1. Plural of olivine; a group of silicate minerals that are typically green or yellowish-green and commonly found in igneous rocks.
Usage: geology; mineralogy

Examples

• Olivines are among the most abundant minerals in Earth's mantle.
• The basalt sample contained visible crystals of olivines.
• Geologists identified olivines in the meteorite, suggesting an extraterrestrial origin.
• The green olivines in the rock gave it a distinctive appearance.
• Olivines form at high temperatures and are important indicators of magmatic processes.