3:13

George the Geologist - Blueschist

18:14

Rock Identification with Willsey: Intrusive Igneous Rocks (granite, granodiorite, diorite, gabbro)

2:23

George the Geologist - Folded Rocks

40:24

Gold Expert Reveals What GOLD Looks Like in Ore Rocks

6:30

Mineral : Phyllosilicates - Serpentine

2:39

Mineral Spotlight - Serpentine

21:41

Rock Identification with Willsey: Foliated Metamorphic Rocks - Slate, Phyllite, Schist, and Gneiss

12:10

Quartz vs. Quartzite