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LEUCO [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-05-12

English

Subject field(s)
  • Petrography
DEF

Applied to an igneous rock rich in light-colored minerals and poor in mafic minerals.

OBS

As opposed to "melanocratic."

OBS

The prefix "leuco-", meaning "light-colored" is often used before a name of rock, e.g. leucogabbro.

OBS

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

PHR

leucocratic breccia, leucocratic granite

Key term(s)
  • leuco

French

Domaine(s)
  • Pétrographie
DEF

S'applique aux roches magmatiques riches en minéraux blancs.

CONT

La proportion des minéraux foncés, facilement appréciable au simple coup d'œil, fournit une classification abrégée [des roches ignées], mais évidemment moins précise. On distingue les groupes suivants : [...] Roches leucocrates 5 à 35 [% de minéraux foncés].

OBS

leuco- : Préfixe couramment utilisé devant des noms de roches leucocrates. Ex. : leucogabbro.

OBS

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

PHR

brèche leucocrate, granite leucocrate

Key term(s)
  • leuco

Spanish

Campo(s) temático(s)
  • Petrografía
Save record 1

Record 2 1975-03-11

English

Subject field(s)
  • Dyes and Pigments (Industries)
  • Textiles: Preparation and Processing
OBS

--the colorless or nearly colorless soluble compound obtained by the reduction of a dye. An example would be the compound formed by reducing a vat dye.

French

Domaine(s)
  • Teintures et pigments (Industries)
  • Apprêt et traitements divers (Textiles)
OBS

--nom générique de substances incolores constituant des produits de réduction de certains colorants.

Spanish

Save record 2

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