TERMIUM Plus®

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CHAIN STRUCTURE SILICATE [1 record]

Record 1 1998-03-12

English

Subject field(s)
  • Mineralogy
  • Geochemistry
OBS

inosilicate (chain silicate, band silicate). ... Two important groups of rock-forming minerals are included: pyroxenes, where two of the four oxygens are shared to give a 'single chain' structure with the ratio Si : O = 1 : 3; and amphiboles, where half the SiO4 tetrahedra share two oxygens and the other half share three oxygens, to give a 'double chain' or 'band' structure and a ratio Si : O = 4 : 11.

OBS

Inosilicates show a single-chain structure wherein each tetrahedron shares two oxygen atoms.

Key term(s)
  • chain inosilicate
  • chain structure inosilicate
  • single-chain structure inosilicate

French

Domaine(s)
  • Minéralogie
  • Géochimie
CONT

Les inosilicates (du grec «inos», fibre) [...] peuvent être en chaîne ou en ruban. Dans le premier cas, un seul oxygène est commun à deux tétraèdres voisins. [...] Cette formule est réalisée chez les pyroxènes [...] Les inosilicates en ruban sont représentés par les amphiboles [...]

Key term(s)
  • silicate en chaîne simple
  • inosilicate en chaîne simple

Spanish

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