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ADCUMULATE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2004-11-17

English

Subject field(s)
  • Petrography
DEF

Coarse grained carbonatite rock composed of 50% or more calcite that displays adcumulate texture.

OBS

If it is medium- or fine-grained the rock is a micro-sövite.

OBS

Various mineralogical modifiers are used to classify the sövite (e.g., apatite-magnetite sövite, olivine-amphibole sövite, etc.).

French

Domaine(s)
  • Pétrographie
DEF

Carbonatite à grain grossier composée d'au moins 50 % de calcite et présentant une texture à adcumulats.

OBS

Si elle est à grain fin ou moyen, la roche est une microsövite.

OBS

Diverses distinctions minéralogiques sont utilisées pour classifier la sövite (p. ex. sövite à apatite-magnétite, sövite à olivine-amphibole, etc.).

Spanish

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

Record 2 2003-08-28

English

Subject field(s)
  • Petrography
DEF

A cumulate formed by adcumulus growth, with intercumulus material comprising less than five percent of the rock.

CONT

The Bushveld Complex ores contain more than 90 modal per cent chromite and are texturally adcumulate rocks.

OBS

The distinction between orthocumulates, mesocumulates, and adcumulates is reflected directly in the ore grade and also partly determines whether the ore must be beneficiated prior to smelting; it is therefore of great economic significance.

French

Domaine(s)
  • Pétrographie
CONT

Les minerais du Complexe du Bushveld renferment, selon l'analyse modale, plus de 90 % de chromite et constituent, en termes texturaux, des adcumulats.

OBS

La distinction entre orthocumulat, mésocumulat et adcumulat se traduit directement dans la teneur du minerai et détermine en partie si le minerai doit être enrichi avant l'étape de fusion; elle est donc de grande importance économique.

Spanish

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