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Chert vs Feldspar - What's the difference?

chert | feldspar |

As nouns the difference between chert and feldspar

is that chert is (geology|uncountable) massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral while feldspar is (mineral) any of a large group of rock-forming minerals that, together, make up about 60% of the earth's outer crust the feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium feldspars are the principal constituents of igneous and plutonic rocks.

chert

English

Noun

  • (geology, uncountable) Massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral.
  • (countable) 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.

    See also

    * chalcedony * flint * jasper * quartzite * silicate

    Anagrams

    *

    feldspar

    English

    Alternative forms

    * felspar

    Noun

    (en noun)
  • (mineral) Any of a large group of rock-forming minerals that, together, make up about 60% of the earth's outer crust. The feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium. Feldspars are the principal constituents of igneous and plutonic rocks.

    • Related terms

    * feldspathic * feldspathoid

    Derived terms

    * feldsparlike

    See also

    * albite * bytownite * andesine * anorthite * granite * labradorite * microcline * mineral * oligoclase * orthoclase * rock