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LEUCOTONALITE [1 record]

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Record 1 2006-11-15

English

Subject field(s)
  • Petrography
CONT

Leucocratic tonalite - Forms local elongate masses of white rock composed of plagioclase ... and quartz; appear to be very large-scale schlieren. Leucocratic tonalite texturally similar to tonalite forming main part of Lakeview Mountains pluton, except for absence of mafic minerals and slightly smaller grain-size. Extremely poikilitic biotite and hornblende locally present in very small amounts. Rare interstitial white mica found in some plagioclase.

OBS

leucocratic tonalite: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
OBS

tonalite leucocrate : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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