Camptonite

camptonite

[′kam·tə‚nīt]

(petrology)

A lamprophyre containing pyroxene, sodic hornblende, and olivine as dark constituents and labradorite as the light constituent; sodic orthoclase may be present.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Camptonite

 

magmatic dike rock consisting of plagioclase (usually labrador) and brown amphibole (barkevikite); it also contains pyroxene (titanaugite), biotite, and olivine. All varieties (amphibole camptonite, biotite camptonite, and others) usually contain a good deal of secondary calcite and zeolite, which either fill amygdules or form irregular secretions.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.