Wired magazine has the article The Ultra-Pure, Super-Secret Sand That Makes Your Phone Possible‘
It’s quartz, but not just any quartz. Spruce Pine, it turns out, is the source of the purest natural quartz—a species of pristine sand—ever found on Earth.
Having been involved in one way or another with silicon for all of my career, I thought this article was very interesting without being too overly hyped up except for, perhaps, the title.