fengite

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Fengite is a translucent sheet of marble or alabaster used during the Early Middle Ages for windows instead of glass.{{cite journal|author=Downloads |title=Dictionary Geotechnical Engineering, "fengite". Springer 2014 |publisher=Link.springer.com |date=2014-08-24 |doi=10.1007/978-3-642-41714-6_60522 }}{{Cite web |url=http://machaut.uchicago.edu/?resource=Webster's&word=Fengite&use1913=on |title=Websters 1913 dictionary |access-date=2010-08-15 |archive-url=https://web.archive.org/web/20100723021830/http://machaut.uchicago.edu/?resource=Webster's |archive-date=2010-07-23 |url-status=dead }}