Notes from the New Zealand Geological Survey—5: Experimental crystallisation of a lamprophyre glass

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Abstract
During a petrological study of the lamprophyre dike swarm in the lower Buller Valley (Nathan, 1966) several experiments were made to test the effects of melting and recrystallising a typical specimen. Unfortunately, time has not allowed an exhaustive experimental programme to be carried out or the problems raised by the present work to be further investigated, but as the writer is unable to continue the experiments at this time the results are presented for the information of other petrologists.