TERMIUM Plus®

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COLLOFORM [1 record]

Record 1 2010-04-14

English

Subject field(s)
  • Mineralogy
DEF

Pertaining to the rounded, globular texture of mineral formed by colloidal precipitation.

CONT

Volcanic massive sulphide deposits. ... The dominant original textures appear to be colloform banding of the sulphides with much development of framboidal pyrite, perhaps reflecting colloidal deposition.

CONT

In general, [Mississippi Valley-Type] deposits are renowned for the large size and crystallographic variety of their constituent minerals. Some districts, in contrast, are characterized by their extremely fine-grained ores as exemplified by the banded, colloform sphalerite containing skeletal galena crystals as at Pine Point and Polaris in Canada and the Silesia District in Poland.

OBS

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

PHR

Colloform cassiterite, sulphide, texture.

French

Domaine(s)
  • Minéralogie
DEF

Qui présente un aspect colloïdal.

CONT

[...] lits colloformes ou botryoïdaux de très fins cristaux [...]

OBS

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

PHR

Minerai, pechblende colloforme.

PHR

Cassitérite, sulfure, texture colloforme.

Spanish

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