Gordon's jumper with 12 minutes remaining broke a 36-36 tie and triggered a New Mexico run that put the contest away.
The Lobos (22-4, 8-2 Mountain West) also got 12 points from Tony Snell while claiming revenge for an 80-63 loss to UNLV Jan. 21 in Las Vegas.
New Mexico notched its seventh straight victory since dropping back-to-back games San Diego State and the Rebels.
Anthony Marshall led UNLV (22-6, 6-4) with 18 points and 10 rebounds.
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