how is gold separated from it s ore

Innovations: Introduction to Copper: Mining Extraction

The barren rock, or gangue has to be separated from the sulfide minerals in order to smelt the metallic copper from the ore. By far the greatest proportion of copper is extracted from the sulfides of copper, iron and sometimes other metals. Such ores originate from sulfurbearing volcanic magmas, which have separated into metal …

About Platinum Gold and silver mines

The separation chemistry of the platinumgroup metals is among the most complex and challenging of metal separations. A brief description of procedures for isolating the platinumgroup metals is set forth below, followed by descriptions of assaying and scraprefining techniques.

Extracting gold from rock OpenLearn Open University

Extracting gold from rock ... We need to separate the gold from everything else in the rock so the rock needs to be treated in some way. In New Zealand we chiselled some rocks from an outcrop near a small creek. We were pretty sure our rocks contained some gold as there were disused gold mines dating back from the 1870s close by. Crushing the rock Crushing the gold …

How Are Metals Extracted From Their Ores? | …

Metal extraction from ores occurs in many different ways involving physical, chemical and electrical means. Even ores of the same metal sometimes require different methods of separation depending on the concentration of the metal and its chemical composition within the ore. Ores are naturally ...