TERMIUM Plus®

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

HORNBLENDE GRANITE [2 records]

Record 1 2011-12-14

English

Subject field(s)
  • Geochemistry
  • Erosion and Weathering (Geol.)
  • Petrography
CONT

basic front : In granitization, an advancing zone enriched in calcium, magnesium, and iron, that is said to represent those elements in the rock being granitized that are in excess of those required to form granite. During granitization, these elements are believed to be displaced and moved through the rock ahead of the granitization front, to form a zone enriched in minerals such as hornblende and pyroxene.

Key term(s)
  • granitisation front

French

Domaine(s)
  • Géochimie
  • Érosion et corrosion (Géologie)
  • Pétrographie

Spanish

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Record 2 2004-07-13

English

Subject field(s)
  • Petrography
DEF

A granite that contains biotite but no other ferromagnesian mineral or muscovite.

CONT

The commonest division of the granite family is perhaps "biotite-granite"..., characterized by containing a brown mica to the exclusion of muscovite, hornblende or augite.

OBS

The main mineralogical types are biotite granite ("normal") ... Granitite is an obsolete name for the normal, i.e. biotitic, granite.

French

Domaine(s)
  • Pétrographie
CONT

Les variétés de granites [...] Granite à biotite : mica noir (biotite), feldspaths (surtout orthose) et quartz qui ont cristallisé dans cet ordre.

Spanish

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