>>1225157>Can anyone in the room tell me exactly what type of rock this is?Likely sedimentary, none of the faces look particuarly fresh, possibly a sandstone as stated previously.
Was it "in-situ", e.g. did you break it off an outcrop?, or pick it up off the ground?
Your pictures, while large, don't show grains and their boundaries in particular detail.
>What mountain I got it from?From one within the US I'd guess, given your flag.
>How old its age is?If it's from an orogenic belt, it likely predates it, not really indicative of exact age though.
A U/Pb age derived from a detrital zircon may reveal something about its source rock and deposition.
But knowing the mountain and source location would be more helpful for deriving the age.
