Difference between revisions of "Pyrope"
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[[[SliderGallery rightalign|pyrope.jpg~Raman]]] | [[[SliderGallery rightalign|pyrope.jpg~Raman]]] | ||
| − | == | + | ==Physical and Chemical Properties== |
| − | Fracture = conchoidal | + | * Fracture = conchoidal |
| − | + | * Luster = vitreous to resinous | |
| − | + | * Streak = colorless to white | |
| − | + | * Birefringence = isotropic | |
| − | + | * Pleochroism = none | |
| − | + | * UV fluorescence = inert. | |
| − | + | * Composition = 3MgO-Al2O3-3SiO2 | |
| − | + | * Mohs Hardness = 7.0 - 7.5 | |
| − | + | * Density = 3.78 g/ml | |
| − | + | * Refractive Index = 1.714-1.742 | |
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== Comparisons == | == Comparisons == | ||
| Line 37: | Line 27: | ||
[[media:download_file_458.pdf|Properties of Common Gemstones]] | [[media:download_file_458.pdf|Properties of Common Gemstones]] | ||
| − | + | ==Resources and Citations== | |
| − | + | * Mineralogy Database: [http://www.webmineral.com/data/Pyrope.shtml Pyrope] | |
| − | == | ||
| − | |||
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 354 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 354 | ||
* Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982 | * Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982 | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "pyrope." | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "pyrope." Accessed 14 Sept. 2001 . |
* 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/Pyrope (Accessed Sept. 14, 2005) |
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | * ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | ||
Revision as of 11:36, 20 August 2022
Description
A transparent, ruby-red Garnet composed of magnesium aluminum silicate where the magnesium is partially replaced with calcium and iron. The color of pyrope ranges from a deep red to almost black. Gemstone quality pyropes are mined in the Czech Republic, South Africa, and Australia.
Synonyms and Related Terms
garnet; Cape ruby; Bohemian garnet; rhodolite (violet); piropo (Esp., Port.); Pyrop (Deut.); pyroop (Ned.)
Physical and Chemical Properties
- Fracture = conchoidal
- Luster = vitreous to resinous
- Streak = colorless to white
- Birefringence = isotropic
- Pleochroism = none
- UV fluorescence = inert.
- Composition = 3MgO-Al2O3-3SiO2
- Mohs Hardness = 7.0 - 7.5
- Density = 3.78 g/ml
- Refractive Index = 1.714-1.742
Comparisons
Properties of Common Gemstones
Resources and Citations
- Mineralogy Database: Pyrope
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 354
- Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
- Encyclopedia Britannica, http://www.britannica.com Comment: "pyrope." Accessed 14 Sept. 2001 .
- 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/Pyrope (Accessed Sept. 14, 2005)
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998