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RHOMB-PORPHYRY [1 record]

Filter results by subject field Alphabetical list of terms

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Alphabetical list of terms

Record 1 2011-02-21

English

Subject field(s)
  • Petrography
DEF

A porphyritic alkaline syenite composed of an alkali feldspar groundmass with augites having rhombohedral cross sections as the principal phenocryst minerals.

CONT

Rhomb porphyry is an example with large rhomb shaped phenocrysts embedded in a very fine grained matrix.

OBS

rhombenporphyr: from German.

OBS

rhomb porphyry: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Pétrographie
DEF

Variété de microsyénite à feldspathoïdes, à phénocristaux de feldspaths rhombiques et olivine dans une pâte d'anorthose, diopside, augite aegyrinique, biotite, minéraux opaques et apatite.

OBS

rhombenporphyr : emprunt de l'allemand.

OBS

porphyre rhombique; rhombenporphyr : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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