Minerals, Rocks, and Gemstones
Audio quality is in very rough shape for this film because the source tape was not stored properly. However, a large number of viewers have expressed a degree of nostalgia in watching these old geoscience videos so I'll post those that I think have some educational or historical value despite the poor audio quality (which really affects the music more than anything).
This is a vintage educational video that covers minerals, mineral properties, basic geochemistry, rocks, and gemstones.