feldspar

 

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feldspar

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• felspar

Partial calque of German Feldspat, formed from Feld (“field”) + Spat (“spar”), the second element replaced with the English cognate spar.

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.

• feldspathic
• feldspathoid
• feldspathose

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