norite

views updated May 08 2018

norite A coarse-grained, basic igneous rock consisting of essential plagioclase feldspar, orthopyroxene (hypersthene or bronzite), and clinopyroxene (augite), with accessory ilmenite (see ACCESSORY MINERAL; and ESSENTIAL MINERAL). Orthopyroxene is dominant over clinopyroxene, and the plagioclase is a calcic type (labradorite or bytownite). Norites, like gabbros, are found as layers in many large, layered basic intrusions (see INTRUSIVE), as well as forming intrusions in their own right.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

norite

views updated May 23 2018

norite Activated charcoal used to decolorize solutions.

A Dictionary of Food and Nutrition DAVID A. BENDER

More From encyclopedia.com

About this article

norite

All Sources -
Updated Aug 08 2016 About encyclopedia.com content Print Topic

You Might Also Like