went digging for a few hours yesterday,not much but a couple brokes,and kasey found this piece of quartz in question.......the lines do not appear to go all the way through.Which is why we believe they are not natural.Has anyone seen a piece of incised quartz?
we have also found a few quartz grindstones in near by middens,which shows they have worked other pieces.
I would guess for man made because they go across what appears to be a very definite "stacked" structure. Its such a fractured looking rock, why would the guy have wasted his time on it? Maybe just ancient doodling
Folks have been attracted to and have picked up calcite crystals for as long as there have been folks and crystals for them to pick up. You are not the first folks to own and admire that piece................Sometime in the future, on a cold winter night with the wind blowing; think about those folks, how they lived, what they ate and where would they be on a cold winter's night.