|
Search over 100 encyclopedias and dictionaries: |
Research categories | Follow us on Twitter |
Research categories
View all topics in the newsView all reference sources at Encyclopedia.com |
|||
galena
galena or lead glance, lustrous, blue-gray mineral crystallizing usually in cubes, sometimes in octahedrons. It is the most important ore and the principal source of lead. It consists of lead sulfide, PbS, but frequently contains silver (it is mined for this metal in some localities) and other accessory metals. It is widely distributed throughout the world, occurring in veins and in bedded deposits, in Missouri, Idaho, Iowa, Wisconsin, and Utah in the United States (leading producer of lead) and in Australia, Canada, England, France, and Mexico. Galena crystals were once much used in radio "crystal" sets. |
|
|
Cite this article
"galena." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "galena." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1E1-galena.html "galena." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-galena.html |
|
galena
galena Mineral, PbS; sp. gr. 7.4–7.6; hardness 2.5; cubic; lead-grey; lead-grey streak; metallic lustre; crystals cubes or octahedra, and often octahedral twins; cleavage perfect cubic {100}; widely distributed in hydrothermal veins and syngenetic exhalative deposits and as a replacement in limestones and dolomitic rocks, associated in veins with sphalerite, pyrite, chalcopyrite, barite, quartz, fluorite, and calcite.
|
|
|
Cite this article
AILSA ALLABY and MICHAEL ALLABY. "galena." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "galena." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O13-galena.html AILSA ALLABY and MICHAEL ALLABY. "galena." A Dictionary of Earth Sciences. 1999. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-galena.html |
|
galena
galena (lead sulphide, PbS) Grey metallic mineral, major ore of lead. It is found in hydrothermal veins and as a replacement in limestone and dolomite rocks. Hardness 2.5–2.7; r.d. 7.5.
|
|
|
Cite this article
"galena." World Encyclopedia. 2005. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "galena." World Encyclopedia. 2005. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O142-galena.html "galena." World Encyclopedia. 2005. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-galena.html |
|
galena
galena lead ore. XVII. — L.
|
|
|
Cite this article
T. F. HOAD. "galena." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "galena." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O27-galena.html T. F. HOAD. "galena." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-galena.html |
|
galena
galena
•abstainer, arcana, campaigner, Cana, caner, cantilena, complainer, container, detainer, drainer, entertainer, explainer, Gaenor, gainer, Gaynor, grainer, Jena, Lena, maintainer, Marlene, N'Djamena, obtainer, ordainer, planar, planer, profaner, Rayner, retainer, scena, seiner, Sinn Feiner, strainer, sustainer, trainer, uniplanar
•straightener
•Adelina, Angelina, arena, Argentina, ballerina, Ballymena, Bettina, Bukovina, Burkina, cantina, Cartagena, casuarina, catena, Christina, cleaner, concertina, congener, contravener, convener, Cortina, demeanour (US demeanor), deus ex machina, duodena, Edwina, Ena, farina, Filipina, galena, Georgina, Gina, gleaner, hyena, Ina, intervener, kachina, kina, Magdalena, marina, Martina, Medina, Messalina, Messina, misdemeanour (US misdemeanor), Nina, novena, ocarina, Palestrina, Pasadena, Philomena, piscina, retsina, Rowena, Sabrina, scarlatina, screener, Selina, semolina, Seraphina, Serena, Sheena, signorina, sonatina, subpoena, Taormina, tsarina, verbena, vina, weaner, wiener, Wilhelmina, Zena
•sweetener • pipecleaner
|
|
|
Cite this article
"galena." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 11 Feb. 2012 <http://www.encyclopedia.com>. "galena." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 11, 2012). http://www.encyclopedia.com/doc/1O233-galena.html "galena." Oxford Dictionary of Rhymes. 2007. Retrieved February 11, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-galena.html |
|