pattern (Topa et al. 2006). Stability in the two frameworks is created by the metal-metal bonds in the direction of [210]. These interconnect the metal atoms of one [010] layer of the zig-zag structure, as well as taking the Pd2 arrangement of both adjacent layers. The linear arrangement of these three layers creates stability for the creased angles of the Pd2 zig-zag pattern (Topa et al. 2006). The structures found in chrisstanleyite and jagueite appear to be different from that of any other mineral. Comparing these with other Pd and Pt sulfides and selenides, no relations have been found. The closest structure found was with KCuPdSe5, which also forms corrugated layers, but the diagonally stacked squares are only one polyhedron deep. Additionally, the distances of Pd-Cu structures are not that of metal-metal bonds. Topa et al. (2006) concluded that chrisstanleyite and jagueite are a new structure type lacking a sulfide counterpart. Special Characteristics A prominent feature chrisstanleyite has and shares with oosterboschite is that it has fine polysynthetic and parquet-like twinning. The difference between the two is that chrisstanleyite anisotropic rotation tints is much more colorful (Paar et al. 1998). Chrisstanleyite, also, forms a limited solid-solution with jagueite (Nickel 2002; Paar et al. 2004). Based on samples found in the Pilbara Region, the two minerals were both yellow and indistinguishable in reflected light and had weak bireflectance and moderate anisotropy (Nickel 2002). See also List of minerals List of minerals named after people Notes References http://www.mindat.org/user-8203.html#0 http://webmineral.com/data/Chrisstanleyite.shtml http://www.mindat.org/min-1028.html Nickel E.H. (2002): An unusual occurrence of Pd, Pt, Au, Ag, AND Hg Minerals in the Pilbara Region of Western Australia. The Canadian Mineralogist, 40, 419–433. Paar W.H., Roberts A.C., Criddle A.J., Topa D. (April 1998): A new mineral, chrisstanleyite, Ag2Pd3Se4, from Hope's Nose, Torquay, Devon, England. Mineralogical Magazine, 62(2), 257–264. Paar W.H., Topa D., Makovicky E., Sureda R.J., de Brodtkorb M.K., Nickel E.H., and Putz H. (2004): Jagueite, Cu2Pd3Se4, a new mineral species from El Chire, La Rioja, Argentina. The Canadian Mineralogist, 42: 1745–1755. Topa D., Makovicky E., Balic-Zunic T. (2006): The crystal structures of jagueite, Cu2Pd3Se4, and chrisstanleyite, Ag2Pd3Se4. The Canadian Mineralogist, 44, 497–505. Selenide minerals Silver minerals Palladium minerals Monoclinic minerals Minerals in space group 14