RT @RSFireNerd@twitter.com

🪨❔ Okay #GeologistsOfTwitter, what is this? It looks like a glassy obsidian that has morphed into a turquoise-colored mineral. I find it in ground-up asphalt dropped and flattened over paths to create backcountry roads in Colorado.
#Geology #GeologyTwitter #Rocks #GeologyRocks

🐦🔗: https://twitter.com/RSFireNerd/status/1614012596671381508