| |
| |
YourArt.com >> Encyclopedia >> chert (Site not responding. Last check: 2007-10-29) |
 | | Chert outcrops as oval to irregular nodules in greensand, limestone, chalk, and dolostone formations as a replacement mineral, where it is formed as a result of diagenesis. |
 | | Chert is generally considered to be less attractive and more common than flint, although the two materials are closely related. |
 | | A primary historic use of chert was as flints for flintlock firearms, in which flint or chert striking a metal plate produces a spark that ignites a small reservoir containing fl powder, discharging the firearm. |
| www.yourart.com /research/encyclopedia.cgi?subject=/chert (642 words) |
|