augite
noun
a silicate mineral, chiefly of calcium, magnesium, iron, and aluminum: a dark-green to black variety of monoclinic pyroxene, characteristic of basic rocks.
augitic
-
a word derived from
augite.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Pumice and trachyte are the most common rocks around this mountain, and these are augitic or porphyroid.
From The Andes and the Amazon Across the Continent of South America by James Orton
Limestones weather much more rapidly than clay-rocks; and augitic igneous rocks, as a rule, disintegrate more readily than the more highly silicated species.
From Geology by James Geikie
Pertaining to, or like, augite; containing augite as a principal constituent; as, augitic rocks.
From Webster's Unabridged Dictionary (2nd 100 Pages) by Noah Webster
When augitic and hornblendic materials predominate, then other terms are used; as, for example, dolerite tuff, greenstone tuff.
From Geology by James Geikie
The thickness of the vegetation on the sides of its crater-like basin renders it difficult to discover the nature of the subjacent rock, but it is probably composed of black cellular augitic lava.
From COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 by Alexander von Humboldt
