17) Micas and Clays
11:27
18) Metamorphic Silicates
18:38
Minerals with Willsey: Micas
8:19
16) Olivine Pyroxene and Amphibole
10:14
22) Sulfide Minerals
7:51
21) Sulfate Minerals
14:46
Large Mica Books - Exploration For Pegmatite
9:32
Mineral Identification - Hardness
19:26