 ... granitic rocks. Traces of tin have been detected in feldspar. Stannite, or tin pyrites, is a sulphide of tin, copper, and iron, and a few other rare minerals contain this element. Titanium. — This element is almost invariably present in igneous...  Journal of the Franklin Institute - Página 468por Franklin Institute (Philadelphia, Pa.) - 1917Vista completa - Acerca de este libro
 | Nathan Clifford Grover, Roy Hale Bolster - 1906 - 670 páginas
...titanium is a commoner element in igneous rocks than either of the other members of the titanium group. Out of 800 igneous rocks analyzed in the laboratory...the United States Geological Survey, 784 contained titanium.0 Concerning its occurrence in igneous rocks Washington says :<* "It (titanium) is much more... | |
 | Geological Survey (U.S.) - 1908 - 734 páginas
...element is almost invariably present in igneous rocks and in the sedimentary material derived from them. Out of 800 igneous rocks analyzed in the laboratory...States Geological Survey, 784 contained titanium." Its commonest occurrences are as titanite, ilmenite, rutile, and perofskite. The element is often concentrated... | |
 | 1908 - 876 páginas
...element is almost invariably present in igneous rocks and in the sedimentary material derived from them. Out of 800 igneous rocks analyzed in the laboratory...States Geological Survey, 784 contained titanium." Its commonest occurrences are as titanite, ilmenite, rutile, and perofskite. The element is often concentrated... | |
 | Frank Wigglesworth Clarke - 1908 - 732 páginas
...element is almost invariably present in igneous rocks and in the sedimentary material derived from them. Out of 800 igneous rocks analyzed in the laboratory...States Geological Survey, 784 contained titanium." Its commonest occurrences are as titanite, ilmenite, rutile, and perofskite. The element is often concentrated... | |
 | 1908 - 924 páginas
...element is almost invariably present in igneous rocks and in the sedimentary material derived from them. Out of 800 igneous rocks analyzed in the laboratory...the United States Geological Survey, 784 contained titanium.0 Its commonest occurrences are as titanito, ilmenite, rutile, and perofskite. The element... | |
 | Frank Wigglesworth Clarke - 1911 - 794 páginas
...element is almost invariably present in igneous rocks and in the sedimentary material derived from them. Out of 800 igneous rocks analyzed in the laboratory...the United States Geological Survey, 784 contained titanium.1 Its commonest occur' FP Dunnington (Am. Jour. Sol., 3d scr., vol. 42, 1891, p. 491) has... | |
 | Geological Survey (U.S.) - 1911 - 836 páginas
...element is almost invariably present in igneous rocks and in the sedimentary material derived from them. Out of 800 igneous rocks analyzed in the laboratory...the United States Geological Survey, 784 contained titanium.1 Its commonest occuri FP Dunnington (Am. Jour. Sci., 3d ser., vol. 42, 1891, p. 491) has... | |
 | Thomas Leonard Watson, Stephen Taber - 1913 - 420 páginas
...titanium is a commoner element in igneous rocks than either of the other members of the titanium group. Out of 800 igneous rocks analyzed in the laboratory...States Geological Survey, 784 contained titanium." Concerning its occurrence in igneous rocks Washington says :d "It (titanium) is much more abundant... | |
 | Virginia. Division of Mineral Resources - 1913 - 418 páginas
...titanium is a commoner element in igneous rocks than either of the other members of the titanium group. Out of 800 igneous rocks analyzed in the laboratory...the United States Geological Survey, 784 contained titanium.0 Concerning its occurrence in igneous rocks Washington says :d "It (titanium) is much more... | |
 | Franklin Institute (Philadelphia, Pa.) - 1917 - 978 páginas
...nitric and hydrofluoric acids. 3. THE GEOLOGY AND MINERALOGY OF TITANIUM. Occurrence and Mineraloyical Forms of Titanium. — Titanium is a constituent which...1912, vol. iii (ser 4), pp. 45-48. "Phil. Trans., 1823, vol. 17. "Clarke, FW, "The Data of Geochemistry." Bull. 616, US Geological Survey, p. 21. VOL.... | |
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