This figure shows an example of cyclic twinning on a crystal of Rutile.
George Huntington Williams, Ph.D. Elements of Crystallography for Students of Chemistry, Physics, and Mineralogy (New York, NY: Henry Holt and Company, 1892)
3596×2140, 722.1 KiB
1024×609, 56.6 KiB
640×380, 31.0 KiB
320×190, 13.1 KiB