Which mining technique involves using gravitational separation?

Prepare for the GIA Diamonds Do Good Test. Study with interactive quizzes and detailed questions. Elevate your diamond expertise!

Dense media separation is the correct answer because it is a mining technique that utilizes gravity to separate valuable minerals from waste materials based on differences in density. In this process, a mixture of materials is introduced into a medium (often a suspension of dense particles) that has a specific density. When the materials are added, those with a density greater than the medium will sink, while those with a lower density will float. This gravitational separation allows for the efficient recovery of valuable minerals, including diamonds.

Block caving, alluvial mining, and room and pillar mining are techniques that focus on different processes. Block caving is primarily a method of extracting ore by undermining it, allowing it to collapse under its own weight. Alluvial mining refers to the extraction of minerals from riverbeds or sediment, which may involve panning or sluicing rather than a density-based separation. Room and pillar mining involves creating a network of rooms and pillars to support the mine's roof while extracting ore, but does not specifically use gravitational separation as its mechanism.

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy