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FELDSPATHOIDAL GABBRO [1 record]

Record 1 1978-04-19

English

Subject field(s)
  • Geology
OBS

Relatively dark rocks characterized by the coexistence of plagioclase (andesine or labradorite), large amounts of nepheline, and a ferromagnesian mineral (augite or litanaugite, olivine, barkevikitic hornblende).

OBS

"Essexites and Theralites" (...), like the malignites, also are feldspathoidal gabbros of widely varied composition and texture.

French

Domaine(s)
  • Géologie
OBS

Roches assez sombres, caractérisées par la coexistence d'un plagioclase (andésine ou labrador), de la néphéline en grande quantité, d'un élément ferromagnésien (augite ou augite titanifère, souvent olivine, hornblende barkévicitique).

OBS

"Roches non saturées en silice et à feldspathoïdes" (...) "Gabbros feldspathoïdiques" (...)

Spanish

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