symbol in Japanese. My Japanese dictionary calls it the Ha-kenkoroitsu. (from the German word Hakenkreuz, crooked cross) and it describes it at the 45-degree clockwise manji used by the Nazi party. That symbol is usually surrounded by a circle. In Japan. it is unusual to see the manji at that angle.
The first person to propose that magnesium was an element was Joseph Black of Edinburgh in 1755, and an impure form of metallic magnesium was produced in 1792 by Anton Rupprecht who heated magnesia (magnesium oxide, MgO) with charcoal. He named the element austrium after his native Austria.
There are six sources of raw materials for the production of magnesium: magnesite, dolomite, bischofite, carnallite, serpentine and sea water.These sources differ in the magnesium content, in production methods, and in their origin.Some are mined from mines, some in open mining, others originate in various processes carried out on sea water and salt lakes, and another material originates from the waste of the asbestos production process.agnesium Extraction From Sea Water. The history of elementary magnesium started in 1755,when Joseph Black, a Scottish chemist, discovered that magnesia contained a new element, magnesium.