The Government of Canada’s terminology and linguistic data bank.

LAMPROITE [1 record]

Record 1 2004-02-16


Subject field(s)
  • Petrography
  • Precious Stones (Mining)

A group name for dark-colored hypabyssal or extrusive rocks rich in potassium and magnesium.


Lamproite formed at great depth and was forced to the surface ... as volcanic pipes, dikes, and sills.


Diamonds ... are found in ... various igneous rock types of deep-seated origin (kimberlite, orangeite, lamproite, alnoite, aillikite, picritic monchiquite, alkali basalt) ...


  • Pétrographie
  • Exploitation de pierres précieuses

Roche ignée effusive alcaline, particulièrement riche en potassium, avec de la sanidine et/ou de la leucite, et du mica noir de type phlogopite.


Les diamants se rencontrent dans [...] des roches ignées d'origine profonde de différents types (kimberlite, orangéite, lamproïte, alnoïte, aillikite, monchiquite picritique et basalte alcalin) [...]


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