noun
- Plural of diallage; a type of pyroxene mineral, typically greenish or grayish, found in igneous rocks.
Usage: mineralogy; technical
Examples
- The geologist identified diallages in the thin section of the basalt sample.
- Diallages are commonly found in gabbro and other mafic igneous rocks.
- The specimen contained several crystals of diallage with a characteristic bronze luster.