TERMIUM Plus®

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

LAMPROBOLITE [1 record]

Record 1 2016-02-26

English

Subject field(s)
  • Mineralogy
OBS

A black or brown variety of hornblende rich in ferric iron (ferrous iron has undergone oxidation) and occurring in basalts and other iron-rich basic igneous (volcanic) rocks; a type of "brown hornblende" characterized optically by strong pleochroism and birefringence, by high refractive indices, and by a smaller extinction angle.

French

Domaine(s)
  • Minéralogie
OBS

[On la rencontre dans des] roches volcaniques, surtout basiques: andésites, basaltes, téphrites, etc. Elle s'y présente en cristaux fréquemment entourés d'une bordure opaque d'oxydes de fer ou de titane, analogue à celle observée dans les mêmes conditions autour de la biotite. Également dans les gabbros et roches ultrabasiques.

Spanish

Campo(s) temático(s)
  • Mineralogía
OBS

Variedad de hornblenda verdinegra.

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