 | | Journal (article/letter/editorial) | | Similar rocks occur in the granulite region of Saxony, at Tvedstrand in Norway, in the Central Plateau...have just referred, in the kersantite dyke of Michaelstein in the Hartz'", in andesitic lavas of the EifeI...j, H. TEALL ON The kersantite - dyke, near Michaelstein'", is intrusive in day - slate with subordinate...that found in the foreign substances in the Michaelstein dyke. The aggregates, which are formed of somewhat...This, like the cordierite in the kersantite of Michaelstein, undoubtedly owes its origin to the chemical |  | | Journal (article/letter/editorial) | | occurrence of such metamorphic minerals as corundum, spinel, sillimanite, cordierite, and anorthite make these...g basic plagioclase, sillimanite, sapphire, and spinel (S. 16612), f r o m t h e basic portion of the...appear to be represented in the kersantite of Michaelstein, 1 which forms a dyke of obviously mixed igneous...The anorthite-corundum-spinel assemblage. (3) The cordierite-sillimanite-spinel assemblage. (1) The b...several inches thick, and rich in corundum and spinel, normally separates the buchite from the enclosing |  | | Report (volume) | | corundum, the stones are readily distinguished from spinel, garnet, and other gem minerals, which resemble...corundum in the sample, for many other minerals, as spinel, amphibole, pyroxene, chlorite, garnet, etc., that...this emery there is sometimes a larger per cent of spinel than of corundum, but in the chemical analysis...be very much below a good emery, for the mineral spinel contains nearly 72 per cent of alumina. The abrasive...of a true emery, as the cutting quality of the spinel is much lower than that of the corundum. DETERMINATION |  | | Report (volume) | | inches in width. Green chlorite, corundum, and spinel, 6 to 8 feet wide. Chlorite, same as 5. Enstatite...passes into 6 a mass of chlorite, corundum, and spinel. Although the section just described is a special...been observed on corundum from other localities. Spinel lias been found at a number of the corundum veins...green chlorite; G, green chlorite, corundum, and spinel; '?, green chlorite; 8, enstatite; 9, talcose rock;...intergrown with a greenish-black spinel. The masses of corundum and spinel are partially surrounded by a |  | | Report (volume) | | 275 Hematite . 276 Ilmenite or menaccanite. 276 Spinel . 277 Picotite .’... 278 Gahnite . 278 Magnetite...Mincey mine, Macon County, N. C.•. 260 XXIX. A, Spinel in radiating chlorite nodule. Corundum Hill (shaft)...blue and pink cor¬ undum occurs in a vein with spinel, feldspar, etc., which is developed approximately...amphibole, intimately intermingled with pleonaste. The spinel minerals present a series ranging in color from...and isotropic, and are considered to be a green spinel, probably pleonaste. In several sections this |  | | Report (issue) | | Central zone, including Norway, Sweden, Finland, Germany, STATEMENT OF BATING. 65 Austria, Hungary,...arranged in a general order from north to south (in Germany from west to east). In rocks from the same locality...section texiare belong nephelite-basalts of Texas and Saxony, with melilite-basalts of the Hegau and Westphalia...1.4 hy 1.3 mt 0.9 Alvensleben, n. Magdeburg, Saxony. Hampe. F. Klockmann, Jb. Pr. G. L-A., XI, p...an 2.8 0 0.4 hv 4.0 Klinzerberg, n. Magdeburg, Saxony. Bodl;iuder. F. Klockmann, Jb. pr. G. L-A., XI |  | | Book | | 11 Geology 288 355 Bibliography-France 356 Germany 356 Bibliography-German~ 356 Greece 356 Bibliography-Greece...New York, for info & phocos. • Martin Steinbach, Germany, for specimens and lots of crazy ci.mes. • Robert...crystal (586 et), surrounded by four Burmese red spinel octahedra (1.12 et total) and four alluvial diamond...best are chose called amethystizontes [ALnandire: spinel?] because on the crystal points cheir fire resembles...Although Libya is mentioned, we know of no ruby or spinel coming &om this area. Once again this points up |  | | Book (volume) | | On the Staff of the Carl Zeiss Factory, Jena, Germany. P. A. K. Prince Peter Alexeivitch Kropotkin...only other artists who have risen to eminence. Germany.—A characteristically florid style is here cultivated...formerly called aft-er St Boniface, the apostle of Germany, was once the richest in Friesland, and belonged...in Crete; of Pope Leo XIII., in 1885, between Germany and Spain in the matter of the Caroline Islands...distinct appellation. It first took its rise in Germany, and more tardily received recognition in Great |
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