TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

TRACHYTE AEGYRINE [1 record]

Record 1 1998-07-08

English

Subject field(s)
  • Petrography
  • Mineralogy
DEF

A trachyte in which the pyroxene is acmite or aegirine and the feldspar is anorthoclase. It differs from normal trachyte in that its predominant alkali is soda instead of potash. Acmite trachyte is intermediate between true trachyte and phonolite.

French

Domaine(s)
  • Pétrographie
  • Minéralogie
OBS

trachyte : [...] On en a des variétés très sodiques à pyroxène (aegyrine), parfois à amphibole rougeâtre (katophorite) [...]

Spanish

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