Ramp compares its project with the eye structure of the Nova-Bollinger nickel-copper mine in Western Australia.
Bullion climbed to an all-time high of $2,483.73 an ounce on Wednesday, before paring gains.
AngloGold Ashanti is purchasing about 9 million shares and a single European investor is picking up the remainder.
The trip comes after Niger’s military government withdrew mining rights from Canadian and French companies to develop uranium deposits.
