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 ooid grains feature diagenetic replacive dolomitization and dissolution vugs.
Millimetre--scale laminations, small centimetre-sized voids/ vugs and caves of up to tens of centimetres wide and 1 to 2 metres high are also predominantly conspicuously displayed on the outcrops (Figure 4).
The best pseudomorphous malachite specimens seen so far are floater groups and matrix pieces not exceeding 7 cm, and many of the pseudocrystals are "tipped" where their terminations touched the opposite wall of the seam or vug (Jones, 2008).
An old Arizpe miner interviewed by Wayne Thompson in 1972 described seeing a walk-in vug festooned with stalactitic arborescent wire silver studded with dark crystals of silver sulfides.
Vivendi Universal Games - VUG (99% Vivendi Universal economic interest):
In December of 2000 another large vug yielded about 700 specimens.
5 cm and are very lustrous and sharp; they are mostly short-prismatic, untwinned singles (two or three sixling twins also were found) which grew on the walls of a vug in altered galena.
This performance was mainly achieved through the significant improvement of Canal+ Group operating income, the positive operating income at Universal Music Group and the continued operating income growth at SFR Cegetel Group and Maroc Telecom, despite higher operating loss recorded by VUG.
In just one of the Bahmanns' pieces, a shallow 4 x 5-cm open vug is lined by subhedral, pale green tarbuttite crystals over which is a coating of sparkling white microcrystals of the new species skorpionite.
Over 70 top game developers such as Cyan, EA, Ion Storm, Nihilistic, Pandemic, People Can Fly, Red Storm, Remedy, Sammy, Sega, Shiny, Sony Cambridge, Turbine, VUG and Z-Axis have licensed Havok 2 for their titles.
Many of these specimens are botryoidal geode and vug fillings; prices were [euro]60-80.