Ausgeblendete Felder
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" W,hen i> contains hornblende in place of mica, it is called syenite , hornblende resembles mica in these rocks but the laminae separate much less easily and are brittle. Granite is said to be micaceous, feldspathic, or quartzose, according as the mica,... "
Manual of Mineralogy: Including Observations on Mines, Rocks, Reduction of ... - Seite 351
von James Dwight Dana - 1866 - 454 Seiten
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Manual of Mineralogy ...

J.D. Dana - 1855 - 440 Seiten
...grayish-white, gray, or flesh-red color, the shade varying with the color of the constituent minerals. When it contains hornblende in place of mica, it is called...feldspathic, or quartzose, according as the mica, feJdspar, or quartz, predominates. It is called porphyritic granite, when the feldspar is in large...
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Rudimentary Treatise on Mineralogy

James Dwight Dana - 1859 - 236 Seiten
...greyish-white, grey, or flesh-red colour, the shade varying with the colour of the constituent minerals. When it contains hornblende in place of mica, it is called...brittle. Granite is said to be micaceous, feldspathic, or qvartzose, according as the mica, feldspar, or quartz predominates. It is called porphyritic granite,...
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Gold Regions of Canada: Gold, how and where to Find It: the Explorer's Guide ...

Henry White - 1867 - 120 Seiten
...excess of feldspar, it assumes n redder color, aud when mica prevails it Is generally darker. When it contains hornblende in place of mica it is called...hornblende resembles mica in these rocks, but the lamina; ¡a brittle, ami innre difficult to separate. Granite is said to be micaceous, Jcl<lxp<it.t?,...
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Manual of Mineralogy: Including Observations on Mines, Rock, Reduction of ...

James Dwight Dana - 1876 - 458 Seiten
...grayish-white, gray, or flesh-red color, the shade varying with the color of the constituent minerals. When if contains hornblende in place of mica, it is called...called porphyritic granite, when the feldspar is in )arge crystals, and appears over a worn surface like thickly scattered white blotches, often rectangular...
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The Explorers' and Assayers' Companion: Rocks, Veins, Testing and Assaying ...

Josiah Samuel Phillips - 1879 - 480 Seiten
...separata much less easily, and are brittle. Granite Is said to be micaceout,feld>patJiic, or quarttou, according as the mica, feldspar, or quartz predominates....blotches, often rectangular In shape. Graphic granite has the appearance of small oriental characters over the surface, owing to the angular arrangement of the...
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