✦ LIBER ✦

The origin of fassaitic augite in the alkali basalt suite of the Hocheifel area, Western Germany

✍ Scribed by H. G. Huckenholz

Publisher: Springer
Year: 1973
Tongue: English
Weight: 723 KB
Volume: 40
Category: Article
ISSN: 0010-7999
DOI: 10.1007/bf00371022

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✦ Synopsis

Fassaitic augite (augite 3) occurs in elinopyroxenite fragments with cumulus textures or as anhedral crystals in alkali basalts and nepheline basanites of the Hocheifel Area. Rimming of augite 3 by phenocrystic augite (augite 2) followed by groundmass augite (augite 4) defines the sequence of the clinopyroxene crystallization. Fassaitic augites from other alkalibasalt series reveal clinopyroxene crystallization trends of increasing ferriTschermak's molecule and concomitant acmite as fractionation proceeds. This trend appears to be much more common than previously assumed.

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