Ph.D.., Docent
Senior Lecturer in Geology
and Mineralogy
Kultahippu © P.Tuisku & P.Tuisku
Kurssit :
Mineralogian peruskurssi Optinen mineralogia Petrografia I Petrografian II Yleinen mineralogia
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Fig. 1. The figure on
the right is from eclogitized melagabbro or peridotite from Vaulo at
the southwestern marginal zone of the Lapland granulite belt. The
original rock was composed of olivine and orthopyroxene as cumulus
phases and plagioclase as intercumulus phase. During the
eclogite-facies metamorphism all of the plagioclase disappeared by
reaction with olivine to form orthopyroxene and pargasite rims and
pargasite-spinel-clinopyroxene symplectites around olivine. For more
information see Tuisku and Makkonen (1999) GFF, 121, 293-300.