Difference between revisions of "Diopside"
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[[[SliderGallery rightalign|DIOPSIDE PMA.TIF~FTIR (PMA)|Diopsideitaly1.jpg~Raman]]] | [[[SliderGallery rightalign|DIOPSIDE PMA.TIF~FTIR (PMA)|Diopsideitaly1.jpg~Raman]]] | ||
| − | == | + | ==Physical and Chemical Properties== |
| − | Monoclinic system with slender square or octagonal prisms that are often twinned. Cleavage occurs at intersecting angles of 87 and 93 degrees although fracture is usually uneven. | + | * Monoclinic system with slender square or octagonal prisms that are often twinned. |
| − | + | * Cleavage occurs at intersecting angles of 87 and 93 degrees although fracture is usually uneven. | |
| − | Luster = vitreous to dull. Streak = white, gray or green | + | * Luster = vitreous to dull. |
| + | * Streak = white, gray or green | ||
{| class="wikitable" | {| class="wikitable" | ||
| Line 25: | Line 26: | ||
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 3.2-3.6 | + | | 3.2-3.6 g/ml |
|- | |- | ||
! scope="row"| Refractive Index | ! scope="row"| Refractive Index | ||
| Line 31: | Line 32: | ||
|} | |} | ||
| − | == | + | ==Resources and Citations== |
| − | |||
| − | |||
| − | + | * Mineralogy Database: [http://www.webmineral.com/data/Diopside.shtml Diopside] | |
* Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992 | * Robert Fournier, ''Illustrated Dictionary of Practical Pottery'', Chilton Book Company, Radnor, PA, 1992 | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "diopside" | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "diopside" [Accessed December 4, 2001]. (tech info) |
* 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/Diopside (Accessed Sept. 7, 2005) |
* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | * ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | ||
Revision as of 15:51, 21 July 2022
Description
A green, calcium magnesium silicate mineral sometimes used as a Gemstone. Diopside is a Pyroxene type mineral with short, monoclinic crystals. The transparent to translucent crystals have either a square or octagonal cross section. The color of diopside crystals ranges from light to dark green. Diopside has been found at many locations throughout Europe (Russia, Finland, Sweden, Switzerland and Italy), Canada (Ontario, Quebec) and the United States (New York, California and Maine). Powdered diopside is used as a matting agent in ceramic glazes.
Synonyms and Related Terms
calcium magnesium silicate; diopside (Fr.); diópsido (Esp., Port.); Diposid (Deut.); diopsiet (Ned.)
Physical and Chemical Properties
- Monoclinic system with slender square or octagonal prisms that are often twinned.
- Cleavage occurs at intersecting angles of 87 and 93 degrees although fracture is usually uneven.
- Luster = vitreous to dull.
- Streak = white, gray or green
| Composition | CaMgSi2O6 |
|---|---|
| Mohs Hardness | 5.0 - 6.5 |
| Density | 3.2-3.6 g/ml |
| Refractive Index | 1.66-1.76 |
Resources and Citations
- Mineralogy Database: Diopside
- Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
- Encyclopedia Britannica, http://www.britannica.com Comment: "diopside" [Accessed December 4, 2001]. (tech info)
- 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/Diopside (Accessed Sept. 7, 2005)
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998