noun
- A dark silicate mineral of the pyroxene group, containing magnesium, iron, and calcium, commonly found in igneous rocks.
Usage: technical; mineralogy
Examples
- Pigeonite is an important constituent of many basaltic rocks.
- The geologist identified pigeonite crystals in the thin section of the meteorite sample.
- Pigeonite forms at high temperatures in cooling magma.
- The presence of pigeonite in the rock indicated rapid crystallization.
- Lunar samples contain significant amounts of pigeonite, reflecting the Moon's volcanic history.