What process can enrich a copper deposit, perhaps making it profitable?
A) intense fracturing associated with meteoroid impacts, like at Sudbury
B) deposition of large amounts of quartz and calcite in the rock
C) dispersing the copper-rich grains by wind and water
D) leaching by weathering and redeposition at the water table

Question

Quizplus · Accepted Answer

Leaching by weathering and redeposition at the water table can enrich a copper deposit by removing less soluble materials and concentrating copper minerals, potentially making the deposit more profitable to mine. This process, known as supergene enrichment, often occurs in the oxidation zone above the water table, where copper can be precipitated from solution as higher-grade ores.

What Process Can Enrich a Copper Deposit, Perhaps Making It