Minerals with Willsey: Feldspars
24:49
Minerals with Willsey: Quartz
19:26
Minerals with Willsey: Olivine, Pyroxene, and Amphibole
24:54
Mineralogy: Lecture 48, Feldspars
19:17
Rock and Mineral Identification
19:16
Types and geometries of geologic folds
17:03
Hounding for Gorgeous Rose Quartz, Tourmaline, and Feldspar! Perusing Pegmatites in South Dakota!
12:06
What is Feldspar? A geologist explains!
18:38