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 ?
The Mississippian-aged rock is a fractured, often vugular limestone which tends to be highly dolomitized.
The drilling samples revealed a micro-fine crystalline dolomite with a trace of intercrystalline and vugular porosity.
As was the case in the first well bore, the core samples from the second well bore indicate the existence of reef organisms and highly vugular porosity.
The Company cored 69 feet and recovered 49 feet, which showed abundant reef organisms and highly visible vugular porosity.