Jabal Archenu

Alkalic igneous rare-earth element, in Libya

Deposit type: Alkalic igneous

REE minerals: eudidymite

Ore minerals: titanite, lorenzenite, magnetite, ilmenite

Gangue minerals: nepheline, analcime, sodalite, zeolite, pyroxene, amphibole, biotite, catapleiite, lavenite, cancrinite

Host rock types: syenite, phonolite, trachyte

Average grade:

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