Difference between revisions of "Rhyolite"
Jump to navigation
Jump to search
(username removed) |
|||
| (3 intermediate revisions by 2 users not shown) | |||
| Line 2: | Line 2: | ||
== Description == | == Description == | ||
| − | A general term for a group of fine-grain, often glassy, volcanic rocks. Rhyolites contain [ | + | A general term for a group of fine-grain, often glassy, volcanic rocks. Rhyolites contain [[quartz|quartz]] and [[feldspar|feldspar]] and are compositionally similar to [[granite|granite]]. They occur in [[lava|lava]] and often exhibit flow lines, spheroids, and nodular structures. [[Obsidian|Obsidian]] is a type of rhyolite. [[Pumice|Pumice]] is a very porous, brittle, lightweight variety of rhyolite. |
[[File:Rhyolite_USGS.jpg|thumb|Rhyolite]] | [[File:Rhyolite_USGS.jpg|thumb|Rhyolite]] | ||
| + | [[File:rhyoliteflowlarge.jpg|thumb|Rhyolite]] | ||
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Rhyolith (Deut.); rhyolite (Fr.); ryolit (Pol., Sven.); riolit (Pol.); | Rhyolith (Deut.); rhyolite (Fr.); ryolit (Pol., Sven.); riolit (Pol.); | ||
| + | == Physical and Chemical Properties == | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
| Line 15: | Line 17: | ||
|} | |} | ||
| − | == | + | ==Resources and Citations== |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
* 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 | ||
| Line 28: | Line 23: | ||
* 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/Rhyolite (Accessed Nov. 9, 2005) |
* Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997 | * Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997 | ||
Latest revision as of 08:14, 28 August 2020
Description
A general term for a group of fine-grain, often glassy, volcanic rocks. Rhyolites contain Quartz and Feldspar and are compositionally similar to Granite. They occur in Lava and often exhibit flow lines, spheroids, and nodular structures. Obsidian is a type of rhyolite. Pumice is a very porous, brittle, lightweight variety of rhyolite.
Synonyms and Related Terms
Rhyolith (Deut.); rhyolite (Fr.); ryolit (Pol., Sven.); riolit (Pol.);
Physical and Chemical Properties
| Mohs Hardness | 6-6.5 |
|---|
Resources and Citations
- Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
- 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/Rhyolite (Accessed Nov. 9, 2005)
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998