Non-energy minerals stocks gained the most on New Zealand's Exchange, rising 4% in midday Wednesday.

Santana Minerals (NZE:SMI, ASX:SMI) saw the sharpest increase in the sector, gaining 6% in recent trade.

Meanwhile, energy minerals shares fell almost 2%.

Shares of Channel Infrastructure (NZE:CHI, ASX:CHI) drove the decline, falling more than 1% in recent trade.