There are many minerals in nature, and there are more than 3,000 minerals known to date, and there are more than 200 kinds of useful minerals. In the earth's crust, there's a natural form of metal ore is very small, a large number of ore exists in the form of oxide ore, sulfide ore. (Ores containing metal components, called metal ore). (1) The metal ore can be divided into the following categories according to the nature, chemical composition and mineral composition of the metal minerals contained therein. (1) Natural ores - it is present in the form of a single element, such as gold, platinum, silver and the like. (2) Oxidized ore - refers to the composition of the ore as an oxide. Such as: hematite (Fe2O3), copper ore red (of Cu2O) and the like. (3) Sulphide ore - refers to the composition of the ore is sulfide. Such as chalcopyrite (CuFeS2), galena (PnS), chalcocite (MOS2), sphalerite (the ZMS) and the like (4) Mixed ore - is a mixture of the first three. (2) According to the type of metal contained, the ore can be divided into the following (1) ferrous metal ore - such as iron, manganese , chromium (2) Non-ferrous metal ores - such as copper, lead, zinc, aluminum, etc. (3) Rare metal ores - such as sputum , sputum, etc. (also relative concept) (4) Radioactive ore - such as uranium , thorium, etc. (5) precious metal ore - such as gold, sputum, mooring, etc. (6) Non-metallic ore - such as building stone, plaster , talc, etc. Extrusion Heat Sink,Extruded Heat Sink,Extruded Heat Sink Profiles,Extruded Aluminum Heatsink Suzhou Wint Electric Co., Ltd , https://www.winforthermal.com