Right. I’m not ready with the big Quartzville riddle, so here’s a small one from Marys Peak instead. Hopefully, you all will enjoy it as much as the last one.
I’m a well-rounded rock.
I’m something of a chameleon. At a glance, I look like something I’m not. And I’m heavier than I look.
I sparkle now: once, I glowed.
I give road cuts an almost pillowy appearance, but you wouldn’t want to rest your head on me.
You just can’t assume anything about me.
What am I, and how did I form?