Difference between revisions of "Gahnite"
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== Authority == | == Authority == | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Gahnite." | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Gahnite." Encyclopædia Britannica. 2004. Encyclopædia Britannica Premium Service. 19 May 2004 . |
* Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Gahnite (Accessed Sept. 7, 2005) | * Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Gahnite (Accessed Sept. 7, 2005) | ||
Revision as of 06:30, 24 July 2013
Description
A dark green to black spinel mineral composed of zinc aluminum oxide. Gahnite was named after the Swedish mineralogist John Gottlieb Gahn. Specimens have been obtained in Sweden (Galun), Argentina (Cordoba),and several areas of the U.S. (Massachusetts, North Carolina, Arizona, Maine, New Jersey).
Synonyms and Related Terms
zinc spinel
Other Properties
Color = green, blue, brown or gey. Crystals= octahedral
| Composition | ZnAl2O4 |
|---|
Authority
- Encyclopedia Britannica, http://www.britannica.com Comment: "Gahnite." Encyclopædia Britannica. 2004. Encyclopædia Britannica Premium Service. 19 May 2004 .
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Gahnite (Accessed Sept. 7, 2005)
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998