different between feldspar vs eclogite

English

Alternative forms

• felspar

Etymology

Partial calque of German Feldspat, formed from Feld (“field”) + Spat (“spar”).

Noun

feldspar (countable and uncountable, plural feldspars)

1. (mineralogy) 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.

Derived terms

Related terms

• feldspathic
• feldspathoid
• feldspathose

Translations

See also

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

English

Etymology

Ancient Greek ?????? (eklog?, “selection”), +? -ite.

Pronunciation

• (UK) IPA^(key): /??kl?d???t/

Noun

eclogite (countable and uncountable, plural eclogites)

1. (petrology) A coarse-grained metamorphic rock, a mixture of pyroxene, quartz, and feldspar with inclusions of red garnet.
   • 2004, Richard Fortey, The Earth, Folio Society 2011, p. 101:

     Assiduoud field-workers have discovered little pods of a rock called eclogite in the rocks around San Bernardino.

Translations