You know Minerium is a JOKE when they put the MAX amount of coins in their code as "666", the devil's sign - LOL
https://github.com/MINERIUM-COIN/minerium/blob/master/src/amount.hLine 32:
static const CAmount MAX_MONEY = 666000000 * COIN;
DO NOT WASTE YOUR MONEY ON THIS JOKE OF A COIN
If you want Masternodes, go buy DASH, not this coin.