Bunch of blue glass from the Molalla River, Clackamas County, Oregon. January 2nd 2017.
Not sure why there was so much of this, but the private trail I accidentally trespassed on was basically paved with huge chunks of the stuff.
Rare Earth
@rrareearthh / rrareearthh.tumblr.com
Mostly my own rock collection, plus geology, archaeology, nature, and probably your rockhounding photos, brought to you by @selfishsteam. The 10p coin I use for size reference is the size of an American quarter.