crystal class
81Malayaite — General Category Silicate mineral Chemical formula CaSnO[SiO4] Crystal symmetry Monoclinic prismatic (2/m) Unit cell a = 7.15 Å, b = 8.90 Å, c …
82Crystallographic point group — In crystallography, a crystallographic point group is a set of symmetry operations, like rotations or reflections, that leave a central point fixed while moving other directions and faces of the crystal to the positions of features of the same… …
83Chalcophyllite — from the Ting Tang Mine, Carharrack, Cornwall, England. Photo by Rob Lavinsky General Category Arsenate minerals …
84Djurleite — pseudomorph after pyrite from New Mexico, specimen size 2.4 cm General Category Copper sulfide …
85Dickite — General Category Phyllosilicate Chemical formula Al2Si2O5(OH)4 Strunz classification 09.ED.05 Dana classification …
86Neodymium-doped yttrium orthovanadate — Nd:YVO4 in a frequency doubled green laser pointer. Internal construction is shown. AAA type cells and electronics lead to a laser module (enlarged in lower diagram). This contains a powerful 808 nm IR diode laser that pumps a Nd:YVO4 laser… …
87Cornubite — from Majuba Hill, Nevada, USA. Specimen size 5 cm General Category Arsenate minerals Chemical …
88Sarabauite — General Category Sulfide mineral Chemical formula CaSb10O10S6 Strunz classification 02.MA.10 Crystal …
89Devilline — General Category Sulfate minerals Chemical formula CaCu4(SO4)2(OH)6·3(H2O) Strunz classification 07.DD.30 …
90Pearson symbol — The Pearson symbol, or Pearson notation, is used in crystallography as a means of describing a crystal structure, and was originated by W.B Pearson [ W.B. Pearson, A Handbook of Lattice Spacings and Structures of Metals and Alloys,Vol. 2,… …
