chert

Etymology
.

Noun

 * 1)  Massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral.
 * 2)  A flint-like tool made from chert.

Usage notes
Generally, in mineralogy and geology, a chert does not have a conchoidal fracture. In North American archeology the term chert occasionally is still used for various siliceous minerals (including flint) that have a conchoidal fracture; this leads to confusion between the terms flint and chert in some archeology texts.

Translations

 * Arabic:
 * Catalan:
 * Chinese:
 * Mandarin:
 * Czech:
 * Esperanto:
 * Estonian: ränikivi
 * Finnish: sertti
 * French:
 * German: Hornstein,
 * Hebrew:
 * Hungarian: csert
 * Italian: ftanite
 * Japanese: 角岩,
 * Maori: whaiapu
 * Polish:
 * Portuguese: sílex córneo
 * Russian:, кремни́стый известня́к
 * Slovene: roženec
 * Spanish: sílex,
 * Turkish:
 * Welsh: gornfaen