Hemi-macro Dome Small 320×281 Medium 640×562 Large 1024×899 Download Tiff Original 2400×2106 | (299.1 KB) Description Principal forms of the triclinic system: hemi-macro dome. Keywords geology, hemi-macro dome, triclinic forms Galleries Prisms Source: Amadeus W. Grabau A Textbook of Geology (Boston: D.C. Heath & Co., 1920) 48