Ninety-five percent of the world's opal supply is mined in the nation of?

Ninety five percent of the world's opal supply is mined in the nation of Australia. Other countries where opal is mined in small amounts are Brazil, Honduras, Mexico and former Czechoslovakia. The opal mines are found in regions of Queensland, New South Wales, and South Australia in Australia. I hope it helps you.

Answerair masses develop near the equator are warm; tropical air mass