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BOEHMITE [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-04-13

English

Subject field(s)
  • Mineralogy
  • Bauxite Mining
  • Geochemistry
  • Chemical Elements and Compounds
Universal entry(ies)
AlO(OH)
formula
DEF

A white and relatively soft basic aluminum oxide ... that is a common mineral in bauxite, in which it forms disseminated grains or pealike masses.

CONT

Young bauxites are gibbsitic. With age, gibbsites give way to boehmite and diaspore.

OBS

Named after J.B. Bohm, a German chemist.

French

Domaine(s)
  • Minéralogie
  • Mines de bauxite
  • Géochimie
  • Éléments et composés chimiques
Entrée(s) universelle(s)
AlO(OH)
formula
DEF

Minéral du système orthorhombique constitué d'un oxyde hydraté d'aluminium, se présentant en agrégats blancs ou brunâtres, abondant dans les bauxites.

Spanish

Campo(s) temático(s)
  • Mineralogía
  • Minas de bauxita
  • Geoquímica
  • Elementos y compuestos químicos
Entrada(s) universal(es)
AlO(OH)
formula
DEF

Óxido natural de aluminio hidratado, uno de los constituyentes de la bauxita.

OBS

Es una variedad de diásporo que cristaliza en el sistema rómbico.

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Record 2 1992-10-16

English

Subject field(s)
  • Mineralogy
  • Bauxite Mining
CONT

There are certain chemical requirements that bauxites must meet to be economic, these vary according to whether the bauxite is gibbsitic or boehmitic....

CONT

European karst bauxites ... are generally lithified ... Mineralogically they are boehmitic ores.

French

Domaine(s)
  • Minéralogie
  • Mines de bauxite
CONT

Les bauxites à boehmite reposent le plus souvent sur des roches carbonatées : calcaires ou dolomies; elles sont fossiles et recouvertes d'un toit. Mais (...) des bauxites à boehmite peuvent se rencontrer sur roches éruptives (...)

OBS

Les trois hydroxydes d'aluminium constituent l'essentiel des roches résiduelles alumineuses, que sont les bauxites (boehmite prédominante) et les latérites (gibbsite prédominante).

Spanish

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