Illinois Fluorite: The Illinois-Kentucky Fluorspar District (IKFD)
25:17
A Gigantic and Mysterious Feature that Nobody has Heard of!
59:07
Steve Garwin - The relationships between mineralization, hydrothermal alteration & magmatic conditio
23:08
Unboxing FLUORESCENT Fluorite
29:18
Mining topaz and aquamarine and building a mountain road | Mt. Antero Treasures S4:E1
1:00:49
The North American Craton: its tectonic growth and mineral endowment - Patrick Rowe
1:38:30
Geology of Illinois - Zoom Webinar
28:20
Rock Identification with Willsey: Intro to Igneous Rocks!
48:34