TAUMASIT (yunoni taumasit — hayronam), mineral. Tarkibi khimiyaviash Ca3N2[C03, SO4, SiO4] 13N2O. Cakhtiash 3,5; zichiash 1,88 g/am3. Rangash safed, shaffof. Kristallhoyash suzanshakl va rishtamonand ast.
Taumasit minerali kamyoft buda, dar kontakti trapp va ohaksang ba sifati mineralhoi fari, beshtar dar konhoi paydoishashon endoteni vomekhurad. Taumasit. dar Qurgoshimkon, Nakgay va Qarokhonai RSS Uzbakiston, inchunin dar Konsoyi RSS Tojikiston yoft shudaast.