Cavity in a rock. Return to the top of the page. WASTE : Material too low in grade to be of economic value.
Basically an irregular hole, in rock. Synonyms include pocket, cleft, cavity, vugh. Finding a vug loaded with crystals is the name of the game.
A small cavity in a rock, frequently lined with well-formed crystals.
A cavity, void or large pore in a rock that is commonly lined with mineral precipitates.
A small cavity in a vein or in rock.
A rounded, often spherical, cavity in a rock, commonly filled in part by crystals.
Vugs are small cavities inside rock that are formed when crystals form inside a rock matrix and are later removed through erosive processes, leaving behind voids. A common cause of vugs is minerals precipitating from solution in water, and then later being dissolved again by less saturated water. The inner surfaces of vugs are often coated with some of the mineral matter that formed them.