Definitions
from The Century Dictionary.
- noun Iron sesquioxid in isometric crystals, probably pseudomorph after magnetite. It occurs occasionally on a large scale, as in the Lake Superior iron region and the Cerro de Mercado in Mexico.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) Iron sesquioxide in isometric form, probably a pseudomorph after magnetite.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology , (mineralogy) A
variety ofhematite that ispseudomorphic aftermagnetite crystals .
Etymologies
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Examples
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Various analyses of this "martite" ore show from forty-four to sixty-eight per cent. of iron, and very low in both sulphur and phosphorus.
North Carolina and its Resources. North Carolina. Board of Agriculture. 1896
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Messrs. Witherbee, Sherman & Company exhibited a series of ores and concentrates from Mineville, the Arnold Mining Company, magnetites and martite from
New York at the Louisiana Purchase Exposition, St. Louis 1904 Report of the New York State Commission DeLancey M. Ellis
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The ore is mineralogically martite schist, and the enclosing rocks are grayish, greenish and pinkish siliceous schists, of probable eruptive origin.
North Carolina and its Resources. North Carolina. Board of Agriculture. 1896
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The magnetite is variably altered to martite and shows a grainsize in the range 100-500um that forms 30-60% by volume of the rock.
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The magnetite is variably altered to martite and shows a grainsize in the range 100-500um that forms 30-60% by volume of the rock.
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The magnetite is variably altered to martite and shows a grainsize in the range 100-500um that forms 30-60% by volume of the rock.
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The magnetite is variably altered to martite and shows a grainsize in the range 100-500um that forms 30-60% by volume of the rock.
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