diabase

/'daiәbeis/

n. 辉绿岩

[化] 辉绿岩

n. A basic, dark-colored, holocrystalline, igneous rock,

consisting essentially of a triclinic feldspar and pyroxene with

magnetic iron; -- often limited to rocks pretertiary in age. It

includes part of what was early called greenstone.

A name formerly applied rather loosely to certain dark-colored igneous rocks, including diorite, diabase, etc.

A greenish spotted porphyry, being a diabase whose pyroxene has been altered to uralite

A kind of diorite or diabase containing imbedded whitish spherules, which give the rock a spotted appearance.

A greenish chloritic mineral common in certain igneous rocks, as diabase, as a result of alternation.

今日更新

更新时间：2025-07-13 23:26:11