Chenfei Zhuang holds a 6.43% interest, or 14.8 million shares, while Zhensheng Zhuang holds a 7.67% interest, or 17.7 million shares.
The placement was part of a A$2.5 million farm-in deal for Mindax's Meekatharra North Gold Project.
The investors can earn up to a 51% interest in the project by spending $2.5 million on exploration over three years.
Under the farm-in agreement, an initial $500,000 is required to be spent by August 2013 before the first opportunity to withdraw.
Mindax will continue to manage the tenement and provide technical expertise during the earn-in period.
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