Identifying Minerals -- Earth Rocks!
3:10
Identifying Minerals -- Addendum -- Earth Rocks!
22:33
Minerals with Willsey: Mineral Properties
16:52
Inside Minerals
20:17
Identifying Igneous Rocks -- Earth Rocks!
40:24
Gold Expert Reveals What GOLD Looks Like in Ore Rocks
25:49
The Basics of Mineral Identification
19:17
Rock Identification with Willsey: Nonfoliated Rocks - Quartzite and Marble
15:14