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Realgar (/ r i ˈ æ l ɡ ɑːr,-ɡ ər / ree-AL-gar, -gər), also known as arsenic blende, ruby sulphur or ruby of arsenic, is an arsenic sulfide mineral with the chemical formula α-As 4 S 4. It is a soft, sectile mineral occurring in monoclinic crystals, or in granular, compact, or powdery form, often in association with the related ...
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Qajar art was the architecture, paintings, and other art forms produced under the Qajar dynasty, from 1781 to 1925, in Iran . The boom in artistic expression that occurred during the Qajar era was a side effect of the period of relative peace that accompanied the rule of Agha Mohammad Khan and his descendants.
Orpiment and realgar are closely related minerals and are often categorized in the same group. They are both arsenic sulfides and belong to the monoclinic crystal system. They are found in the same deposits and can form in the same geologic environments. As a result, Orpiment and realgar share similar physical properties and histories of use by ...
Pardon the dust. Workers are unpacking over 200 years of local history for a new museum downtown. The Akron History Center at 172 S. Main St. is a blur of activity. Crews are busy installing 20 ...
In the 18th century, painting restoration became a separate profession in France. 1735 to 1820, Restoration of paintings in the Spanish royal collections following a 1734 fire. Hundreds of important paintings were methodically treated in a specially constructed studio; materials used have been documented by Zahira Véliz.
Henry Clay Frick was a coke and steel magnate. [4] [5] As early as 1870, he had hung pictures throughout his house in Broadford, Pennsylvania. [6]Frick acquired the first painting in his permanent collection, Luis Jiménez's In the Louvre, in 1880, [7] after moving to Pittsburgh. [6]
Vincent van Gogh's painting, "Self Portrait with a Straw Hat," is displayed at "Vincent van Gogh: The Drawings" during a press preview at the Metropolitan Museum of Art in New York City in 2005.