Difference between revisions of "Wavellite"
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[[File:pw20704wavellite.jpg|thumb|Wavellite]] | [[File:pw20704wavellite.jpg|thumb|Wavellite]] | ||
== Description == | == Description == | ||
| − | + | [[File:pw30434wavellite.jpg|thumb|Wavellite]] | |
A pale green color mineral composed of hydrous basic aluminum phosphate. Wavellite was named for its discoverer, William Wavell, an English physician. Significant wavellite depostis have been found in the Czech Republic (Zbiroh), France (Montebras), England (Barnstaple, Devon), Bolivia (Llallagua) and the U.S. (Florida, Arkansas, Pennsylvania, Colorado). It usually occurs as crusty, globular masses in hydrothermal veins. The transparent to translucent stone can be green, yellow, white, gray or brown. | A pale green color mineral composed of hydrous basic aluminum phosphate. Wavellite was named for its discoverer, William Wavell, an English physician. Significant wavellite depostis have been found in the Czech Republic (Zbiroh), France (Montebras), England (Barnstaple, Devon), Bolivia (Llallagua) and the U.S. (Florida, Arkansas, Pennsylvania, Colorado). It usually occurs as crusty, globular masses in hydrothermal veins. The transparent to translucent stone can be green, yellow, white, gray or brown. | ||
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[[[SliderGallery rightalign|wavelliteRS.jpg~Raman]]] | [[[SliderGallery rightalign|wavelliteRS.jpg~Raman]]] | ||
| − | == | + | ==Physical and Chemical Properties== |
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| − | Streak = white. Luster= pearly to vitreous. Fracture = conchoidal to uneven. | + | * Orthorhombic crystal system with rare striated prismatic crystals; more often globular or crusty. |
| + | * Cleavage perfect in one direction and good in one direction. | ||
| + | * Streak = white. | ||
| + | * Luster= pearly to vitreous. | ||
| + | * Fracture = conchoidal to uneven. | ||
{| class="wikitable" | {| class="wikitable" | ||
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! scope="row"| Density | ! scope="row"| Density | ||
| − | | 2.3-2.4 | + | | 2.3-2.4 g/ml |
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! scope="row"| Refractive Index | ! scope="row"| Refractive Index | ||
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| − | == | + | ==Resources and Citations== |
| − | + | * Mineralogy Database: [http://www.webmineral.com/data/Wavellite.shtml Wavellite] | |
| − | Mineralogy Database: [http://www.webmineral.com/data/Wavellite.shtml Wavellite] | ||
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| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "wavellite." | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "wavellite." accessed 13 Oct. 2004 . |
* C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979 | * C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979 | ||
| − | * Wikipedia | + | * Wikipedia: http://en.wikipedia.org/wiki/Wavellite (Accessed Sept. 20, 2005) |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 14:01, 26 June 2022
Description
A pale green color mineral composed of hydrous basic aluminum phosphate. Wavellite was named for its discoverer, William Wavell, an English physician. Significant wavellite depostis have been found in the Czech Republic (Zbiroh), France (Montebras), England (Barnstaple, Devon), Bolivia (Llallagua) and the U.S. (Florida, Arkansas, Pennsylvania, Colorado). It usually occurs as crusty, globular masses in hydrothermal veins. The transparent to translucent stone can be green, yellow, white, gray or brown.
Synonyms and Related Terms
aluminum phosphate
Physical and Chemical Properties
- Orthorhombic crystal system with rare striated prismatic crystals; more often globular or crusty.
- Cleavage perfect in one direction and good in one direction.
- Streak = white.
- Luster= pearly to vitreous.
- Fracture = conchoidal to uneven.
| Composition | Al3(PO4)2(OH)3-5H2O |
|---|---|
| Mohs Hardness | 3.5 - 4.0 |
| Density | 2.3-2.4 g/ml |
| Refractive Index | 1.52; 1.53; 1.55 |
Resources and Citations
- Mineralogy Database: Wavellite
- Encyclopedia Britannica, http://www.britannica.com Comment: "wavellite." accessed 13 Oct. 2004 .
- C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
- Wikipedia: http://en.wikipedia.org/wiki/Wavellite (Accessed Sept. 20, 2005)