The terms of the deal were not disclosed.
The Snowden name will be retained, but the company said being part of the Datamine group would provide long-term benefits for staff and customers.
Datamine said Snowden's advisory consulting business would extend it service offering.
"Snowden has a proud 33-year history, evolving from a geological consulting company to a diversified advisory consulting, software and training business," Snowden global manager Tarrant Elkington said.
"This acquisition marks the next step on our growth journey. I am pleased that the Snowden brand will continue. The software expertise and global footprint of Datamine offers tremendous opportunities for the growth of our business and to improve the experience of our clients."
Datamine executive general manager John Bailey said the Snowden business aligned closely with its existing offering.
"Snowden has a strong, expert brand with a wealth of experience, and has developed industry-leading products that complement Datamine's software portfolio," he said.