Latest Articles

RSS

Cerussite – Occurrence, Properties, and Distribution

Cerussite was named by Wilhelm Karl von Haidinge in 1845 after the Latin word ‘cerussa’ meaning ‘white lead’. The mineral belongs to the aragonite group.

25 Apr 2014

Where Can You Mine for Gold?

Gold is an extremely rare ore. Geological survey reports state that the average concentration of gold in the Earth’s crust is only 0.005 ppm. It is found in rocks at very low concentrations.

24 Apr 2014

Anthracite - Mining Fundamentals

Anthracite is a hard, lustrous black coal that contains a high percentage of fixed carbon and a low percentage of volatile substance. It is the most metamorphosed type of coal with carbon content ranging between 92 and 98%.

24 Apr 2014

Acid Mine Drainage - Mining Fundamentals

Acid mine drainage (AMD), also referred to as acid and metalliferous drainage and acid rock drainage, can be defined as outflow of acidic water from metal mines or coal mines that have in most cases been abandoned.

24 Apr 2014

Bioleaching Process - Mining Fundamentals

Bioleaching or microbial ore leaching is a process used to extract metals from their ores using bacterial microorganisms. The bacteria feed on nutrients in the minerals causing the metal to separate from its ore.

24 Apr 2014

Autogenous Grinding - Mining Fundamentals

Autogenous grinding is a process of grinding ore in a rotating cylinder using large pieces of the same ore. Autogenous mills operate mechanically like the ball mills; however, the media used for grinding differ.

24 Apr 2014

Development Drilling - Mining Fundamentals

Mining companies conduct development drilling before embarking on a mining project. Development drilling is performed to establish precise estimates of mineral reserves. This is performed once an ore body has been identified.

24 Apr 2014

Disseminated Ore - Mining Fundamentals

Disseminated ore is an ore containing small particles of valuable minerals spread quite uniformly throughout the host rock.

24 Apr 2014

Gyratory Crusher - Mining Fundamentals

A gyratory crusher is an ore processing machine that crushes the ore between an eccentrically mounted cone and a crushing throat that is fixed. In mining, the most important criteria for effective crushing of oresis to choose the type of crusher that suits the rock (ore) material and to ensure unifo

23 Apr 2014

Heap Leaching - Mining Fundamentals

Heap leaching is an industrial mining process of separating precious metals, copper and other minerals from ores. It involves a series of chemical processes through which the mineral ores are piled in the form of a heap and a leach solution is spread over the ore surface to leach metal from the heap.

23 Apr 2014