Mineralienatlas - Fossilienatlas
foidite (Foidit) |
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| Rocks ⇒ igneous rocks and sediments ⇒ crystalline igneous rocks ⇒ normal crystalline rocks ⇒ fine-grained crystalline rocks ⇒ foiditic-rock | |
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foidite |
British Geological Survey-Streckeisen, 1978 & 1979 International Union of Geological Sciences-Streckeisen, 1978 & 1979 |
Detailed description
Allgemeiner Begriff für vulkanische Gesteine, welche im QAPF-feld 15 definiert sind; resp. Gesteine welche mehr als 60% Foide als helle Bestanteile aufweisen. Chemisch definiert im TAS - feld F. Foidite werden in Tephritischer Foidit, Phonolitischer Foidit unterteilt. |
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