 | | Journal (article/letter/editorial) | | in diameter, a r e filled with small plates of tridymite interspersed and intergrown with hornblende, golden-yellow...lamine of iron-glance. A similar occurrence of tridymite has been discovered in the Siebengebirge, in a...lump of scoriaceous porous trachyte from the Stenzelberg. This lump is so porous t h a t the cavities...diameter) are thickly lined and partly filled with tridymite, associated with small octohedrons of magnetic...the silica from which this large quantity of tridymite has been formed was not derived from these walls |  | | Book (volume) | | illore e LOy] - 108 LOO 2) CLIO aig 5 + ITO North and West Britain . . I19| Sand-dunes . : 5 Mid Britain...In the Hebrides, &. Along the Grampians In the North-Western Scenery of gneiss and Scenery of quartz...of regular structure in the mines of England, Germany, Sweden, &c, 4. The remains of plants and animals...Werner contemplated the rocks and metallic veins of Germany, was the relative period of ~ Figs x. their...that the order of succession among these rocks in Germany would be found to prevail in all parts of the world |  | | Book | | forms at a very late stage, often with quartz or tridymite, whereas the magnesia-rich mica phlogopite usually...Poikilitic texture in hornblende peridotite, Odenwald, Germany. Diam. 3 mm. A single crystal of hornblende encloses...Micrographic texture in granopliyre, Rosskopf, Vosges, Germany. Diam. 2 mm. Cuneiform intergrowtli of quartz and...but most of them are intergrowths of cjuartz or tridymite with orthociase, sanidine, or sodic plagioclase...sanidine and leucite, and metastable phases such as tridymite and glass, are seldom seen in plutonic rocks, |  | | Book (edition) | | center of will fall the stereographic projecAll north and south tion. meridians of the spherical projection... To locate the pole of a face lying on a known north and south great circle, (1) angular distance from...projection of the arc of a great circle which is not a north (2) and south meridian or the equator. The projections... is locate the position of the pole of not a north and south meridian, its 36 CRYSTALLOGRAPHY...MATHEMATICAL RELATIONS OF CRYSTALS 41 tangent to the north pole of the sphere of the spherical projection. |  | | Journal (article/letter/editorial) | | are: a) Silica and alumina uncombined,quartz (tridymite) and corundum,togetherwithzircon,which,though...rock f. Hornblende from andesite (umptekose), Stenzelberg,Siebeng TABLE 1 from e) Hornblende fromhornblende-gabbro...(1899), p. 297. zde from andesite (umptekose), Stenzelberg, Siebengebirge, ENBUsch, El. Gest., pp. 290,...Norway; rock analysis from laurdalite (laurdalose), north of Iive, Laugenthal. BRbGGER, Erufitivgest. Kristiania |  | | Book (edition) | | manufactured of great perfection at Siegen, in Germany. Pasteboard models, likewise useful aids to the...nearly at right angles to each other (O A 1 ; * is tridymite (see p. 288), where the twinning-plane is either...manite ; OF THE CARBON-SILICON GROUP. Quartz tridymite ; ; ; as- opal. TERNARY OXYGEN COMPOUNDS...common in many gold regions, as those of Brazil and North Carolina, and sometimes specular schists, or slaty...Transylvania it occurs also in the sands of the Rhine, the Reuss, the Aar, the Rhone, and the Danube on |  | | Book (edition) | | manufactured of great per; fection at Siegen, in Germany. Pasteboard models, likewise useful aids to the...nearly at right angles to each other (O A 1 * is tridymite (see p. 266), where the twinning-plane is either...manite ; OF THE CARBON-SILICON GROUP. Quartz tridymite ; ; ; as- opal. TERNARY OXYGEN COMPOUNDS...common in many gold regions, as those of Brazil and North Carolina, and sometimes specular schists, or slaty...Transylvania ; it occurs also in the sands of the Rhine, the Reuss, the Aar, the Rhone, and the Danube on |  | | Journal (article/letter/editorial) | | me~orphism of some massive sulfide deposits in Virginia, North Carolina and Tennessee (KINEEL, THOMAS, MARVIN and...from Skye, 26: 1870 sulphide bodies in Virginia, North Carolina and Tennessee, 29 : 717 sulphides, Sudbury...1122 Wyoming, Cole creek field, 27: 1122 Wyoming, North Tisdale field, 27: 1122 Aliphatic hydrocarbons,...fresh-water enviro~ents, 28: 17571786 Andesine Germany, Dransberg, sulphur in, 21: 44 sulphur in, 2x:...27: 869 Germany, Sababurg, sulphur in, 21: 49 Germany, Stenselberg, sulphur in, 21: 49 Germany, Wolkenburg |  | | Book (edition) | | manufactured of great perfection at Siegen, in Germany. Pasteboard models, likev/ise useful aids to the...; OF THE Carbon-silicon Group. — Quartz ; tridymite ; ; aa- opal. TEKNART OXYGEN COMPOUNDS. ...common in many gold regions, as those of Brazil and North Carolina, and sometimes specular schists, or slaty...rocks exist. it occurs also in the sands of the Rhine, the Reuss, the Aar, the Rhone, and in Transylvania...streams of Cornwall near Dolgelly and other parts of North Wales in Scotland in the county of Wicklow, Ireland |  | | Book (edition) | | translations of Arabic and important early 103-1260) in Germany, Kludents of the subject were Albert us Magnus...independently, by Hampson in Eng* land and by Linde in Germany, by the use of a new principle, vis. the JouU»...direct transformation of to change into tridymite quartz into tridymite, without a flux, is doubtful. Silica...some months at 330*. others to tlie left, — Tridymite (density 2*26) occurs more rarely than quartz...cavities in the trachytic rocks of hicxico and Stenzelberg Tridymite. in so that one type of crysUl and in |
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