were are gold opals,iron ore and diamonds are mined?
As 3rd owner you should have checked the car out before buying. This is a problem you could have with any brand of car, not just Hyundai. Check with the dealer you bought the car from, did they offer any kind of warranty (30, 60, 90 days)? If not you can repair the transmission or sell the car.
Diamonds are mined in at least 25 countries across five continents. Africa, Russia, and Canada account for more than 90% of the world’s natural gem-quality diamond production. I'm not as familiar with the other items you listed. But I Googled opal mine and found there are opal mines in the United States (Nevada, Idaho, maybe other states too) and also in Australia.
In addition to Opals in western New South Wales, Australia; Victoria in the southern part of Australia also has gold (and had a gold rush back in the 1800s) and Diamonds are being mined in Western Australia (Argyle Diamonds).
Gold : the Sierras of California Opals: Australia Diamonds : South Africa Iron Ore: almost everywhere because it is very common, but Brazil has extensive reserves of high quality iron ore
