Wir verwenden Cookies und Analyse-Tools, um die Nutzerfreundlichkeit der Internet-Seite zu verbessern und für Marketingzwecke. Wenn Sie fortfahren, diese Seite zu verwenden, nehmen wir an, dass Sie damit einverstanden sind. Zur Datenschutzerklärung.
Quartz varieties of the SQC group crystal deposits
Details
The gitological study of the quartz crystalliferous deposits of the SQC group, under the Itremo domain, Madagascar, was carried out under a cartographic, petrographic and structural approach. The study shows that these deposits are related to the second phase of deformation (D2) involving both folding and fracturing during the Pan-African orogeny. Quartz crystals are contained in tension cracks in the form of quartz pegmatites, veins and veins that are concordant or discordant to the foliation of the metasediments. The formation process of the mineralized facies is derived from the circulation of hydrothermal fluids, of low temperature, and sometimes with a probable meteoric component. The automorphic and transparent quartz crystals form crystalline sprays within multi-centimetric to metric geodic cavities. They show a more or less pronounced Dauphiné habitus and some rare plagiarism. The different varieties of crystals are piezoelectric quartz, hyaline quartz, hematoid quartz, ghost quartz, hair quartz and amethyst.
Autorentext
Solofomampiely Alfred Andriamamonjy, Geologe, Senior Lecturer und Lecturer-Researcher, Erd- und Umweltwissenschaften, Fakultät für Naturwissenschaften, Universität Antananarivo, Madagaskar.
Weitere Informationen
- Allgemeine Informationen
- Sprache Englisch
- Herausgeber Our Knowledge Publishing
- Gewicht 137g
- Untertitel Districts of Manandriana and Ambatofinanadrahana, Madagascar
- Autor Solofomampiely Alfred Andriamamonjy , Dieudonné Razafimahatratra , Daniel Rakotoarisoa
- Titel Quartz varieties of the SQC group crystal deposits
- Veröffentlichung 18.11.2021
- ISBN 6204261282
- Format Kartonierter Einband
- EAN 9786204261287
- Jahr 2021
- Größe H220mm x B150mm x T5mm
- Anzahl Seiten 80
- GTIN 09786204261287