Difference between revisions of "Wolframite"
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== Description == | == Description == | ||
| − | A metallic ore containing both iron tungstate and manganese tungstate. Wolframite occurs as veins in granite rocks. It is found in England (Cornwall), Spain, Portugal, Germany, Myanmar (formerly Burma), the Malay Peninsula, Australia and the U.S. (Colorado, New Mexico, Arizona, North Carolina). Similar tungstate minerals are | + | A metallic ore containing both iron tungstate and manganese tungstate. Wolframite occurs as veins in granite rocks. It is found in England (Cornwall), Spain, Portugal, Germany, Myanmar (formerly Burma), the Malay Peninsula, Australia and the U.S. (Colorado, New Mexico, Arizona, North Carolina). Similar tungstate minerals are hübnerite (manganese tungstate) and ferberite (iron tungstate). All three of these ores are used as a source of [http://cameo.mfa.org/materials/fullrecord.asp?name=tungsten tungsten]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | + | hübnerite; huebnerite; ferberite; Wolframit (Deut.); wolframita (Port.) | |
[[[SliderGallery rightalign|wolframiteRS.jpg~Raman]]] | [[[SliderGallery rightalign|wolframiteRS.jpg~Raman]]] | ||
| Line 29: | Line 29: | ||
== Authority == | == Authority == | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "wolframite" | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "wolframite" Encyclopædia Britannica [Accessed December 4, 2001]. : Mohs = 5-5.5 |
| − | * | + | * C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979 Comment: Mohs 4-4.5 |
* Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Wolframite (Accessed Sept. 20, 2005) Mohs = 4-4.5 | * Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Wolframite (Accessed Sept. 20, 2005) Mohs = 4-4.5 | ||
Revision as of 07:24, 24 July 2013
Description
A metallic ore containing both iron tungstate and manganese tungstate. Wolframite occurs as veins in granite rocks. It is found in England (Cornwall), Spain, Portugal, Germany, Myanmar (formerly Burma), the Malay Peninsula, Australia and the U.S. (Colorado, New Mexico, Arizona, North Carolina). Similar tungstate minerals are hübnerite (manganese tungstate) and ferberite (iron tungstate). All three of these ores are used as a source of tungsten.
Synonyms and Related Terms
hübnerite; huebnerite; ferberite; Wolframit (Deut.); wolframita (Port.)
Other Properties
Crystals = prismatic:short, striated, and flattened. Fracture = uneven. Streak = gray or black. Luster = metallic to submetallic. Cleavage = perfect (lengthwise)
| Mohs Hardness | 4.0-4.5 |
|---|---|
| Density | 7.12-7.51 |
Additional Information
Mineralogy Database: Wolframite
Authority
- Encyclopedia Britannica, http://www.britannica.com Comment: "wolframite" Encyclopædia Britannica [Accessed December 4, 2001]. : Mohs = 5-5.5
- C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979 Comment: Mohs 4-4.5
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Wolframite (Accessed Sept. 20, 2005) Mohs = 4-4.5