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It is formed by precipitation from hydrothermal fluids, and contains by mass: 16.3% Tl, 47.3% Cu, 2.9% Ag, and 33.6% Se. [2] Crookesite is an opaque, bluish grey to pink toned brown metallic mineral crystallizing in the tetragonal system. It has a Mohs hardness of 2.5 to 3 and a specific gravity of 6.9.
Inorganic Crystal Structure Database (ICSD) is a chemical database founded in 1978 by Günter Bergerhoff at the University of Bonn in Germany and I. D. Brown at McMaster University in Canada. [1][2] It is now produced by FIZ Karlsruhe in Europe and the U.S. National Institute of Standards and Technology. It seeks to contain information on all ...
The Crystallography Open Database (COD) is a database of crystal structures. [1] Unlike similar crystallographic databases, the database is entirely open-access, with registered users able to contribute published and unpublished structures of small molecules and small to medium-sized unit cell crystals to the database.
We're seeing The Ville cross-promotional train really pick up speed on Facebook now, as CastleVille players are now being offered free Exploration Crystals for playing the Ville on Facebook. To be ...
The action of crystal growth yields a crystalline solid whose atoms or molecules are close packed, with fixed positions in space relative to each other. The crystalline state of matter is characterized by a distinct structural rigidity and very high resistance to deformation (i.e. changes of shape and/or volume).
Mercury is a freeware developed by the Cambridge Crystallographic Data Centre, originally designed as a crystal structure visualization tool. Mercury helps three dimensional visualization of crystal structure and assists in drawing and analysis of crystal packing and intermolecular interactions. [ 1] Current version Mercury can read "cif ...
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The second campaign of the Dungeons & Dragons web series Critical Role premiered on January 11, 2018—four months after the conclusion of the first campaign —and concluded on June 3, 2021. [1][2][3] The series starred Travis Willingham, Marisha Ray, Taliesin Jaffe, Ashley Johnson, Sam Riegel, Liam O'Brien, and Laura Bailey as the players ...