|Company Name||:||BILFER MADENCILIK VE IHR.A.S.|
|Location||:||ANKARA / YENİŞEHİR ÇANKAYA|
|Tel||:||+90(312) 430 28 80|
|Fax||:||+90(312) 433 90 47|
MINERALS IRON ORES AND CONCENTRATES Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, deep purple, to rusty red. The iron itself is usually found in the form of magnetite (Fe3O4), hematite (Fe2O3), goethite (FeO(OH)), limonite (FeO(OH).n(H2O)) or siderite (FeCO3). MAGNETITE Magnetite is best known for its property that it is strongly attracted to magnets. Some forms of Magnetite from specific localities are in fact themselves magnets. This form is known as Lodestone, and is the only mineral that acts as a natural magnet. Although its magnetism is weak, it is strong enough to attract large nails. Due to its magnetic properties, small iron particles are often found clinging to its surfaces. Some dealers intentionally place metallic filings on a Lodestone to demonstrate its magnetism. HEMATITE Hematite is one of the most common minerals. The color of most red and brown rock, such as sandstone, is caused by small amounts of Hematite. It is also be responsible for the red color of many minerals such as Garnet, Spinel, and to some extent, Ruby. Non-crystalline forms of Hematite may be transformations of the mineral Limonite that lost water, possibly due to heat.
MINERALS COPPER ORES AND CONCENTRATES Copper (German: Kupfer, French: cuivre) is a group 18 transition metal. Because copper was first found in Cyprus, it is thought that it’s names in all languages are derived from Cyprium. Main copper quarries include Maden in Elazığ (Ergani copper smelter), Murgul in Artvin (Gbkta) and Kure in Kastamonu. New copper deposits have been discovered in Rize, Çayeli.
MINERALS CHROMIUM ORES Chromium is a metalic element. Because it is very hard and has a melt ing point of 1857 °C, it is used to increase the hardness of metals and in the manufacturing of armoured vehi cles. It is quarried in Erzurum, Adana, Elazığ, Mugla, Bursa and Eskişehir.