haematite वाक्य
उदाहरण वाक्य
मोबाइल
- A 2005 work has shown that the slip is a matrix of mainly silicon and aluminium oxides, within which are suspended sub-microscopic crystals of haematite and corundum.
- Some of the individual stones of structure 1 were painted in yellows, reds and oranges using ochre pigment made of haematite mixed with animal fat, milk or eggs.
- A haematite cylinder seal of his servant and scribe Iliaka-um ul, son of S�n-ennam, has come to light from this city, suggesting prolonged occupation.
- He is further credited with optimising the yield of Haematite and Spathic iron ore from a fragmented patchwork of lodes in ground which was often soft, wet and difficult.
- Between 1871 and 1874, 940 tons of brown haematite were produced and it is thought that the ladders and steps to the beach were needed to reach the mine workings.
- Other examples of their use include reducing minerals like haematite to powder, for pigment, and crushing of hard nuts, such as hazel nuts, to extract the edible kernels.
- There is also iron in the leach product from the strong acid leach, which is removed in an intermediate step, in the form of goethite, jarosite, and haematite.
- Lead, copper, zinc, barite, haematite, tungsten, graphite, fluorite, and coal have all been mined at different times since as early as the 12th century.
- Continued oxidation of violarite leads to replacement by goethite and formation of a gossanous boxwork, with nickel tending to remain as impurities within the goethite or haematite, or rarely as carbonate minerals.
- Iron Crag Mine operated below the crag of that name from around 1864 to 1896.500 tons of haematite ore was raised in 1881, but the mine never proved a commercial success.
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