Pdf titaniferous magnetite deposits associated with. Mineralogy, geochemistry and petrogenesis of the vtibearing and. Lnwrs, department of geology anil mineralogy, u ni,versity m useum, orford, englond. Titanomagnetite may undergo oxyexsolution during cooling, resulting in ingrowths of magnetite and ilmenite. Contrasted mineralogy and textural relationships in. A preliminary report on uranium, radium, and vanadium volume. It is a black, opaque, submetallic to metallic mineral with a mohs hardness between 5 and 6. Conclusion carbonbased direct reduction of titaniferous magnetite does.
Ore size does affect direct reduction of titaniferous magnetite. Purchasers can download a free scanned copy of the original book without typos from the publisher. This means that less iron is captured by the ulvospinel, and hence a larger degree of reduction is possible. For best results viewing and printing pdf documents, it is recommended that you download the documents to your computer and open them with adobe reader. Titanomagnetite, also known as titaniferous magnetite, is a solid solution between magnetite and ulvospinel that crystallizes in many mafic igneous rocks. The effect of magnesia and alumina crucible wear on the. This report includes tables, maps, and illustrations. Study of a titaniferous magnetite chlorination at high.
Vanadiumbearing titaniferous magnetite bands hosted by precambrian. Introduction titaniferous magnetite titanomagnetite deposits are found in many countries throughout the world. Ore mineralization has been found at this location, however the precise grade, tonnage, and extent of the mineralization are not known. A number of magnetite beds of sedimentary origin, carrying a notable percentage of iron, were found by the writer while engaged in making a geologic examination of the blackfeet indian reser. Titaniferous magnetite ore is mined in south africa and china and processed for vanadium extraction. It was not found in the rutile of the dannemora ore. It is one of just a few minerals that are attracted to a common magnet. A duplex bof process in the steelmaking shop yields a vanadium rich slag that can be converted into v2o5 via hydrometallurgical processing. A study on reduction kinetics of titaniferous magnetite ore. Feti v oxide deposits of the kunene anorthosite complex sw. Titaniferous definition of titaniferous by medical dictionary. Magnetite is a naturally magnetic mineral that is a member of the iron subgroup of the spinel group of minerals that also includes franklinite. It is one of the oxides of iron, is ferrimagnetic, it is the most magnetic of all the naturallyoccurring minerals on earth.
Titanomagnetite, also known as titaniferous magnetite, is a solid solution between magnetite and ulvospinel that crystallizes in many mafic igneous. Report issued by the bureau of mines over the iron mountain magnetite deposits. Part or all of this report is presented in portable document format pdf. Cristobalite, hercynitemagnetite, and aluminous titanomagnetite occur in lesser amounts. A detailed description of samples 060902p and 061008 is presented in chapter 21 of this book. He explicates the thesis with magnetite relicts in the hematite which shows that the hematite is a secondary oxidation product and not the original. A process for upgrading lowgrade magnetitecontaining iron ore, flow sheet of the beneficiation process. Pdf the geochemistry of titanomagnetite in magnetite layers and. The magnetiteapatite ore of the kiruna district, northern sweden. It is often found in the form of isometric crystals. Titaniferous magnetite layers of the bushveld complex in the. Different geochemical composition diagrams confirm their tholeiitic origin. Titaniferous definition of titaniferous by medical.
This work estimated the composition of the titaniferous magnetite prior to the exsolution, in order to calculate the temperature and oxygen fugacity of the different. Titaniferous magnetite titanomagnetite resources contain economically significant reserves of vanadium and iron as well as titanium. The titaniferous magnetite is an important ore for being used as principal source of ti and v apart from fe. The north carolina titaniferous magnetites furnish another instance of this association, but in these ores the chromium appears to be in the magnetite rather than in the titaniferous component. Mineralogy and carbothermal reduction behaviour of vanadium.
Titaniferous article about titaniferous by the free dictionary. The minnesota geological and tatural history survey found it desirable to compile the avail. Highsilica glass, colorless to brown, accounts for at least 20 vol% and contains 4. Crystallization of ti magnetite is controlled by the fe 2 o 3 feo ratio of the liquid and is a function of f sub o 2, temperature, and the f sub h 2 o f sub h 2 ratio. The titaniferous magnetite bodies occur in the form of subparallel bands width from 1 meter to 20 meters within gabbroic rock in the northeastern part of the nuasahi chromiferous ultramaficmafic complex. Andersonoxidation of the lablache lake titaniferous magnetite deposit, quebec. The chromiferous ultramafic rocks are flanked by gabbroic rocks both on the eastern and western sides. Titaniferous magnetite iron occurrence in cook, minnesota. Titaniferous magnetite deposits associated with archean. Most of the hercynite and ilmenite initially present are decomposed during the gassolid phase reaction between 1273 and 1823 k. Listerthe composition and origin of selected irontitanium deposits. Mineral resources of west bengal in relation to structure.
