This Struthiomimus dinosaur fossil was found near Glendive, MT, and is part of the building full of rocks, gems and other earthly items in the 79th Annual Northwest Mineral Federation Show in Hamilton.

The Bitterroot Gem and Mineral Society is hosting the three-day event at the Ravalli County Fairgrounds, including all sorts of displays of mineralogy, paleontology, lapidary, faceting and more.

Speakers will be talking about sapphires, dinosaurs and woolly mammoths this weekend.

The show opened Friday and will run from 10 a.m. to 6 p.m. Saturday and 10 a.m. to 4 p.m. Sunday. There's a $3 admission charge for each day.

The Northwest Federation will have their annual meeting at the Bitterroot River Inn Friday evening and an Awards banquet Saturday evening, also at the Bitterroot River Inn.