vug
/vʌɡ
/noun Geology
A cavity in rock, lined with mineral crystals.The banded quartz is fascinating to study; euhedral crystals originally deposited in vugs and cavities were repeatedly covered with thin bands of agate....
- Veins in some septaria do not fill the fractures completely but form elongated vugs that are sometimes lined with well-formed crystals.
- Very narrow vugs containing quartz crystals are encountered in the quartz seams at times, but these invariably are barren of gold.
Derivatives
vuggy
- Unlike the vein deposits, the metasomatic flats are frequently vuggy and are the source of most crystallized mineral specimens from the district.
- During the mid-to-late 1970s some spectacular specimens were produced from a vuggy to cavernous fissure zone intersected by an exploration drift on the 17 level.
- During a nine-week period a vuggy zone about 250 feet inside the main haulage adit of the Mountain Monarch mine was exploited, and many fine rhodochrosite crystal groups were collected.
vugular
- We then obtain micro-scale computations of flow in such vugular media on very fine grids that resolve the geometry of the vugs.
- The product is effective when drilling formations that are fractured or vugular and when drilling highly porous formations.
- It is believed that the gels have not chemically degraded, but that the water eventually finds another fracture or vugular system to travel through.
Origin
Early 19th century: from Cornish vooga.
- pseudoperculum
- pseudoperidium
- pseudoperiodic
- pseudoperipteral
- pseudoperipteros
- pseudoperithecium
- pseudophone
- pseudophotograph
- pseudopigmentation
- pseudoplankton
- pseudoplanktonic
- pseudoplasmodium
- pseudoplastic
- pseudoplasticity
- pseudopod
- pseudopodal
- pseudopodial
- pseudopodic
- pseudopodium
- pseudopore
- pseudo-possession
- pseudopotential
- pseudopregnancy
- pseudo-presentiment
- pseudoprime