Swakane Biotite Gneiss
21:41
Rock Identification with Willsey: Foliated Metamorphic Rocks - Slate, Phyllite, Schist, and Gneiss
56:48
Slate Peak with Ralph Haugerud
6:34
17) Micas and Clays
41:43
Napeequa Schist and Entiat Pluton
32:38
Northrup Canyon Granite
18:01
Slab Saw Advice // Tip & Tricks to Cutting Rocks
27:45
Central Oregon: Crooked River Area
20:33