Hexagonal Prism First Order Small 234×320 Medium 468×640 Large 748×1024 Download Tiff Original 1754×2400 | (387.1 KB) Description Principal forms of the hexagonal system: hexagonal prism Keywords forms, geology, hexagonal, hexagonal prism Galleries Prisms Source: Amadeus W. Grabau A Textbook of Geology (Boston: D.C. Heath & Co., 1920) 46
