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MICROGRENU [2 records]

Record 1 2013-08-30

English

Subject field(s)
  • Mineralogy
DEF

[Said of] a rock structure in which the component minerals occur as discrete grains which are visible only under a microscope.

Key term(s)
  • micro-granulitic
  • micro-granular

French

Domaine(s)
  • Minéralogie
DEF

Se dit d'une texture en petits grains visibles seulement au microscope, caractérisant les roches magmatiques filoniennes.

Key term(s)
  • micro-grenu

Spanish

Save record 1

Record 2 1998-09-03

English

Subject field(s)
  • Petrography
  • Geology
OBS

Microgranular: Minutely granular; specif. said of the texture of a carbonate sedimentary rock wherein the particles are mostly 10-60 microns in diameter and are well-sorted, and the finer clay-sized matrix is absent.

OBS

Limestone: A sedimentary rock containing calcium carbonate (calcite), or calcium-magnesium carbonate (dolomite), or any combination of these two carbonates at least to the extent of 50 percent of the rock.

French

Domaine(s)
  • Pétrographie
  • Géologie
DEF

Calcaire dont les grains de calcite ont une taille allant de 64 à 250 [mu].

Spanish

Save record 2

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