No Voice / No Music Hardcore 2-65 Finishing the Library Foundation

During the last stream, I started excavating the library foundation. Here, I finished the foundation. Geological factoid: Minerals are, for the most part, not a single perfect category of chemical compositions. For example, pyrite which is made of sulfure and iron (FeS2), can vary from it's base formula with impurities. One could say, after chemical analysis, that an analysed rock or mineral sample is pyrite with 2ppm oxygen and 0.8ppm copper, but that's a mouthful, and absolute pure minerals don't exist in a practical sense. Next Video: