augite

/aw-jahyt/US // ˈɔ dʒaɪt //UK // (ˈɔːɡaɪt) //

辉绿岩,辉石,辉锑矿,蛟龙石

Definitions

n.名词 noun

1
- : a silicate mineral, chiefly of calcium, magnesium, iron, and aluminum: a dark-green to black variety of monoclinic pyroxene, characteristic of basic rocks.

With the exception of quartz and augite, these names are, however, representatives of different classes of minerals.
In the same flow hypersthene-andesite may occur in one portion, while in close proximity the lava is an augite-andesite.
In the more basic phases anhedrons of augite and of olivine appear, and magnetite grains are usually present.
On the spurs west of Nisqually Glacier the andesites contain both pyroxenes, the augite being somewhat the more important.
Below this were strata of trachitic breccia and augite; the formation was then seamy to an unknown depth.