Difference between revisions of "Wolframite"
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[[[SliderGallery rightalign|wolframiteRS.jpg~Raman]]] | [[[SliderGallery rightalign|wolframiteRS.jpg~Raman]]] | ||
| − | == | + | ==Physical and Chemical Properties== |
| − | Crystals = prismatic:short, striated, and flattened. Fracture = uneven. Streak = gray or black. Luster = metallic to submetallic. Cleavage = perfect (lengthwise) | + | * Crystals = prismatic:short, striated, and flattened. |
| + | * Fracture = uneven. | ||
| + | * Streak = gray or black. | ||
| + | * Luster = metallic to submetallic. | ||
| + | * Cleavage = perfect (lengthwise) | ||
{| class="wikitable" | {| class="wikitable" | ||
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|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 7.12-7.51 | + | | 7.12-7.51 g/ml |
|} | |} | ||
| − | == | + | ==Resources and Citations== |
| − | Mineralogy Database: [http://www.webmineral.com/data/Wolframite.shtml Wolframite] | + | * Mineralogy Database: [http://www.webmineral.com/data/Wolframite.shtml Wolframite] |
| − | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "wolframite" [Accessed December 4, 2001]. : Mohs = 5-5.5 | |
| − | |||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "wolframite" | ||
* 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 | * 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 | + | * Wikipedia: http://en.wikipedia.org/wiki/Wolframite (Accessed Sept. 20, 2005) Mohs = 4-4.5 |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 10:45, 27 June 2022
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.)
Physical and Chemical 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 g/ml |
Resources and Citations
- Mineralogy Database: Wolframite
- Encyclopedia Britannica, http://www.britannica.com Comment: "wolframite" [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: http://en.wikipedia.org/wiki/Wolframite (Accessed Sept. 20, 2005) Mohs = 4-4.5