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SERIE ALCALINE [1 record]

Record 1 2006-05-30

English

Subject field(s)
  • Geochemistry
  • Petrography
DEF

One of the four chemical classes of igneous rocks distinguished by Peacock based on the alkali-lime index.

CONT

The large disseminated Cu-Au-Ag deposits at Copper Mountain, British Columbia have been classified by Sutherland Brown et al. (1971) as complex porphyry-type deposits of the alkaline suite ...

OBS

This term [alkalic series] comprises those rock series with alkali-lime indexes less than 51.

French

Domaine(s)
  • Géochimie
  • Pétrographie
DEF

Série de roches éruptives riches en feldspaths alcalins et en feldspathoïdes.

OBS

Elles peuvent être divisées, en fonction de la présence de silicates sodiques ou potassiques, en roches alcalino-sodiques ou alcalino-potassiques.

Spanish

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