American Heritage® Dictionary of the English Language, Fourth Edition
- n. A usually black or banded, hard volcanic glass that displays shiny, curved surfaces when fractured and is formed by rapid cooling of lava.
Century Dictionary and Cyclopedia
- n. A volcanic rock, in a vitreous condition, and closely resembling ordinary bottle-glass in appearance and texture. Obsidian usually contains about 70 per cent. of silica, and is the vitreous form of a trachyte or rock consisting largely of sanidine. It is of various colors, black, brown, and grayish green being the most common. Obsidian often occurs in a coarsely cellular form, and passes into pumice. See cut under
GNU Webster's 1913
- n. (Min.) A kind of glass produced by volcanoes. It is usually of a black color, and opaque, except in thin splinters.
- n. acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces
- Latin obsidiānus, misreading of obsiānus (lapis), Obsian (stone), obsidian, after Obsius, a Roman who supposedly discovered it or a similar mineral. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Glass in the form of a volcanic residue such as obsidian is found in nature.”
“Esparza explained to us that the colors in obsidian come from traces of different minerals embedded in it.”
“I confess that I, too, had very little interest in obsidian until the day I walked into Don Eleno's obsidian workshop in the sleepy village of Navajas, located 30 kilometers southwest of Guadalajara.”
“Although most obsidian is black, a variety of colors can be found in the vast deposits of Jalisco, Mexico.”
Rainbow-obsidian hearts are among the most popular items sold by local artisans. Although most obsidian is black, a variety of colors can be found in the vast deposits of Jalisco, Mexico. © John Pint, 2009
“Although most obsidian is black, a variety of colors can be found in the vast deposits of Jalisco.”
“In this area of Jalisco, the typical country-workshop approach to shaping obsidian is dangerous.”
“The main obsidian mines were those of Zinapécuaro ( "obsidian place").”
“The early dentists used a drill-like device with a hard stone such as obsidian, which is capable of puncturing bone.”
“The sangre-de-indio obsidian is from a hill just outside Navajas," he told us, "but we trade with people as far away as La Lobera, a little town about 65 kilometers north of here.”
“| Reply im sure there’s groupies in front of your house. yelling things like “SHOW US YOUR GAY PHONE!!!” and “I WANNA HAVE OBSIDIAN’S BABY!!” but sadly youre married and obsidian is in colombia … call it poetic tragedy.”
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