vug

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vug

[vəg]
(petrology)
A small cavity in a vein or rock usually lined with minerals differing in composition from those of the enclosing rock. Also known as bughole.

vug

A pit-like natural cavity in stone, usually between a small fraction of an inch and a few inches in diameter; may be lined with crystals or layers of mineral materials; most common in dolomite, limestone, and marble.
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References in periodicals archive ?
Some of the large vugs seen are introduced by the removal of a small fraction of the ooids from the primordial deposit.
5 m thick tan bed that lacks lamination and contains a very porous surface full of vugs and bird's-eye structures.
The more soluble components, first of all limestone clasts, gypsum, and halite crystals, were dissolved and vugs were formed in the rocks (Fig.
Small vugs (1-2 mm), formed as a result of dissolution of carbonate fauna, are found.
Three to 10% open spaces as crusty vugs contribute to the rock's porous, crusty texture.
104 Quartz- local vugs, local breccia, weak hematite and limonite 9 0.
The earliest Jurassic (Hettangian) North Mountain Basalt of the Bay of Fundy has long been known for its rich assemblage of zeolite minerals in amygdales, vugs, and fractures (Aumento 1966).
Loosely held native gold is observed in open-space fractures and in vugs within late-stage breccias.
The MFU is characterized by a systematic zonation of zeolites occluding primary vugs.