Azurite is a copper carbonate hydroxide mineral with a chemical composition of Cu3(CO3)2(OH)2. It is best known for its characteristic deep blue to violet-blue color. The blue color, known as "azure," is like the deep blue evening skies often seen above deserts and winter landscapes. Azurite is not a common or abundant mineral, but it is beautiful and its blue color attracts attention. It has been used by people in many parts of the world for thousands of years. Ancient peopl
Mir or Mirny, another diamond mine in the Yakutia region of Russia, is the third biggest diamond mine in the world. The underground diamond mine was estimated to contain more than 141Mct of probable diamond reserves as of January 2013. The diamond mine is owned and operated by the Mirny mining and processing division of Alrosa. It extracts diamond ore from the Mir kimberlite pipe, whose JORC reserve stood at 29.586Mt grading 3.29ct/t diamond as of July 2013. The Mir pipe was
Concentrates and tailings produced must be dewatered in order to convert the pulps to a transportable state. In addition, the water can be recycled into the existing water circuits of the processing plant, greatly reducing the demand for expensive fresh water. The main processes that are used in dewatering include dewatering screens such as Sepro-Sizetec Screens, sedimentation, filtering, and thermal drying. These processes increase in difficulty and cost as the particle size
The Acco Super Bulldozer is the largest and most powerful tracked bulldozer ever made. It was built in Italy by the Umberto ACCO company. The Acco super bulldozer was constructed mainly of Caterpillar parts, however many other components were specially adapted. The dozer blade, for example, is bigger than anything Caterpillar has ever made. This bulldozer has a gross weight of 183 tons and is powered by two 675 hp (503 kW) Caterpillar engines. The super bulldozer has a blade
A huge congratulations to S'thembile Nkambule for completing the personalised training programme with the School of Rock. S'the, as she is better known, was appointed as a Senior Mining Engineer Long Term Planning in July this year, and had the mammoth task of learning the different open-pit mine planning disciplines including block modelling (Surpac) and life-of-mine scheduling (OPMS). S'the also had the added responsibility to serve as Technical Person for the Resource & Re
This method of carrying the back in an overhand stope is shown at position G in the figure below. It is claimed that it makes drilling more convenient if machine drills mounted on a bar are used - 911 Metallurgist.
Augite is a rock-forming mineral that commonly occurs in mafic and intermediate igneous rocks such as basalt, gabbro, andesite, and diorite. It is found in these rocks throughout the world, wherever they occur. Augite is also found in ultramafic rocks and in some metamorphic rocks that form under high temperatures. Augite has a chemical composition of (Ca,Na)(Mg,Fe,Al)(Si,Al)2O6 with many paths of solid solution. Commonly associated minerals include orthoclase, plagioclase, o