Sphalerite is a common mineral, and there are many localities where fine specimens have come from. Notable European occurrences include the Troya Mine, Mutiloa and the Aliva Mine (Las Manforas), Camaleño, Spain; Alston Moor, Cumberland, England; and the Lengenbach Quarry, Binn Tal, Wallis, Switzerland.
Wonderwerk Cave is on the eastern side of the Kuruman Hills, which consist mainly of ancient limestone, called dolomite. It is a solution cavity, which was formed millions of years ago as the limestone was dissolved by ground water and which was much later opened at one end by hillside erosion.
In 1998, Queensland Metals Corporation Limited mined 2.44 million tonnes to produce 345,000 tonnes of beneficiated magnesite which, in turn was used to produce 102,000 tonnes of dead-burned magnesia, 27,300 tonnes of electrofused magnesia and 17,500 tonnes of calcined magnesia.
MINERAL PROCESSING EPC Xinhai EPC provides services of sample test, mine design, equipment manufacture, etc. for clients, and solves the common problems in plant construction such as budget over-run, schedule delays, unqualified equipment, unclear recovery benefit, disputes of the manufacturers, and unclear responsibility of after-sale service
There are three operating uranium mines in Australia, Ranger in NT, Olympic Dam and Beverley in South Australia. A fourth is expected to start operation in 2009: Honeymoon, in South Australia, but a new mine on the Four Mile deposit close to Beverley may be in production before Honeymoon.