Difference between revisions of "Chert"
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== Additional Information == | == Additional Information == | ||
| − | B.Aston, J.Harrell, I.Shaw, "Stone" in ''Ancient Egyptian Materials and Technology'', P.Nicholson, I.Shaw (eds.), Cambridge University Press, 2000. | + | ° B.Aston, J.Harrell, I.Shaw, "Stone" in ''Ancient Egyptian Materials and Technology'', P.Nicholson, I.Shaw (eds.), Cambridge University Press, 2000. ° Mineralogy Database: [http://www.webmineral.com/data/Quartz.shtml Quartz] |
[[File:Chert_near.Eureka.jpg|thumb|Chert near Eureka Lake spillway]] | [[File:Chert_near.Eureka.jpg|thumb|Chert near Eureka Lake spillway]] | ||
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* ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996 | * ''Dictionary of Building Preservation'', Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996 | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "chert and flint" | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "chert and flint" Encyclopædia Britannica [Accessed January 22, 2002]. |
| − | * | + | * C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979 |
| − | * | + | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 690 |
| − | * | + | * 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 | * ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | ||
Revision as of 06:40, 24 July 2013
Description
An opaque, white to light-gray, fine-grain stone containing microcrystalline quartz particles. Chert is similar in composition to flint, but has a lighter color. It was used in Paleolithic and Neolithic times for tools, weapons, and vessels. Currently, chert is used as an abrasive, a semiprecious stone, and as an aggregate for the construction of buildings and roads.
Synonyms and Related Terms
hearthstone; firestone; malmstone; jasper; prase; cherte (Port.); Chert (Deut.)
Other Properties
Fracture = conchoidal
| Mohs Hardness | 7.0 |
|---|
Additional Information
° B.Aston, J.Harrell, I.Shaw, "Stone" in Ancient Egyptian Materials and Technology, P.Nicholson, I.Shaw (eds.), Cambridge University Press, 2000. ° Mineralogy Database: Quartz
Comparisons
Properties of Common Abrasives
Additional Images
- Uplandchertgravels Tert.age.jpg
Upland chert gravels of Tertiary age
Chert
Authority
- Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
- Encyclopedia Britannica, http://www.britannica.com Comment: "chert and flint" Encyclopædia Britannica [Accessed January 22, 2002].
- C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 690
- 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