Pyramid Small 320×271 Medium 640×542 Large 1024×867 Download Tiff Original 2400×2031 | (320.6 KB) Description "An orthorhombic pyramid has eight triangular faces, each of which intersects all three of the crystallographic axes." — Ford, 1912 Keywords geology, geometry, orthorhombic, pyramid Galleries Pyramids Source: William E. Ford Dana's Manual of Mineralogy (New York: John Wiley and Sons, Inc, 1912) 47
