Placer deposit Wikipedia
Placers mode when difficult-material places is actually eroded, and you may sedimentary process concentrate ore. 40% of the many silver ever before mined originated in Witwatersrand ores. Container 9-step 3 (below) describes the newest Witwatersrand silver deposits, the largest gold deposits international. Most bedrock silver and gold deposits have been in quartz-steeped hydrothermal veins.
