TY - JOUR
TI - New Data on Fiedlerite-1A from Ancient Slags of Lavrion, Greece: Crystal Structure and Hydrogen Bonding
AU - Zubkova, N.V.
AU - Chukanov, N.V.
AU - Pekov, I.V.
AU - Pushcharovsky, D.Y.
AU - Katerinopoulos, A.
AU - Vuduris, P.
AU - Magganas, A.
JO - Doklady Earth Sciences
PY - 2019
VL - 486
TODO - 1
SP - 517-520
PB - PLEIADES PUBLISHING INC
SN - 1028-334X
TODO - 10.1134/S1028334X1905009X
TODO - Chlorine compounds;  Geometry;  Hydrogen;  Hydrogen bonds;  Lead compounds;  Single crystals;  Slags, IR spectrum;  Structural fragments;  Trigonal prisms;  Zigzag chains, Crystal structure, cation;  chemical bonding;  crystal chemistry;  crystal structure;  crystallography;  hydrogen;  mineral;  new record;  slag, Attica;  Greece;  Lavrion
TODO - Abstract: The crystal structure (R = 0.0750) of fiedlerite-1A Pb3Cl4F (OH) · H2O from ancient slags of Lavrion (Greece) was studied on a single crystal. The mineral is triclinic, a = 8.5741 (7) Å, b = 8.0480 (5) Å, c = 7.2695 (4) Å, α = 90.087 (5), β = 102.126 (6), γ = 103.424 (6)°, V = 476.37 (6) Å3, Z = 2. The Pb2+ cations center the Pb(1)F(H2O)Cl6, Pb(2)(OH)2FCl5, and Pb(3)(OH)F2Cl5 bicapped trigonal prisms. In the structure there is an additional position Pb', filled by 10% with Pb2+. There are two main structural fragments alternating along the a axis: (100) layers of Pb(2)- and Pb(3)-centred polyhedra and zigzag chains, stretched along the b axis formed by Pb(1)-centred polyhedra sharing common edges. The IR spectrum of fiederlite-1A is given. © 2019, Pleiades Publishing, Ltd.
ER -