noun
- plural of vug; small cavities in rock or mineral specimens, often lined with crystals
Usage: geology
Examples
- The geologist discovered beautiful quartz crystals growing inside the vugs.
- These limestone specimens contain several vugs filled with calcite.
- Mineral collectors prize rocks with vugs because of the crystals they contain.
- The vugs in this geode are lined with amethyst crystals.
- Water had dissolved the rock over time, creating these small vugs.