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steve  ·  3453 days ago  ·  link  ·    ·  parent  ·  post: A rock I found in the UP of Michigan.

I'm not a geologist, but I did stay in a Holiday Inn Express a year ago...

It looks like straight up quartz to me. The red/orange could be some iron inclusions, or maybe just some red/orange quartz. It comes in lots of colors.