Left-handed quartz Small 194×320 Medium 387×640 Large 620×1024 Download Tiff Original 1452×2400 | (343.9 KB) Description "The quartz crystals are said to be right or left handed, depending upon whether these faces are to be observed trunctuating the edges between prism and rhombohedron." — Ford, 1912 Keywords crystal, geology, geometry, hand, left, quartz Galleries Crystals Source: William E. Ford Dana's Manual of Mineralogy (New York: John Wiley and Sons, Inc, 1912) 46
