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Micrographic (granophyric) textures in quartzitic pebbles of the granitised conglomerate of Buri-Rashicha, Ula-Ulo, Adola District, S. Ethiopia

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Abstract

Micrographic quartz/K-feldspar intergrowths occur in quartzitic pebbles of the metamorphosed conglomerate from Buri-Rashicha/Ula-Ulo, S. Ethiopia. All transition phases and stages are observed from the interlocking quartzitic texture to the granophyric (the K-feldspar being metasomatically introduced).

Metasomatic, replacement and infiltration processes are considered to have been responsible for the metamorphism and “granitisation” of the conglomerate and for the micrographic textures.

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References

  • Augustithis, S. S.: Researches of blastic processes in granitic rocks and later graphic quartz in pegmatites (pegmatoids) from Ethiopia. Nova Acta Leopoldina, N.F. 25, Nr. 156 (1962a).

  • —: Non eutectic, graphic, micrographic and graphic like “myrmekitic” structures and textures. Beitr. Mineral, u. Petrog. 8, 491–498 (1962b).

    Google Scholar 

  • - Quartz/feldspar micrographic (granophyric) intergrowths in volcanics and their comparison with graphic and granophyric structures and textures in granites and pegmatites. Special Bull. Petrogenesis, Athens, 3–14 (1964a).

  • —: Geochemical and ore-microscopic studies of hydrothermal and pegmatitic uranium parageneses. Nova Acta Leopoldina, N.F. 28, Nr. 170, 59–60 (1964b).

    Google Scholar 

  • Breithaupt, A.: Über regelmäßige Verwachsungen von Kristallen zweier und dreier Mineralspezies. Neues Jahrb. Mineral., Geol. Paläontol. 89 (1839).

  • Drescher-Kaden, F. K.: Die Feldspat-Quarz-Reaktionsgefüge der Granite und Gneise und ihre genetische Bedeutung. Berlin-Göttingen-Heidelberg: Springer 1948.

    Google Scholar 

  • - Versuche zur Hydrothermal-Synthese (Die Bedeutung der Intergranulare beim Kristallwachstum). Kurzfassung des Vortrages, gehalten auf dem 8. Treffen des Fachverbandes, Mineralogie der Geologischen Gesellschaft in der DDR, Erfurt 1962. Ber. Geol. Ges. Sonderheft 1.

  • -, u. J. Dittmann: Transportvorgänge in Intergranularen. Naturwissenschaften, H. 7, 217 (1961).

  • Fersman, A. E.: Die Schriftstruktur der Pegmatite und die Ursachen ihrer Entstehung. Isw. Akad. Wiss. 12, 1211 (1915).

    Google Scholar 

  • Högbom, A. G.: Über einige Mineralverwachsungen. Bull. Geol. Inst. Univ. Upsala 3, 314 (1899).

    Google Scholar 

  • Hoenes, D.: Petrogenese im Grundgebirge des Südschwarzwaldes. Heidelberger Beitr. Mineral, u. Petrog. 1, H. 2/3, 121–202 (1948).

    Google Scholar 

  • Hutton, J.: Theory of the earth. Royal Society of Edinburgh, 1788.

  • Melidonis, N.: The geology of the island of Anaphe (in Greek), p. 201–221. Athens 1964.

  • Rath, G. Vom: Geognostisch-mineralogische Fragmente aus Italien, Teil 3. Z. deut. geol. Ges. 22, 659 (1870).

    Google Scholar 

  • Rose, G.: Reise nach dem Ural 1, 445 (1837).

    Google Scholar 

  • Sabersky, P.: Mineralogisch-petrographische Untersuchung argentinischer Pegmatite usw. Neues Jahrb. Mineral., Geol. Paläontol. 7, 394 (1891).

    Google Scholar 

  • Schädel, J.: Untersuchungen zur Bildungsfolge der Mineralien in den Drusen der Granite von Striegau (Schlesien). Nova Acta Leopoldina, N.F. 24, Nr. 153 (1961).

  • Schaller, W. T.: Origin of graphic granite. Am. Mineralogist 11, 59 (1926).

    Google Scholar 

  • Schloemer, H.: Hydrothermal-synthetische gemeinsame Kristallisation von Orthoklas und Quarz. Radex-Rundschau, H. 3, 133–173 (1962).

  • Vallérant, F.: Über die Gruppierungen von Kristallen verschiedener Art. Compt. rend. 135 (1902).

  • Vogt, J. H. L.: Die Genesis der Granite, physikochemisch gedeutet. Z. Geol. Ges. 83 (1931).

  • Wahlstkom, E. E.: Graphic granite. Am. Mineralogist 24, (1939).

  • Woitschach, G.: Die Granitgebirge von Königshain in der Oberlausitz. Abhandl. naturforsch. Ges. Görlitz 17 (1881).

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  1. Ministry of Mines, Addis-Abeba

    S. S. Augustithis

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  1. S. S. Augustithis
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Augustithis, S.S. Micrographic (granophyric) textures in quartzitic pebbles of the granitised conglomerate of Buri-Rashicha, Ula-Ulo, Adola District, S. Ethiopia. Contr. Mineral. and Petrol. 13, 75–82 (1966). https://doi.org/10.1007/BF00518128

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  • DOI: https://doi.org/10.1007/BF00518128

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