What does vug mean?
Vug is an uncommon geological and mining term for a small natural cavity or hollow in rock. The opening may be empty, but it can also contain ore, mineral deposits, crystals, or fluid inclusions. Geologists use the word when describing the structure of a rock, while collectors and miners may apply it to cavities that contain attractive or commercially valuable minerals. A crystal-lined vug, for example, can provide a clear view of minerals that developed inside an opening in the surrounding rock. The related adjective vuggy describes rock or material characterized by such cavities. Vug should not be confused with the more general words cavity, hollow, or pocket, each of which can apply to many kinds of depressions; vug is more specifically associated with small openings in rock. Although the word has a long history in regional British usage, it now belongs mainly to technical English. It is consequently more useful to readers interested in geology, mining, mineral collecting, or the descriptive vocabulary of rocks than to general users.
nounA small natural cavity or hollow in rock, especially one containing ore, minerals, or crystals.
- A small natural cavity or hollow in rock, often containing ore, minerals, or crystals.
"The geologist carefully exposed a crystal-lined vug in the quartz specimen."
"The geologist carefully exposed a crystal-lined vug in the quartz specimen."
"Miners followed the vug in hopes of finding a richer concentration of ore."
The standard plural is vugs.
"Several narrow vugs were visible along the exposed rock face."
In a lump of rock, a vug is the hidden chamber where crystals put on a show.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does vug come from?
The precise etymology of vug is uncertain. The word is recorded in regional British usage for a hollow or cavity and later became established in English-language geology and mining. Because its ultimate source is not securely established, it cannot confidently be assigned to a particular Celtic, Germanic, or other language.
Related word forms
How vug is actually used
This is primarily specialist terminology in geology, mineral collecting, and mining. Outside those contexts it is uncommon and has no widely established figurative use.