Martite

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martite [′mär‚tīt]

(mineralogy)

Hematite occurring in iron-black octahedral crystals pseudomorphous after magnetite.

Martite

a mineral, the product yielded upon conversion of magnetite, Fe₃O₄ into hematite, Fe₂O₃. The crystals and crystalline grains of magnetite, upon conversion into martite, are usually replaced, without alteration of their original form, by finely aggregated hematite and exhibit the physical properties characteristic of the latter. Martite forms during the oxidation of magnetite in the weathering zone of the earth’s crust as well as deep within the earth under conditions characterized by increased oxidation potential of hydrothermal solutions surrounding the previously formed magnetite. Martite ores are high-grade iron ores.

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No references found			Minor magnetite is present and some has been partly converted to hematite as martite. Geology and geophyscis. (Senior Division 2002) by Wronkiewicz, David / Transactions of the Missouri Academy of Science			Martini, Simone Martinique Martinique Communist Party Martinmas Martino, Donald Martinovics Conspiracy of 1794 Martinovics, Ignac Martinovics, Ignác Martins Ferry Martins, Peter Martinsburg Martinsfest Martinson, Harry Martinson, Harry Edmund Martinson, Helga Maria (Moa) Martinson, Helga Maria Moa Martinson, Sergei Martinson, Sergei Aleksandrovich Martinsville Martinu Martinu, Bohuslav Martinus Nijhoff Martiny, Philip Martiros Sarian Martiros Sergeevich Sarian Martite Martius and Quintus Marton Keleti Márton Keleti Marton Lendvay Márton Lendvay martonite Martonne, Emmanuel de Martos, Ivan Martos, Ivan Petrovich Martov, L. Martovich, Les Martsialnye Vody Martsin, Tatiana Martsin, Tatiana Filippovna Martsinovskii, Evgenii Martsinovskii, Evgenii Ivanovich Martsun, Mariia Martsun, Mariia Antonovna Martti Johannes Larni Martuni Marty, Martin Martyn Ivanovich Latsis Martyn Latsis Martyn Liadov Martyn Matveevich Terekhovskii			Martinsville High School Martinsville Uptown Revitalization Association Martinsville, VA Martinsville, Virginia MartinU MartinU Martinu, Bohuslav Martinus Martinus Martinus Martinus (saint) Martinus Luther Martinus Luther Martinus Lutherus Martinus Lutherus Martinus Nijhoff Martinus Pretorius Martinus Scriblerus Martinus Scriblerus Club Martinus Wessel Pretorius Martiny, Philip Martiros Sarian Martiros Saryan Martiros Sergeevich Sarian Martis dies Martis dies Martis Valley Community Plan Martis Valley Vacation Rentals Martite Martius Martius and Quintus Martlemas Martlesham Heath Aviation Society martlet Martlet Kayak Club martlets Martlett Marton Keleti Márton Keleti Marton Lendvay Márton Lendvay martonite Martonne, Emmanuel de Martorell's syndrome Martos, Ivan Martos, Ivan Petrovich Martov, L. Martovich, Les MARTP MARTS MARTS MARTS MARTS Martsialnye Vody Martsin, Tatiana Martsin, Tatiana Filippovna

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Martite