Pa18 Trachyt

Item

Title
Pa18 Trachyt
Description
A gray igneous rock with a porphyritic texture. It includes a few phenocrysts of feldspars and dots of black material; probably micas.
Contributor
Dave Biggers
Identifier
Pa18
Mediator
Tamara Carley (carleyt@lafayette.edu)
Rights Holder
Lafayette College Department of Geology and Environmental Geosciences

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