cannot easily break off a piece.
BOTTOM) about 4 cm think at thickest point, pale orange "redrock", sandy texture, softer than the top (about a 3, scratched with a penny) and smoothly rounded. If any edges existed in the past on this bottom part they have been worn away. Pieces do not break off easily, but the bottom layer scratches more easily than the top.
Weight seems about what I'd expect for a rock this size, maybe slightly lighter?
I'm very curious about the mineral nature and appropriate name for this kind of rock, but also what the possible processes were that could have made this rock look like it's burnt on top, but still raw on the bottom?
I found the rock in Southern Utah Red Rock country somewhere, but unfortunately I no longer remember the exact site. It was something I just picked up from the ground as is. I don't think it was unique to other rocks around it. There were several in the area with this same texture / combination. Although, I don't think all the other rocks were loose like this one, some were still attached to the mountain.