Antimatter mine
An antimatter mine was a relatively small antimatter weapon used by Starfleet, the size of a small probe that contained a large quantity of antimatter. On board sensors detected close-range starships and the mine moved towards them. On impact, the containment fields within the mine collapsed, dispersing antimatter onto the ship's hull, causing a large number of instant annihilations, resulting in an explosion.

In 2369 the crew of the  used five hundred antimatter mines of varied sizes by order of Captain Edward Jellico to force a Cardassian fleet hidden into the McAllister C-5 Nebula to withdraw. The mines were placed surreptitiously by a shuttle and attached themselves on the hulls of the Cardassian ships. ()

See also
Antimatter charge
Antimatter missile
Antimatter torpedo
Antimatter warhead
Explosive weapons

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