Crossword clues for realgar
The Collaborative International Dictionary
Realgar \Re*al"gar\ (r[-e]*[a^]l"g[~e]r), n. [F. r['e]algar, Sp. rejalgar, Ar. rahj al gh[=a]r powder of the mine.] (Min.) Arsenic sulphide, a mineral of a brilliant red color; red orpiment. It is also an artificial product.
Wiktionary
n. (context mineralogy English) A mineral, arsenic sulfide (arsenicsulfur), often associated with orpiment and stibnite in lead, silver and gold ores.
WordNet
n. a rare soft orange mineral consisting of arsenic sulphide; an important ore of arsenic
Wikipedia
Realgar, α-AsS, is an arsenic sulfide mineral, also known as "ruby sulphur" or "ruby of arsenic". It is a soft, sectile mineral occurring in monoclinic crystals, or in granular, compact, or powdery form, often in association with the related mineral, orpiment (AsS). It is orange-red in color, melts at 320 °C, and burns with a bluish flame releasing fumes of arsenic and sulfur. Realgar is soft with a Mohs hardness of 1.5 to 2 and has a specific gravity of 3.5. Its streak is orange colored. It is trimorphous with alacranite and pararealgar. Its name comes from the Arabic rahj al-ġār (, "powder of the mine"), via Catalan and Medieval Latin, and its earliest record in English is in the 1390s.
Usage examples of "realgar".
Alkali, salt, potassium carbonate, And our burnt matters, and coagulate, Clay mixed with horses' or men's hair, and oil Of tartar, alum, glass, yeast, wort, argoil, Realgar, and our matters absorbent, And with them, too, our matters resorbent, And how we practised silver citrination And our cementing and our fermentation, Our moulds and testers, aye, and many more.
XXIX REALGAR ELIXIR REALGAR (Arabic rehj al-ghar, 'Powder of the Cave', Chinese xionghuang, 'Male Yellow', the mineral disulphide of arsenic) was a substance much used in traditional Chinese and Indian medicine.