Dec 7 (Reuters) - Marmota Energy Ltd MEU.AX :
* Fully funded open offer for challenger gold mine MEU.AX
* Entered into a binding heads of agreement with asymmetric investment management pty ltd
* Says agreement to to effect that marmota's aud$2m offer for the challenger gold mine (and related assets) is now fully funded
* Source text for Eikon ID:nASX9GbBVv