9:53

Mineral : Tectosilicates - Alkali Feldspars

24:19

Minerals with Willsey: Feldspars

8:03

Mineral Identification : Garnets

24:54

Mineralogy: Lecture 48, Feldspars

7:17

Minerals : Tectosilicates - Quartz

19:26

Minerals with Willsey: Olivine, Pyroxene, and Amphibole

19:04

Petoskey Stones - the life and times of Michigan's iconic state stone #fossil #michigan #geology

19:23

Stegosaurus - the dinosaur that didn't have two brains!!! #dinosaur #dinosaurs #paleontology