Mineral ID Day
1 pm – 4 pm · Mines Museum of Earth Science
Family
A free Halloween afternoon at the Colorado School of Mines’ earth science museum, which bills it as a monster mash: a teal pumpkin trick-or-treat. The museum is in the General Research Lab building on Maple Street and is free to visit.
1 pm – 4 pm · Mines Museum of Earth Science
6 pm – 7:30 pm · Golden History Museum · $12; $5 for museum members
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Checked by James, October 7, 2026 against calendar.mines.edu. Times can change; the organizer’s page is the record. Report a correction · Know something opening or closing? Tell us