Difference between revisions of "Luster"
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| − | + | '''Luster''' is the surface appearance of a substance, or the manner in which it reflects light. The luster of [[minerals]] varies with the nature of their surfaces. A variation in the quantity of light reflected produces different degrees of [[intensity]] of luster; a variation in the nature of the reflecting surface produces different kinds of luster. | |
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| + | '''Kinds of Luster''' - The kinds of luster recognized are as follows: | ||
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| + | [[Image:Mineral.jpg|right|thumb|200px|Non-metallic minerals of varying luster]] | ||
| + | #[[Metallic]] | ||
| + | #[[Sub-metallic]] | ||
| + | #[[Non-metallic]] | ||
| + | ::A. [[Adamantine]] | ||
| + | ::B. [[Vitreous luster|Vitreous]] | ||
| + | ::C. [[Resinous]] | ||
| + | ::D. [[Greasy]] | ||
| + | ::E. [[Pearly]] | ||
| + | ::F. [[Silky]] | ||
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| + | '''Degrees of Luster''' - The ''degrees of intensity'' of luster are classified as follows: | ||
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| + | #[[Splendent]] | ||
| + | #[[Shining]] | ||
| + | #[[Glistening]] | ||
| + | #[[Glimmering]] | ||
| + | #[[Dull luster|Dull]] | ||
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| + | ==Sources== | ||
| + | *Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987) | ||
| + | *Dana, Edward S. and Ford, William E. ''Dana's Textbook of Mineralogy - Fourth Edition'', John Wiley and Sons: New York (1932) | ||
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| + | ==External links== | ||
| + | *[http://www.galleries.com/minerals/property/luster.htm What is Luster?], ''Amethyst Galleries''. | ||
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| + | [[Category:Mineralogy]] | ||
Latest revision as of 17:23, January 24, 2010
Luster is the surface appearance of a substance, or the manner in which it reflects light. The luster of minerals varies with the nature of their surfaces. A variation in the quantity of light reflected produces different degrees of intensity of luster; a variation in the nature of the reflecting surface produces different kinds of luster.
Kinds of Luster - The kinds of luster recognized are as follows:
Degrees of Luster - The degrees of intensity of luster are classified as follows:
Sources
- Chesterman, Charles W. The Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf: New York (1987)
- Dana, Edward S. and Ford, William E. Dana's Textbook of Mineralogy - Fourth Edition, John Wiley and Sons: New York (1932)
External links
- What is Luster?, Amethyst Galleries.