Acting Energy Minister Hekia Parata says no changes will be made to the rules on prospecting on Schedule 4 conservation land.
She made the statement during her appearance at a meeting on Thursday of Parliament's Commerce Select Committee.
The minister was asked if she had been approached by the mining industry about extending the prospecting limits on high-value conservation land.
The area that can currently be prospected is 10x10 metres and Labour MP David Parker said he understands the mining industry wants that extended to 30x30 metres.
Ms Parata said she had not been approached about the matter but that, following the consultation process on mining on conservation land, changes are being made to the Crown Minerals Act, including the protection of Schedule 4 land.