Troctolite is the predominant rock unit in the intrusion, with interlayered bands of peridotite, mafic pegmatitic rock, olivine gabbro, magnetite bearing gabbro, and anorthosite. As stated in the introduction, magnetic, gravity, and geologic surveys were made to permit an estimate of the extent and magnitude of the iron mountain, colorado, titaniferous magnetite deposit p. The occurrence of rutile in the titaniferous magnetites of. Composition of magnetite from carbonatites sciencedirect. Titaniferous magnetite deposits of the laramie range, wyoming. The titaniferous magnetite iron occurrence is in cook, minnesota. Titaniferous magnetiteilmenite thermometry and titaniferous. Typically octahedral, less commonly dodecahedral, striated ii 011on oil, to 25em, very rarely cubic.
It is the most magnetic of all the naturallyoccurring minerals on earth. The ferride element content of titaniferous magnetite in canada geological survey of canada. The titaniferous magnetite bodies of the duluth gabbro in northeastern minnesota are well known from various scattered references which indicate some differences in the character of the ores from different places. Oxidation behaviour and phase characterization of titaniferous. The vanadiumbearing titaniferous magnetite ore in the panzhihua area has an average composition of.
Pdf titaniferous magnetite ore is a kind of symbiotic complex ore which comprises. The echo lake intrusion in the upper peninsula up of michigan, usa, was formed during the 1. The formation of the massive ore bodies is referred to late magmatic crystallization from. In india such depositions are found in states of karnataka, maharashtra, orissa, jharkhand and west bengal moskalyk and alfantazi, 2003, indian minerals year book, 2012.
Extractive metallurgy of vanadiumcontaining titaniferous. The titaniferous magnetite b odies occur in the for m of subparallel bands width fro m 1 meter to 2 0 meters within gabbroic ro ck in the nort heastern part of the n uasahi. A complex pattern of electrons between the two forms of iron is the source of its. Charles, lac dore complex, kiglapait, newboro lake. Magnetite is a black, opaque, magnetic mineral that leaves a black streak when rubbed across a hard rough surface. The crystal structure of magnetite is inverse spinel. Vanadium resources in titaniferous magnetite deposits.
Mafic intrusionhosted titaniumiron geology of canadian. Titaniferous magnetite, a titaniumbearing variety of magnetite. The magnetism of magnetite is due to two different types of iron. Magnetite is a rock mineral and one of the main iron ores, with the chemical formula fe3o4. The ferride element content of titaniferous magnetite in. A comparative study of vanadium recovery from titaniferous. It is one of the oxides of iron, and is ferrimagnetic. The nature and origin of titaniferous magnetiterich.
The nature and origin of titaniferous magnetiterich layers. Titaniferous magnetite is the most important source for vanadium presently accounting about 85% of the current world v2o5 production. Tianiferous magnetite ore is also processed in steelmaking operations in china, russia and south africa. The formation and subsequent textural evolution of ti magnetite layers is believed to have taken place as follows. For additional information on the mineralogy and geology of titaniferous magnetite deposits, the reader is referred to reports by gross 1967, klemic, marsh. Vanadium and sulphide bearing titaniferous magnetite bodies in. Western australia to become vanadium producer in addition, palabora mining produces titaniferous magnetite as a byproduct of its copper mining operations. Historically the site has been associated with the northern margin duluth complex mining district which is now part of the superior national forest. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Titaniferous magnetite beds on the blackfeet by eugene. Iron mountain titaniferous magnetite deposits, fremont county. Mineralogy, geochemistry and petrogenesis of the vtibearing and chromiferous magnetite deposits hosted by neoarchaean channagiri. Mineral chemistry of pangidi basalt flows from andhra pradesh.
Jun 06, 2006 the vanadiumbearing titaniferous magnetite ore in the panzhihua area has an average composition of. In the east indian shield hereafter called as eis, the titaniferous magnetite deposits are mainly located in kumhardubi, betjharan areas of mayurbhanj district, nuasahi of kendujhar district of odisha, dublabera area of the west singhbhum district, jharkhand, saltora. Vanadium can be recovered from titaniferous magnetite ore by either of two. Titanomagnetite is a primary source of vanadium about 88% of the worlds vanadium is extracted from titanomagnetite fischer, 1975. Exploratory drilling has revealed a platinum group element pgeenriched. The higher an content indicates that the parent magma is tholeiitic composition. Joseph t singewald gives theresults of an investigation to determine the practicability of separating magnetite and ilmenite in titaniferous magnetites by magnetic concentration. Typical titaniferous magnetite ore grades from the bic are 56% fe, 14% ti. These oxygen fugacities are estimated using temperatures calculated from the titaniferous magnetiteilmenite thermometer of. Indian bureau of mines, indian minerals year book 2011. Considerable ilmenite decomposition and fecl3evolution already occur at 1273 k, leaving a residue consisting of tio2, fe2o3tio2 pseudobrookite, and.
The chlorination of a titaniferous magnetite with low content in ti and fe has been studied between 1273 and 2273 k. On ill as both twin and composition plane, the spinel law, as contact twins, flattened, lamellarphysical properties. Jewish studies law library and information science, book studies. Vanadiumbearing minerals occur in concentrations of between 0. Jul 10, 2016 the depositions of titaniferous magnetite ore are scattered all over the world in countries like australia, china, russia, south africa and new zealand.
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