Which is better hematite or magnetite

These methods often require sample preparation e. Several emission and absorption spectroscopy techniques provide elemental information. However, there are many cases where elemental information is not sufficient and molecular or crystal structure information is needed. Metal oxide determinations are important in many industrial fields and techniques that atomize or ionize samples often lose a significant part of the original composition and structure information. Vibrational spectroscopy methods like Raman spectroscopy, however, provide information regarding the molecular structure.

These techniques also require minimal sample preparation. As an example case, an alloy with different oxide layers are presented in figure 1. Two distinct layers can be observed: a darker brown layer and a metallic blue layer that seemed to not only reside next to the brown layer but also underneath it. The measurements can be done simply by pointing the laser at the sample in this case the oxide layer and beginning the data acquisition after choosing the optimal measurement parameters.

Time-gated Raman is not as sensitive to background or thermal emission as conventional Raman so the measurements can be done in ambient lighting and with heated samples. Care should be taken to precisely focus the laser on the point of interest and it should be noted that some samples degrade over time when exposed to intense photon emission.

Some iron oxides, like magnetite, are prime examples of materials that begin to oxidize when exposed to a strong laser beam or high temperatures. In Canada, Labrador is home to the majority of magnetite mining. In particular, mining companies focus exploration and development on the iron-rich Labrador Trough. It is the most magnetic mineral in the world. Additionally, obtaining iron from hematite ore can produce a great deal of carbon emissions, and the process for magnetite is much less harmful.

The product from magnetite ore is also of higher quality than from hematite ore. The former has less impurities, making it a premium product that can be sold to steel makers for higher prices. In this way, the elevated cost of processing magnetite ore can be balanced out. It is the largest producer of iron ore in North America, according to the Minnesota state government.

These include six mines that are focused on magnetite ore. The company operates three iron ore mines in Minnesota, which combined have the capacity to produce Cliffs Natural Resources also owns an iron ore mining complex in Western Australia.

For queries, please contact Frank LIU at liuxiaolei smm. For more information on how to access our research reports, please email service. Free Trial Subscribe Sign in.

Non-ferrous Non-ferrous. Base Metals. Minor Metals. Precious Metals. Scrap Metals. Rare Earth. Steel Steel. New Energy New Energy. More More. Magnetite is an opaque mineral not transparent. It is mainly found in sedimentary rocks. But it is sometimes found in beach sand in large quantities. The major use of magnetite is as a source to extract iron in the form of pig iron or sponge iron form. This produced iron is further used to convert into steel.

In addition, magnetite is used as a catalyst. It is the catalyst used in the production of ammonia in industrial scale. Hematite is an iron ore where iron can be found in the form of Fe 2 O 3. It is a major source of extracting iron. Hematite is a paramagnetic mineral. Therefore, it can get attracted to an external magnetic field.

Hematite is widely spread in rocks and soil. Figure 2: Hematite in gray color with Quartz in white color. Hematite has unpaired electrons that cause its magnetic properties. Therefore, hematite can be separated from a mixture using high-intensity magnetic separation methods which use magnetic fields with intensity ranging from 0.

Hematite has a metallic gray appearance. But the streak of hematite is red to reddish brown. It is an opaque material.