Masilamaniswara Temple, Thirumullaivoyal, Tiruvallur District, Tamil Nadu has a unique Mercury Siva Lingam. Mercury Siva Lingam is also called Rasa Lingam or Parad Lingam.
Masilamaniswara Temple is also mentioned in the hymns of Thevaram, and is a Paadal Petra Sthalam. Lord Shiva is worshipped as Masilamaninathar, and Parvathi is worshipped as Kodiyidai Nayagi.
