 Levy' repeatedly obtained hematite from artificial magmas, and similar observations have been made by others. In ordinary furnace slags, however, according to JHL Vogt, » hematite rarely if ever occurs. Ferric oxide can crystallize out as hematite only...  United States Congressional Serial Set - Sayfa 2791908Tam görünüm - Bu kitap hakkında
 | 1908 - 924 sayfa
...observations have l>een made by others. In ordinary furnace slags, however, according to J. II. L. Vogt, " hematite rarely if ever occurs. Ferric oxide can crystallize...schists; but magnetite is by far the more common as a pyrogenie mineral. In igneous rocks generally ferrous oxide exceeds the ferric in amount, the average... | |
 | Geological Survey (U.S.) - 1908 - 734 sayfa
...observations have been made by others. In ordinary furnace slags, however, according to JHL Vogt, » hematite rarely if ever occurs. Ferric oxide can crystallize...schists; but magnetite is by far the more common as a pyrogenie mineral. In igneous rocks generally ferrous oxide exceeds the ferric in amount, the average... | |
 | Charles Henry Richardson - 1913 - 340 sayfa
...be the resulting product, According to FW Clarke, hematite can crystallize out from a magma when the ferrous compounds are either absent or present in quite subordinate amounts, for the ferrous oxide unites with it to form magnetite. Hematite is therefore more common in the acidic... | |
 | Geological Survey (U.S.) - 1916 - 834 sayfa
...observations have been made by others. In ordinary furnace slags, however, according to J. II. L. Vogt,9 hematite rarely if ever occurs. Ferric oxide can crystallize...more siliceous and feldspathic granites, syenites, trachytss, rhyolites, andesites, and phonolites. It is also found in the crystalline schists; but magnetite... | |
 | 1916 - 1086 sayfa
...are due to a primary mineralization by gaseous solutions deficient in ferrous oxide. FWClarke says:23 "Ferric oxide can crystallize out as hematite only...ferrous oxide unites with it to form magnetite." The crystallization of specularite as a later phase, from a gaseous solution containing insufficient ferrous... | |
 | Frank Wigglesworth Clarke - 1920 - 840 sayfa
...observations have been made by others. In ordinary furnace slags, however, according to JHL Vogt,10 hematite rarely if ever occurs. Ferric oxide can crystallize...amounts, for ferrous oxide unites with it to form magi See R. Bnrans, Chemlsche Mineralogie, 1S96, p. 231. 1 Compt. Bend., vol. 39, 185), p. 135. ' Idem,... | |
 | 1920 - 844 sayfa
...observations have been made by others. In ordinary furnace slags, however, according to JHL Vogt,10 hematite rarely if ever occurs. Ferric oxide can crystallize...amounts, for ferrous oxide unites with it to form magi Sec R. Brauns, Chemische Mincralogie, ISDfi, p. 231. * Compt. Rend., vol. 39, 1851, p. 135. 5... | |
 | North Carolina. Division of Mineral Resources, William Shirley Bayley - 1923 - 262 sayfa
...schistose country rock. Clarke266 calls attention to the fact that ferric oxide can crystallize from magmas as hematite only when ferrous compounds are either...absent or present in quite subordinate amounts, for 2"Unpublished report to the Tennessee Geologic Survey. 2«6Keith, Arthur, US Geol. Survey Geol. Atlas,... | |
 | Tennessee. Division of Geology - 1923 - 516 sayfa
...schistose country rock. Clarke268 calls attention to the fact that ferric oxide can crystallize from magmas as hematite only when ferrous compounds are either...absent or present in quite subordinate amounts, for i••Unpublished report to the Tennessee Geologic Survey. i"Keith. Arthur. US Geol. Survey Geol.... | |
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